Atlantis Highlights in Materials Science and Technology

High-strength steel hot-formed parts are widely used as safety protection parts for automobiles due to their ultra-high strength (1500–2000 MPa). In order to prevent the oxidation and decarburization of traditional high-strength steel sheets during the heating process of hot forming, and at the same...

Due to the low elongation of aluminum alloys at room temperature, which often leads to cracking during forming, hot stamping is commonly used to improve the formability of aluminum alloys. However, in traditional hot stamping processes, the solid solution treatment time is excessively long and cannot...

The article presents the results of studies on the development of methods for obtaining normal heights in Vietnam using the global model EGM2008 and software for processing GNSS measurements. Errors between normal heights calculated from the global geoid model EGM2008 and heights determined from GNSS...

In this study, the ZnFe coated boron steel specimens were treated by rapid heating at different heating rates from 20 ℃/s to 100 ℃/s. The coating morphologies and phase compositions were characterized to investigate the influence of heating rate on phase transformation of ZnFe coating. The results indicated...

To assess the current state of the coastal zone of the Sea of Azov, we made an analysis of socio-economic and environmental consequences of hazardous coastal processes, a comprehensive environmental and economic assessment, which includes the study of the main natural, economic, social and environmental...

Nowadays, the increasing requirements for energy conservation and emission reduction have fostered the application of the hot-stamped aluminum alloy for lightweight. However, it is difficult to achieve industrialized production because of the long-term process as well as high production costs. In this...

In this paper, the contact heating method was adopted to heat the aluminum alloy instead of furnace heating. During the process, the aluminum alloy sheet was placed in the preheated flat die under a certain press force for several seconds until the sheet reach the preset temperature. The heating curves...

The article touches upon the issue of automatic recognition and subsequent processing of data on natural and industrial objects of the world. The obtained data is a result of laser scanning. For data analysis in 2018 a research group, consisting of specialists from Kuban State Technological University,...

The rapid growth of automobile ownership has put tremendous pressure on the environment and energy, so it is particularly important to promote the lightweight of automobiles. Aluminum alloy is an ideal lightweight material with excellent comprehensive performance, which can improve the performance of...

In this study, a multi-step rapid heating procedure composed of two holding stages is developed to achieve fast alloying as well as less zinc loss of the zinc coating. The oxidation behavior during the first holding stage and the microstructure evolution during the final holding stage of the zinc coating...

Lake Valencia is the second most important natural freshwater basin in Venezuela. The expansion of industrial and agricultural activities and population growth over the past four decades has accelerated the process of eutrophication of the lake waters at such a rapid rate that it cannot be compensated...

This paper investigates the influence of spot-welding process on surface accuracy of cold and hot stamping assembly part. In order to control surface accuracy after spot welding, simulative work was carried out. In simulative work, welding sequence under given clamping position was considered. The results...

Automobile lightening is a direct and effective measure to realize energy saving and emission reduction. Using aluminum alloy and carbon fiber reinforced polymers (CFRP) composite materials to manufacture automobile parts can greatly reduce weight while enhance the overall strength and balance the overall...

The article analyzes the distortions introduced by the cartographic projection of Gauss. The authors justify that modern high precision measuring instruments should be accompanied by qualitative methods of measurement results processing in the mountainous areas. It is shown that the operation of transfer...

The article analyzes information on oil and gas deposits obtained by seismic exploration, geological and geophysical data compilation and reinterpretation for the western part of the Terek-Caspian trough. The tabulated data on morphological parameters (linear dimensions, amplitudes) of local structures...

This article explores the influential factors leading to the failure of hot stamping molds and highlights the significance of mold maintenance. With the increasing production of electric vehicles and the adoption of lightweighting technologies, high-strength steel hot stamping forming has emerged as...

The article studies current trends of global digitalization of all spheres of society, including economic activities. The author analyzes and substantiates the significant contribution of space technologies and knowledge to the development of the world economy. Information obtained from the space helps...

Automobile lightening is a direct and effective measure to realize energy saving and emission reduction. TRB of boron steel has greater application value in automotive lightweight. In this work, the TRB scheme of a down plate of rear stringer with thickness of 1.8 mm, 2.0 mm, 1.6 mm and 1.4 mm was designed,...

The Republic of Sakha (Yakutia), compared with the other regions of our state, is currently considered to be poorly studied in terms of introducing innovative solutions for the spatial organization of the road network. Today's financial constraints and the geographical location of the Republic of Sakha...

With the promotion and application of high strength steel and hot stamping forming technology in automobile engineering, researchers gradually realize that in addition to improving the strength of automobile structural parts, the problem of matching the mechanical properties of parts and body safety...

The Omega parameter offers a novel approach to quantifying line pipe steels’ fracture resistance through a post-processing 3D scanning and slicing technique. Unlike traditional parameters such as the Crack Tip Opening Angle (CTOA), Omega reduces testing costs and subjectivity and remains unaffected by...

This article discusses the concepts of environmental management, analyzing the processes of extraction, pricing and the use of limited natural resources, as well as the role that limited natural resources play in the economic development of society. The formation and development of systems in each region...

Due to the advantages of high efficiency, low energy consumption and wide applicability, die punching has been widely used in the shearing process of automotive parts. However, it is seldom used on ultra-high strength steel due to the high punching force and risk of tool wear. In this paper, study of...

The hydrogen embrittlement (HE) of ultra-high-strength boron steel with different prior austenite grain (PAG) sizes was investigated. By adjusting soaking times and austenitizing temperatures, samples with varying PAG sizes were obtained. The PAG size and dislocation density of the samples were measured...

The paper presents an environmental study of the air basin, soil cover and large water bodies (Terek and Sunzha) in the territory of the Chechen Republic that was conducted by the authors in 2017. The analysis showed that the ecological condition of the

The continuous changes of the hot stamping industries demands lead to challenges in the material selection of produced parts and therefore also in the selection of proper tool steels. Improvement of complex lightweight constructions of sheet material puts high demands on the materials themselves and...

Due to the introduction of hydrogen, there is a serious hydrogen embrittlement problem, which will make the material embrittlement and affect the service life and safety of steel. Therefore, the effect of adding Ti-Mo on the hydrogen embrittlement susceptibility of medium Mn steel was studied in this...

The paper provides the systematic analysis on highland Alpine rocky-scree vegetation of the Central and Eastern Caucasus. In taxonomy the vegetation under consideration is characterized with domination of dicotyledonous, specific family-species spectrum (Caryophyllaceae-species and Fabaceae-subspecies),...

This paper presents a new developed hot stamping die steel with long service life. According to high thermal conductivity and high wear resistance required by hot stamping, the composition and content of alloy elements are scientifically designed by analyzing the influence of each alloy element on the...

Species of plants, forming upper-alpine rock-scree vegetation of Central and Eastern Caucasus, have different habitats, in most cases exceeding the limits of the studied area. Analysing these habitats enables to discover the chorological nature of the researched flora, determine dominating geoelements,...

In this study, the effect of hydrogen charging treatment on the extreme tip bending performance of ultra-high strength automotive steel plates was investigated. After electrochemical hydrogenation, the extreme tip bending angle of the steel plate decreased to varying degrees, and the downward trend began...

This article provides examples of the use of geographic information systems in the Republic of Sakha (Yakutia). The results of the creation of a GIS - project with ethnological expertise of the territories of traditional environmental management of indigenous peoples of the North are presented. Created...

It is easier to realize the “one-mold multi-cavity” forming process for large-scale parts or parts with similar dimensions, and the blank size is similar to facilitate the transport of the manipulator. Since the mold positioning space is sufficient, stable positioning can be obtained with a simple method...

The life form, or a plant habitus as a set of adaptive features reflecting the impact of environmental factors is one of the important indicators of environmental habitat conditions. The study of urban floras identifies directions, dynamics and nature of the anthropogenic transformation of phytobiota...

This article investigates the effect of niobium-vanadium composite microalloying on the strength and toughness of hot press forming steel. The mechanical properties, laminated impact property, ultimate tip cold bending property, and high-speed tensile property of traditional 22MnB5 and niobium-vanadium...

With the increase of hot stamping parts of various varieties and small batches, especially before the development and large-scale production of new energy vehicles, the production line is required to be more suitable for small and medium batches and various materials, which intensifies the hot stamping...

The paper deals with the issues of constructing the distribution of pore throats by size for productive strata of Western Siberia at a known value of the coefficient of absolute permeability. It is shown that for this purpose it is possible to use the Brooks- Corey model, which allows approximating the...

The use of high-performance sheet metal hot stamping and strengthening technology to produce body structures for passenger cars can reduce body weight, improve safety, and contribute to reducing carbon dioxide emissions, and is widely used. China's current hot stamping production capacity is close...

The microstructure and mechanical properties of vanadium micro-alloyed Al-bearing medium-Mn steel were studied by SEM, TEM and EBSD technique. The results show that the microstructure of the steel after intercritical annealing from 710℃ to 770℃ was composed of banded δ-ferrite(δ-F), α- ferrite(F) and...

The paper studies the properties of mineral powder, asphalt binders and structural and mechanical properties of asphalt concrete. Asphalt concrete with ground granulated slag as a mineral powder has high heat, water and frost resistance. The use of mineral powders can reduce the consumption of the binder...

To improve the lightweight level of automotive body and solve the internal hot stamping challenges on tailor-welded door ring such as cracking, wrinkling and local distortion, a finite element model of integral hot stamping of a tailor-welded door ring with differential strength and thickness was built....

As a result of theoretical research of experimental data a polymer highly-filled composite CDC (composite durable cement ) with the gradient of physico-mechanical and antifriction properties changing in depth which together with high strength and durability has an impact resistant viscous core. It...

There is the study outcome of the stress-strain state of single-layer and double-layer reinforced concrete elements with simple bending in the article. The data obtained in numerical experiments on finite element schemes perfectly matches the field tests results.

In response to the severe cracking and wrinkling of the reinforcement part of front side rail, this research designs a replacement solution of high-strength plastic accumulation material (QP1180) and verifies its feasibility through structural optimization, process analysis, mold debugging, and extensive...

Under condition of infill construction pile driving causes an appreciable impact on adjacent buildings, which should be accounted during the works. The work is the first to present the materials obtained in 1990s. The ground was represented by soft and plastic clay with the thickness from 4.5 to 13.0...

This article investigates the effect of niobium-vanadium composite microalloying on the performance of hot press forming B-pillars. Three-point bending experiments and trolley collision performance experiments on B-pillars were conducted. The results showed that during the three-point bending experiment...

The flow distribution of the cooling channel in the hot stamping mold will directly affect the quality of the formed parts in a mold multi-cavity mold. In the actual hot stamping production, the production workers need to monitor the flow of each inlet in real time, but it is often difficult to determine...

The article is devoted to the use of modifying additives into the concrete mix during the construction of multi-storey buildings. Additives accelerating concrete hardening allow it to quickly build upper floors, but increase the cost of concrete mixes. Thus, reduction of the holding time will not be...

For promoting the commercial application of third-generation advanced high-strength steels in the automotive industry, the enhancement of the mechanical properties and formability of medium-Mn steel is becoming a research hotspot. Use of self-developed hot-forming steel, the microstructure evolution...

The existing computational model to determine the strength of inclined sections of bending reinforced concrete elements, adopted in the regulatory documents of the Russian Federation, due to the complex stress-deformed state has significant differences with the actual nature of structure work and requires...

Press hardening steel (PHS) is widely used in the production of automotive components. However, the traditional 22MnB5 steel, during the heating and hot stamping process, tends to develop a substantial amount of loose and easily detachable oxide scale on the surface, negatively impacting the lifespan...

To date carbonate technology for producing Portland cement is the only, and the resulting product is a leader in the production of binders and, according to Russian and foreign scientists, this situation does not change even for many decades. But most researchers hope that a more effective binder with...

The paper presents the results of determining the degree of hydraulic activity of manufactured mineral filler (concrete broken material, demolition of buildings and structures, ceramic brick fights, ash and slag waste from thermal power stations (TPS), substandard raw materials mixed with cement used...

15-5PH samples were prepared using the laser cladding-rollinging compaction hybrid forming process, and the impact mechanism of rolling force on the microstructure and properties of the samples during the composite forming process was systematically studied. The results indicate that under the laser...

With the tightening of energy consumption and emission regulations, automotive lightweight is more and more imperative. Herein, A-pillar upper reinforcement using 1700 MPa ultra-high strength steel (UHSS) 3D roll bending was firstly designed and applied to carbon fiber reinforced plastics (CFRP) side...

The paper presents the results proving the possibility of using the super-plasticizer of the type "Linamix PC" in highly mobile and cast concrete mixes for the production of high-strength concrete. The paper gives results of raw materials tests for the preparation of monolithic compositions of high-strength...

The paper presents the results of studies the role of modern chemical, mineral and micro-reinforcing additives in the process of structure formation of high-strength concrete. The paper reveals the features of the structure formation of cement stone in the presence of a superplasticizer. The paper experimentally...

Automotive parts for lightweight requirements continue to rise, modern body lightweight materials are moving toward the trend of multiple materials composite use. Carbon fiber/hot stamped metal composite panels with lightweight and high strength, excellent corrosion resistance, fatigue resistance and...

The paper presents the results of studies of monolithic concrete mixes and concretes obtained with the integrated use of local natural and manufactured raw materials, including concrete broken materials and crushed bricks. Formulations of filled binders based on finely ground mineral filler from manufactured...

In this article, the design of the 22.5 × 9.00 hot-stamped lightweight wheel was optimized based on finite element analysis of stiffness. To improve the bending and radial stiffness of the wheel, under the condition to meet the requirements of bending and radial loading stress, the finite element stiffness...

With the booming development of new energy vehicles, integrated die casting has become an important means of automotive parts manufacturing, and there is an urgent need for age-free heat-treated aluminium alloys in the industry. Therefore, a new ageing-free heat-treated aluminium alloy was developed...

The article presents an analysis of the experience of using the products of buildings and structures demolition, the technology of recycling secondary raw materials to produce secondary raw materials for concrete. The results of tests of heavy high-strength concrete (HSC) on the base of filled binders...

The configuration of the 22.5 × 9.00 hot-stamped lightweight wheel was optimized based on finite element stress analysis in this article. To reach the goal of reducing working stress and meeting the experimental requirements along with the experimental enhancement coefficient, under the optimized condition...

The evolution of automobiles necessitates a balance between weight reduction and enhanced safety. Leveraging the hot stamping technique for manufacturing aluminum alloy and carbon fiber-reinforced polymer (CFRP) composites laminate offers significant potential in the automotive sector due to their advantageous...

The work is devoted to the study of the parameter influence on the relative position tower crane and the panel warehouse on the construction site. Due to the nonlinearity and trigonometricity of the equations obtained, they are solved numerically using a specially compiled computer program. The goal...

A hydrometallurgical technology has been proposed for processing the refractory part of the lining of aluminum production electrolysers dismantled and disabled for overhaul. Fluorine-containing compounds are transferred to the solution, which allows obtaining cryolite for being used in the electrolysis...

As a potential third-generation high-strength steel, the medium manganese steel has broad application prospects. Hot stamping technology can effectively solve the problems of large springback and large forming resistance in the cold stamping process of medium manganese steel. However, the hot stamped...

Aluminum alloy hot stamping is an important means to achieve automobile lightweight, and the friction and wear caused by aluminum alloy adhesion in the production process is an inevitable problem. Lubrication can reduce friction and wear, but there is no special lubricant for aluminum alloy hot stamping,...

The article justifies the need to take into account the structural strength of soils in the calculations of the base foundations yielding, as well as limiting the depth of the compressible thickness of the base by the value of the structural soil strength. The concept of the depth of the compressible...

The mechanical properties of medium manganese steels with TRIP effect, which are typical of third generation automotive steels due to their high strength and plasticity are heavily dependent on their microstructure. Therefore, realistic microstructure based computational modeling of the mechanical behavior...

During burning of Portland cement clinker, a large amount of both clinker and aspiration dust accumulates in electrostatic precipitators and rotary kilns; therefore, rational use of these products containing a certain portion of a complete raw material is an important task in the cement industry. It...

Hot stamping technology is an effective way to achieve lightweight vehicles using aluminum alloy. Aluminum alloy is increasingly used in automobile manufacturing due to its high specific strength and recyclability. However, severe high-temperature friction and wear during the hot stamping forming process...

The influence of carbon dioxide on swelling, size of particles, intensity of sedimentation, jellification time, pH value, chemical composition of sediments from suspensions is studied bentonites of two types NaM and CaM in the field of the Chechen Republic for. It is shown that carbon dioxide is well...

Infrared temperature measurement technology is widely used in the detection of surface temperature distribution of hot stamping parts. However, the accurate infrared temperature measurement for complex parts is still a problem due to the deviation of emissivity. In this study, a novel directional emissivity...

This paper presents the data of changes in the coefficient of thermal expansion of composite reinforcement and heavy concrete in a wide temperature range. Studies allow not only to justify the high stability of the BPA in terms of thermal expansion, but also to assess the subtle effects of measured parameters...

Carbon fiber composites have a wide range of applications in body lightweighting due to their light weight, large friction coefficient and excellent mechanical properties. In the forming of body parts and subsequent operation, the composites have high requirements of available high temperature lubrication...

We present the results of studies of vermiculite concrete composites with various silica components such as cinder, tuff sand and volcanic ash for fire protection of building structures. The study shows that introduction of saponified wood resin into the vermiculite concrete mixture improves its rheological...

Infrared thermal imaging system is a key component in hot stamping and is commonly used to collect parts temperature during the part production process. However, due to the inappropriate setting of the emissivity, the output produced via such system usually lack accuracy and consistency. A ± 150 ℃ temperature...

Coated ultra-high strength steel (UHSS) has been used in the hot stamping process. The high-temperature friction and wear of coated UHSS during hot stamping may affect its formability and tool life. The effect of temperature on the friction behaviors of alloyed galvannealed (GA), galvanized (GI) and...

The article analyzes research prospects of porous powder mineral materials for stabilizing additives used for macadam mastic asphalt concrete mixtures. The interaction of finely dispersed crushed claydite powder with a bituminous binder was studied. Efficiency of the use of expanded clay powder as a...

In order to eliminate the error caused by the spatial angle between the camera and the target, it is necessary to correct the image resolution or spatial resolution error caused by the distance change in the same field of view for the monitoring of the mold loading and unloading temperature of the hot...

The article touches upon the issue of the assessment of the effect of atmospheric carbon dioxide on the development of creep deformations in autoclaved aerated concrete. The authors carried out the extensive experimental and theoretical studies of creep deformation and its reversibility on prisms with...

Zinc-based coating hot forming steel has good cathodic protection characteristics, which makes up for the deficiency of corrosion resistance of aluminum-silicon coating products. However, in the process of hot forming, due to the existence of high temperature liquid zinc, it is easy to cause the problem...

In the article the analysis with the generalization of experimental and theoretical studies of foreign and Russian scientists is given in order to compare, substantiate and refine existing scientific theories and statements on the nature and mechanism of carbonation factor effect on shrinkage properties...

In order to detect whether the blanking position of the hot stamping blank is correct, an infrared detection system for the position of the high temperature blank is developed. This infrared image of the production process is obtained by the thermal imager. Based on the temperature difference between...

The article deals with topical issues of determining the accuracy of geometric characteristics of buildings and structures by modern means of geodetic measurements. The method of testing high-precision electronic total stations under production conditions is proposed to evaluate and improve the accuracy...

The surface morphology of aluminum-silicon coated press hardening steel with different heating time was studied by scanning electron microscopy, and the AS150 and AS60 coatings were also compared. The results show that the dendrite phase can be formed when AS150 is heated for 3min, and the granular Al-Fe...

It is an effective means to make automotive structural parts of medium manganese steel, which is highly plastic, to achieve lightweight, but the martensite phase change occurs in the formation of manganese steel, which changes its mechanical properties and makes it difficult to evaluate the service performance...

As a result of the literature sources analysis, it was concluded that the geometrical parameters offered in the scientific and technical literature to determine the deformed shape of buildings and defence stores and to restore the operational reliability do not fully characterize the object state. The...

The present study delves into the influence of heat treatment temperature on microstructural and mechanical properties of aluminum silicon coatings applied to hot-formed steel substrates. Utilizing scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and microhardness testing, a...

At present, the use of Hot-forming 3D five-axis laser cutting in automotive body parts is very mature. With the maturity of Hot-forming industry technology and the continuous cost reduction requirements from auto OEMs to Hot forming parts suppliers, automotive Hot-forming parts Suppliers’ requirements...

The paper presents the results of an experimental study considering the dependence of the surface tension of bentonite aqueous suspensions on the concentration of the solid phase and the time of the surface formation. To conduct experimental studies, a new technique has been developed, which allows leveling...

Changing the direction of flow in a porous medium, in reservoir conditions, is important for increasing the flow of oil to the bottom of the well. The use of flow diverting technologies contributes to the alignment of the injectivity profile of injection wells and the selection profile in producing wells....

The industrial-grade laser cutting machine studied by the author, it can cut metal sheets accurately and reliably without damaging the surface of the sheet. And experienced many years and multiple sets of cutting production verification. This kind of cutting machine adopts a belt to support the sheet...

Based on the important demand of energy saving and emission reduction, press hardening steels have been widely used in automobile. In order to avoid oxidation of the steel during hot stamping process, aluminum-silicon coating is used. The mechanical properties of thin aluminum-silicon coating press hardening...

The main requirements and conditions for the formation of the physical and physicomechanical properties of high-strength quasi-nanostructural polymer composites are given. Methods for reducing porosity and increasing the density of the polymer composite structure have been studied. Cement stone is considered...

High-strength steel/high-strength aluminum hot stamping production lines are popularized around the world. In addition to presses, the conventional key equipment is mostly roller bottom continuous heating furnaces or multi-module multilayer chamber furnaces, as well as the supporting production line...

The article presents the outcomes of experimental research on reinforcement voltage loss caused by creep of autoclaved aerated concrete for the preliminary stressed aerated members. It has been stated that the losses have linear dependence on the initial level of reduction in aerated concrete in the...

In recent years, the press hardening steel with thin aluminum silicon coating independently developed by relevant domestic institutions has gradually been applied in the automotive industry. The issue of whether thin aluminum silicon coated press hardening steel can replace traditional aluminum silicon...

The hot stamping mechanical servo press adopts the driving and control technology of high-torque direct-drive servo motor and high-speed heavy-load screw drive system, which reduces the driving chain, improves the overall driving efficiency and control accuracy of the press, and improves the dynamic...