Comparative Study on Mechanical and Metallurgical Characteristics of Friction Welded Joints from Al 6061 and Mg AZ31B by Varying Interface Geometries

DOI

10.2991/978-94-6463-922-3_30How to use a DOI?

Keywords

Rotary friction welding; Taguchi’s L9 orthogonal array; Intermetallic compounds; Dynamic recrystallization

Abstract

Rotary friction welding (RFW) is a solid-state joining process that employs frictional heat generated at the interface of a rotating and a stationary specimen under axial compression. In this work, dissimilar joint of Al 6061 with flat interface and Mg AZ31B with varying taper angles (30⁰, 45⁰, 60⁰) were fabricated using RFW. The experiments were designed using Taguchi’s L9 orthogonal array with three parameters - friction pressure, friction time, taper angle —each at three levels. Mechanical characteristics of joints were evaluated using tensile test and Vickers microhardness test. Microstructure evaluation was done using an optical microscope. The joint produced with friction pressure 90 MPa, friction time 20 s, and taper angle 60⁰ exhibited the highest tensile strength of 51.7 MPa, which is 23.5% of the strength of base material magnesium AZ31B. The taper angle had more influence on tensile strength followed by friction pressure. All joints fractured at the interface showing brittle nature, due to intermetallic compounds formed at the interface. In the microstructure, moving from parent to weld interface grains become more finer in the Mg AZ31B, due to the dynamic recrystallization whereas aluminium alloy showed minimal grain structure change. Highest hardness was observed at the weld zone due to grain refinement and intermetallic compound formation.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Vineeth Narayanan
AU  - Baiju Sasidharan
AU  - Mathew John
AU  - P. M. Makesh
PY  - 2025
DA  - 2025/12/25
TI  - Comparative Study on Mechanical and Metallurgical Characteristics of Friction Welded Joints from Al 6061 and Mg AZ31B by Varying Interface Geometries
BT  - Proceedings of the International Conference Recent Advances in Materials, Processes and Technology for Sustainability (RAMPTS 2025)
PB  - Atlantis Press
SP  - 459
EP  - 470
SN  - 2590-3217
UR  - https://doi.org/10.2991/978-94-6463-922-3_30
DO  - 10.2991/978-94-6463-922-3_30
ID  - Narayanan2025
ER  -