Microstructural Evolution and Mechanical Anisotropy of AA6061 Fabricated by Additive Friction Stir Deposition

U. Ashok Kumar; Harshith Karanam; M. V. S. Vamsy Krishna; Sohail Shaik

doi:10.2991/978-94-6239-764-4_11

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Microstructural Evolution and Mechanical Anisotropy of AA6061 Fabricated by Additive Friction Stir Deposition

Authors

U. Ashok Kumar¹^{, *}, Harshith Karanam¹, M. V. S. Vamsy Krishna¹, Sohail Shaik¹

¹Department of Mechanical Engineering, University College of Engineering (A), Osmania University, Hyderabad, India

^*Corresponding author. Email: uak.oumech@gmail.com

Corresponding Author

U. Ashok Kumar

Available Online 4 September 2026.

DOI: 10.2991/978-94-6239-764-4_11 How to use a DOI?
Keywords: AA6061; Additive Friction Stir Deposition; Heat Treatment; Mechanical Properties; Microstructure
Abstract: The growing demand for lightweight, high-performance structural components has increased interest in solid-state additive manufacturing methods for aluminum alloys. Additive Friction Stir Deposition (FSD) is a solid-state process that builds material layer by layer through severe plastic deformation and frictional heating without melting, thereby reducing porosity, residual stresses, and solidification-related defects common in fusion-based techniques. In this study, AA6061 alloy was fabricated using AFSD at traverse speeds of 250, 300, and 350 mm/min with tool rotational speeds of 900, 1120, and 1400 rpm to evaluate the influence of processing parameters on mechanical and micro structural behavior. The deposits were characterized using tensile testing, Vickers microhardness measurements, pin-on-disc wear testing, and optical microscopy in both as-deposited and heat-treated conditions. Microstructural analysis revealed refined equiaxed grains and strong interlayer bonding, demonstrating that AFSD can provide competitive mechanical performance with enhanced ductility and structural integrity.
Copyright: © 2026 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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Volume Title: Proceedings of the International Conference on Mechanics, Materials and Mechatronics (ICM³ 2026)
Series: Atlantis Highlights in Engineering
Publication Date: 4 September 2026
ISBN: 978-94-6239-764-4
ISSN: 2589-4943
DOI: 10.2991/978-94-6239-764-4_11 How to use a DOI?
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.

Cite this article

ris enw bib

TY  - CONF
AU  - U. Ashok Kumar
AU  - Harshith Karanam
AU  - M. V. S. Vamsy Krishna
AU  - Sohail Shaik
PY  - 2026
DA  - 2026/09/04
TI  - Microstructural Evolution and Mechanical Anisotropy of AA6061 Fabricated by Additive Friction Stir Deposition
BT  - Proceedings of the International Conference on Mechanics, Materials and Mechatronics (ICM³ 2026)
PB  - Atlantis Press
SP  - 122
EP  - 140
SN  - 2589-4943
UR  - https://doi.org/10.2991/978-94-6239-764-4_11
DO  - 10.2991/978-94-6239-764-4_11
ID  - Kumar2026
ER  -

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