Work hardening for powder bed fusion–laser beam (PBF-LB) AlSi10Mg alloy manufactured at different orientations and its application for Vickers hardness evaluation

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Crawford, G and Serjouei, A ORCID: https://orcid.org/0000-0002-7250-4131, 2025. Work hardening for powder bed fusion–laser beam (PBF-LB) AlSi10Mg alloy manufactured at different orientations and its application for Vickers hardness evaluation. The International Journal of Advanced Manufacturing Technology. ISSN 0268-3768

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Official URL: https://doi.org/10.1007/s00170-025-15659-9

Abstract

Powder bed fusion–laser beam (PBF-LB) is one of the additive manufacturing (AM) techniques that have grown in demand in recent years due to the ability to produce extremely lightweight, ultra-high-strength metals necessary for the aerospace industry. Aluminium alloys such as AlSi10Mg manufactured using PBF-LB exhibit anisotropic mechanical behaviour and variable plastic deformation characteristics, posing challenges for broader structural applications. This paper presents a comprehensive overview of the mechanical properties of AlSi10Mg, covering ultimate tensile stress (UTS), elongation at fracture, yield stress (YS), work hardening, hardening capacity, toughness, and hardness. Hollomon and Voce methods are used for approximating work hardening of PBF-LB AlSi10Mg printed at different orientations. Improved Hollomon and Voce approximations are presented using Levenberg–Marquardt (LM) least square method, and it is shown that improved Hollomon and Voce approximations show superior accuracy in predicting work hardening behaviour of the material compared to the original Hollomon and Voce approximations. A unique method of obtaining Vickers hardness of AM materials purely from tensile testing and use of work hardening, rather than direct hardness testing, is also presented, which potentially reduces the time and cost of hardness testing, especially in the absence of hardness testing facilities.

Item Type:	Journal article
Publication Title:	The International Journal of Advanced Manufacturing Technology
Creators:	Crawford, G. and Serjouei, A.
Publisher:	Springer Science and Business Media LLC
Date:	8 May 2025
ISSN:	0268-3768
Identifiers:	Number Type 10.1007/s00170-025-15659-9 DOI 2437407 Other
Rights:	© The Author(s) 2025. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
Divisions:	Schools > School of Science and Technology
Record created by:	Laura Borcherds
Date Added:	13 May 2025 16:45
Last Modified:	13 May 2025 16:45
URI:	https://irep.ntu.ac.uk/id/eprint/53580