A1 Journal article (refereed), original research (Journal article, original research)

Effects of manufacturing parameters, heat treatment, and machining on the physical and mechanical properties of 13Cr10Ni1.7Mo2Al0.4Mn0.4Si steel processed by laser powder bed fusion


Open Access hybrid publication


Publication Details

Authors: Afkhami Shahriar, Javaheri Vahid, Dabiri Edris, Piili Heidi, Björk Timo

Publisher: Elsevier

Publication year: 2022

Language: English

Related journal or series: Materials Science and Engineering: A

ISSN: 0921-5093

eISSN: 1873-4936

JUFO level of this publication: 2

Digital Object Identifier (DOI): http://dx.doi.org/10.1016/j.msea.2021.142402

Permanent website address: https://www.sciencedirect.com/science/article/pii/S092150932101666X

Open Access: Open Access hybrid publication


Abstract

This study investigates the effects of build orientations, heat treatment, and mechanical machining (as processing and post-processing factors) on the microstructure, quasi-static mechanical properties, strain hardening, notch toughness, and residual stress of additive manufactured 13Cr10Ni1.7Mo2Al0.4Mn0.4Si maraging stainless steel, known commercially as CX. The material investigated in this research was processed using the laser powder bed fusion (L-PBF) method as the additive manufacturing process. The results show that stainless steel CX had an anisotropic behavior under quasi-static tensile loads in its as-built condition. However, heat treatment significantly increased the strength of the material and eliminated the anisotropy in the strength levels. In addition, building orientation did not significantly affect the microstructure, hardness, and notch toughness. Further, retained austenite proved to have a role in determining the ductility and strain hardening of CX. Finally, the heat treatment utilized in this study proved to be effective in improving the mechanical properties employing shorter times and lower temperatures compared to the treatments used in other studies from the literature.


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Last updated on 2021-03-12 at 09:05