On the development of twinning-induced plasticity in additively manufactured 316L stainless steel

Crociata, D. Della; Maskery, I.; Hague, R.; Simonelli, M.

Abstract

A report on twinning-induced plasticity in 316L stainless steel manufactured by metal additive manufacturing (AM) is presented. A tapered tensile test geometry was used which enabled the investigation of twin formation over a range of strain levels in a single specimen. Hardness and twinning concentration were observed to increase with strain up to peak values of 380 ± 10 HV and 28 ± 4%, respectively. Furthermore, twin formation was found to be regulated by grain size and crystal texture. This methodology can be applied to new AM materials development and will inform the design of energy-absorbing structures that maximise the benefits of AM design and strain-hardenable materials.

Citation

Crociata, D. D., Maskery, I., Hague, R., & Simonelli, M. (2023). On the development of twinning-induced plasticity in additively manufactured 316L stainless steel. Additive Manufacturing Letters, 7, Article 100176. https://doi.org/10.1016/j.addlet.2023.100176

• Journal Article Type: Article
• Acceptance Date: Oct 10, 2023
• Online Publication Date: Oct 11, 2023
• Publication Date: 2023-12
• Deposit Date: Nov 22, 2023
• Publicly Available Date: Nov 24, 2023
• Journal: Additive Manufacturing Letters
• Print ISSN: 2772-3690
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 7
• Article Number: 100176
• DOI: https://doi.org/10.1016/j.addlet.2023.100176
• Keywords: Powder bed fusion, Twinning-induced plasticity, Stainless steel, Phase transformation
• Public URL: https://nottingham-repository.worktribe.com/output/25958127
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S2772369023000567?via%3Dihub