Effect of sub-zero deformation temperatures and rolling directions on the formability of AISI 316 stainless steel sheets

Effect of sub-zero deformation temperatures and rolling directions on the formability of AISI 316 stainless steel sheets

Rachele Bertolini, Enrico Simonetto, Andrea Ghiotti, Stefania Bruschi

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Abstract. Sheet forming carried out at sub-zero temperatures is gaining more and more interest for deforming metal sheets as it can represent an alternative to room temperature forming to increase the sheet metal formability and to high-temperature forming to avoid the need for subsequent heat treatments aimed at restoring the alloy microstructural characteristics. In this framework, the present work deals with mechanical testing of AISI 316 stainless steel sheets in a wide range of temperatures, namely from -100°C to 700°C, and rolling directions. After mechanical testing, the strain at ultimate tensile strength, identified as an indicator of steel formability, was measured at varying process conditions. Then, the samples were analyzed in terms of microstructural features, micro-hardness, and martensite formation. The obtained results showed that deforming at -50°C induced a substantial increase in formability preserving the hardness, compared to testing at higher temperatures.

Stainless Steel, Tensile Strength, Cryogenic Forming

Published online 9/5/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Rachele Bertolini, Enrico Simonetto, Andrea Ghiotti, Stefania Bruschi, Effect of sub-zero deformation temperatures and rolling directions on the formability of AISI 316 stainless steel sheets, Materials Research Proceedings, Vol. 35, pp 318-325, 2023

DOI: https://doi.org/10.21741/9781644902714-38

The article was published as article 38 of the book Italian Manufacturing Association Conference

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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