| Autor: |
Rakan, Alturk, William E, Luecke, Steven, Mates, A, Araujo, K S, Raghavan, Fadi, Abu-Farha |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Procedia Eng |
| ISSN: |
1877-7058 |
| Popis: |
In this study, the effects of strain rate on the mechanical properties and the strain-induced austenite-to-martensite transformation in type 201 austenitic stainless steel (SS201) were investigated. This grade was selected as a low-cost stainless steel with good lightweighting potential for automotive applications. The material was tested in tension at a quasi-static rate (5×10(−2) s(−1)), two low-intermediate rates (10(0) s(−1) and 10(1) s(−1)), and a high rate (5×10(2) s(−1)). 3D digital image correlation was used to enable accurate strain measurements during mechanical testing. Magnetic induction and X-ray diffraction were used ex-situ of deformation to measure the volume fraction of martensite formed at each strain rate, for different plastic strain levels. The effects of strain rate on deformation-induced martensite formation and on the stress/strain behavior was determined in this study, and was compared to results reported in the literature for 300 series austenitic stainless steels. The results show a favourable response for the SS201, which exhibits a substantial increase in strength and energy absorption at high rates without compromising tensile ductility. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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