High Speed Deformation of Ultrafine Grained TWIP Steel
- 2 October 2007
- journal article
- Published by Trans Tech Publications, Ltd. in Materials Science Forum
- Vol. 561-565, 107-110
- https://doi.org/10.4028/www.scientific.net/msf.561-565.107
Abstract
Tensile properties of twinning induced plasticity (TWIP) steels (31%Mn-3%Al-3%Si-Fe) with various mean grain sizes ranging from ultrafine grain size (1.1μm) to conventional one (35.5μm) at a wide range of strain rates from 10-3sec-1 to 103sec-1 were studied. The ultrafine grained TWIP steel exhibits a large work hardening and keeps an adequate elongation at any strain rate. The strength held to the Hall-Petch relationship at each strain rate and the Hall-Petch slopes do not change largely.Keywords
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