High Speed Deformation of Ultrafine Grained TWIP Steel

Rintaro Ueji; Kenji Harada; Noriyuki Tsuchida; Kazutoshi Kunishige

doi:10.4028/www.scientific.net/MSF.561-565.107

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HomeMaterials Science ForumMaterials Science Forum Vols. 561-565High Speed Deformation of Ultrafine Grained TWIP...

High Speed Deformation of Ultrafine Grained TWIP Steel

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.

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Periodical:

Materials Science Forum (Volumes 561-565)

Pages:

107-110

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.561-565.107

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Online since:

October 2007

Authors:

Rintaro Ueji, Kenji Harada, Noriyuki Tsuchida, Kazutoshi Kunishige

Keywords:

Hall-Petch Relationship, High Speed Deformation, Twinning Induced Plasticity (TWIP) Steel, Ultrafine Grained

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