期刊
SCRIPTA MATERIALIA
卷 165, 期 -, 页码 68-72出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.02.013
关键词
Lightweight steel; Ductility; Hole expansion ratio; Bending test; B2 phase
类别
资金
- POSCO, Korea
Tensile properties and formability of B2-strengthened Fe-15Mn-10A1-0.8C-5Ni and Fe-16Mn-8A1-1C-5Ni light-weight steels have been investigated. Our results show that tensile properties along rolling and transverse directions as well as formability are strongly affected by the morphology of B2. The removal of B2 bands and a development of more homogeneous microstructure containing fine B2 particles in Fe-16Mn-8A1-1C-5Ni steel results in isotropic tensile properties and significant improvement of formability compared to B2 bands containing Fe-15Mn-10A1-0.8C-5Ni steel. Moreover, such improvements are achieved without any degradation of tensile properties, despite a much lower fraction of B2 particles in the former than the latter. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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