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The Fe–25Mn–3Si–3Al TWIP steel was microalloyed by niobium in this paper, and the appropriate heat treatment and cold rolling processes were drafted in order to improve the poor yield strength of the steel. The results show that the yield strength of the steel increases from 320MPa to 445MPa, and the tensile strength increases from 680MPa to 795MPa, but the uniform elongation decreases from 65% to...
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