【摘要】 利用亚稳奥氏作不锈钢低温拉伸曲线的特点，提出了表征相变诱发塑性增量的量化指标：单位体积分数的马氏体诱发的平均塑性增量 Ｄ及本征塑性增量 ＤＩ；且 Ｄ近似等于 ＤＩ．对三种材料的相变诱发塑性的研究表明：钢中碳含量的增加使Ｄ值降低，降低层错能的合金元素有利于Ｄ的增加，而应变速率对Ｄ不产生明显的影响．更多还原

【Abstract】 Based on the tensile curves of 3 kinds of metastable austenitic stainless steels, the quantitative parameters--averaging M--transformation--induced plasticity increment of per unit volume fraction of martensite, D, and intrinsic plasticity increment DI have been proposed in this paper, and D is approaching to DI. Experimental results showed that D value decreases with increasing carbon content, and the decrease of Stacking fault energy is beneficial to D value, the strain rate has no obvious effect on D.更多还原