Test results show that for the stress-strain curves with no obvious peak strain, it is a available to use work hardening rate method to determine peak strain and stable strain.

实验结果表明，对于无明显峰值应变的应力-应变曲线，采用加工硬化率方法确定峰值应变和稳态应变是一种有效的方法。

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The stress increased slowly with strain increased when strain was above 5%, and work hardening rate decreased.

当应变量大于5%时，应力随着应变的增加而缓慢增加，加工硬化速率降低。

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Mechanical tests Several types of mechanical test were performed in order to investigate the effect of the stress state on the austenite transformation rate and on the resulting work hardening.

机械性能测试为了研究应力状态对于奥氏体转变速率和加工硬化结果的影响，我们进行了几种机械性能方面的试验。

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