图4. 不同Mn含量双相不锈钢试样在不同温度条件下拉伸的加工硬化率-应变曲线
Fig.4. Strain hardening rate-strain curves of different Mn addition duplex stainless steel samples under tensile temperatures of 300 ℃ (a), 550 ℃ (b), 800 ℃ (c) and 1050 ℃ (d) (εp—peak strain)