层错能对面心立方金属形变机制与力学性能的影响

张哲峰, 李克强, 蔡拓, 李鹏, 张振军, 刘睿, 杨金波, 张鹏

Effects of Stacking Fault Energy on the Deformation Mechanisms and Mechanical Properties of Face-Centered Cubic Metals

ZHANG Zhefeng, LI Keqiang, CAI Tuo, LI Peng, ZHANG Zhenjun, LIU Rui, YANG Jinbo, ZHANG Peng

图7 纯Cu及Cu-Al合金低周(含超低周)疲劳基本性能[37]

Fig.7 Fundamental low cycle fatigue (ultra-low cycle fatigue) properties of pure Cu and Cu-Al alloys[37] (a) cyclic hardening curves (total strain amplitude Δε / 2 = 8.0%) (b) strain-life (E-N) curves (c) change of Wa with the number of cycle N (Δε / 2 = 8.0%, Wa—hysteresis energy) (d) hysteresis energy-life (W-N) curves (Ws—saturated hysteresis energy)