梯度纳米晶NiTi形状记忆合金的超弹性和形状记忆效应相场模拟1)

徐波, 康国政

PHASE FIELD SIMULATION ON THE SUPER-ELASTICITY AND SHAPE MEMORY EFFECT OF GRADIENT NANOCRYSTALLINE NiTi SHAPE MEMORY ALLOY1)

Xu Bo, Kang Guozheng

图7 梯度晶粒的纳米多晶NiTi合金系统应力辅助双程形状记忆过程中微结构演化的模拟结果(各图片与图6中选取的代表点对应). 颜色条表示$\eta $ 的值, 即$\eta = 0$, 1和$-1$分别表示奥氏体,$+$M和$-$M马氏体变体

Fig. 7 Simulated microstructure evolution obtained in the stress-assistedtwo-way shape memory process of the gradient nanocrystalline NiTi alloy system (pictures correspond to the representative points selected in Fig. 6). The color legend denotes the value of $\eta $, where $\eta =0$, 1and $-1$ represent the austenite, $+$M and $-$M variants, respectively