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2 超弹性应力-应变曲线: (a) 均匀晶粒尺寸(分别约15 nm和100 nm[19])和梯度纳米晶NiTi合金系统的模拟结果;(b) 均匀晶粒尺寸约18 nm[7]、粗晶粒和梯度纳米晶NiTi合金板[13]的实验结果

Fig. 2 Super-elastic stress-strain curves: (a) Simulated results of the uniform-grained (about 15nm and 100nm[19], respectively) and gradient nanocrystalline NiTi alloy systems; (b) experimental ones of the uniform-grained (about 18nm[7]), coarse-grained and gradient nanocrystalline NiTi plates[13]