微观组织演变对细晶Mg-Y-Nd合金超塑性性能的影响

曹耿华,郑振兴,刘一雄,王敏,李纬华

Influence of Microstructure Evolution on Superplastic Properties of Fine-grained Mg-Y-Nd Alloy

Genghua CAO,Zhenxing ZHENG,Yixiong LIU,Min WANG,Weihua LI

图4 在不同测试条件下夹持区域的微观组织形貌

Fig.4 OM images of grip region in fractured specimens at different test conditions (a, b, c) 683 K; (d, e, f) 708 K; (g, h, i) 733 K; (j, k, l) 758 K; (a, d, g, j) 2×10-2 s-1; (b, e, h, k) 3×10-3 s-1; (c, f, i, l) 4×10-4 s-1