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9 在733 K和4×10-4 s-1条件下断裂试样近裂纹尖端区域的表面形貌

Fig.9 Surface morphologies near the fracture tip deformed at 733 K and 4×10-4 s-1: (a) secondary electron micrograph; (b) back-scattered electron micrograph