片层取向对Ti-49at%Al PST晶体断裂机制的影响

1.北京科技大学,北京,100083;北京航空航天大学材料科学与工程系,北京,100083

2.北京航空航天大学材料科学与工程系,北京,100083

3.北京科技大学,北京,100083

4.北京科技大学,北京,100083

5.北京航空航天大学材料科学与工程系,北京,100083

6.北京科技大学,北京,100083

基金项目: 中国科学院资助项目(59895153)

Effect of Loading Direaction on the Fracture Mechanism of PST Crystals of Ti-49at% Al Alloys

用SEM原位拉伸技术研究了Ti-49at% Al PST晶体的断裂过程.研究表明:裂纹萌发和扩展路径强烈依赖于PST晶体的片层取向;不同取向PST晶体具有不同的断裂机制及断口形貌.

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