In situ scanning electron microscopy observation of deformation and fracture behavior of Ti-3Zr-2Sn-3Mo-25Nb alloy

被引:1
|
作者
MA Xiqun a
机构
基金
国家高技术研究发展计划(863计划);
关键词
titanium alloys; metastable phases; martensitic phase transformation; deformation;
D O I
暂无
中图分类号
TG131 [合金学理论];
学科分类号
080502 ;
摘要
The plastic deformation and fracture processes of Ti-3Zr-2Sn-3Mo-25Nb alloy for surgical implants were directly observed by in situ scanning electron microscopy(SEM).The effect of phase transformations on deformation-induced martensitic transformation accompanying the cyclic tensile fracture processes was investigated.The results reveal that the metastable alpha martensites(α″) promotes deformation-induced martensitic transformation to ductile fracture,whereas the omega(ω) and alpha(α) phases drastically prevent slip dislocation and deformation-induced martensitic transformation to brittle fracture.
引用
收藏
页码:318 / 322
页数:5
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