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In situ scanning electron microscopy observation of deformation and fracture behavior of Ti-3Zr-2Sn-3Mo-25Nb alloy |
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| Authors: | Xiqun Ma Zhentao Yu Yong Han Xiping Song Qiaoyan Sun |
| Affiliation: | 1. Northwest Institute for Nonferrous Metal Research,Xi'an 710016,China 2. State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an 710049,China 3. State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beiiing 100083,China |
| Abstract: | 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 (????) promotes deformation-induced martensitic transformation to ductile fracture, whereas the omega (??) and alpha (??) phases drastically prevent slip dislocation and deformation-induced martensitic transformation to brittle fracture. |
| Keywords: | titanium alloys metastable phases martensitic phase transformation deformation |
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