借助d电子理论计算,设计并制备了具有较高Kβ稳定参数的生物相容性β型Ti-26 Nb-28Ta-5.5Zr(％(质量分数),Kβ～1.61)合金.综合利用万能电子试验机测试、显微硬度测试、X射线衍射分析和透射电子显微学观察等方法,研究了该合金固溶态时的压缩性能、变形机制以及不同变形量对应的显微结构特征.结果表明:固溶态β型Ti-26Nb-28Ta-5.5Zr合金具有较好的塑性,其屈服强度约为450 MPa.当变形量为7％时,其形变机制为位错滑移；当形变量为50％时,严重影响变形结构特征的塑性变形机制主要为应力诱发α"马氏体相变；而当形变量为75％时,除了α"马氏体相变、还观察到明显的非均匀局域化变形.
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