Composition Optimization and Microstructure Control of Ti-Zr Base Biomedical Superelastic Alloys

本研究的目的是开发一种由生物相容性合金元素组成的新型β-Ti基超弹性合金。系统研究了合金元素对Ti-Zr-Nb-（O，N）合金的相变温度、晶体结构和力学性能的影响。建立了具有大回复应变和高超弹性应力的Ti-Zr基超弹性合金的合金设计原则。研究了热变形条件对合金组织和力学性能的影响，确定了各合金的最佳热变形条件。

The objective of this research is to develop novelβ-Ti base superelastic alloys composed of biocompatible alloying elements. The effects of alloying elements on transformation temperature, crystal structure and mechanical properties of Ti-Zr-Nb-(O,N) alloys were systematically investigated. As a result, the alloy design principle for Ti-Zr base superelastic alloys with a large recovery strain and high superelastic stress was established. The effect of thermomechanical conditions on microstructure and mechanical properties was also investigated, and the optimum thermomechanical condition for each alloy was established.