| 江鸿,唐娇娇.形变热处理对Ti-Nb-Zr合金组织及超弹性行为的影响[J].有色金属材料与工程,2024,45(1):49-58. |
| 形变热处理对Ti-Nb-Zr合金组织及超弹性行为的影响 |
| Effect of thermomechanical treatment on microstructure and superelastic behavior of Ti-Nb-Zr alloys |
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| DOI：10.13258/j.cnki.nmme.20221025002 |
| 中文关键词: Ti-Nb-Zr合金 形变热处理 超弹性 弹性模量 马氏体相变 |
| 英文关键词:Ti-Nb-Zr alloy thermomechanical treatment superelasticity elastic modulus martensitic transformation |
| 基金项目:上海理工大学医工第四批医工交叉重点支持项目（10-22-310-508） |
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| 中文摘要: |
| Ti-Nb-Zr合金具有低弹性模量、高强度以及优异的生物相容性，在生物医用材料领域备受关注。Ti-Nb-Zr合金的超弹性归因于β?α″相变。综述了Ti-Nb-Zr合金的弹性模量和超弹性的影响因素及变化规律。通过添加合金元素来调整相变温度和滑移临界应力，应力诱发马氏体相变更易发生，β相塑性变形延迟出现，获得更大的相变应变和恢复应变。总结了Ti-Nb-Zr合金的形变热处理与超弹性效应之间的关系和作用机制。冷轧后短时间热处理可以增加位错滑移的临界应力、避免其他相（ω或α相）的生长，保持β相的稳定性、提高合金的恢复应变和超弹性。 |
| 英文摘要: |
| Ti-Nb-Zr alloys have attracted much attention in the field of biomedical materials due to their low elastic moduli, high strengths and excellent biocompatibility. The superelasticity of Ti-Nb-Zr alloy is attributed to the β?α″ transformation. The influencing factors and variation regularity on the elastic moduli and superelasticity of Ti-Nb-Zr alloys were reviewed. By adding alloying elements to adjust the phase transition temperature and critical slip stress, the stress-induced martensitic transformation more easily occurs, the occurrence of β phase plastic deformation is delayed, resulting in larger phase transformation strain and recovery strain. The relationship and affecting mechanism between thermomechanical treatment and superelasticity of Ti-Nb-Zr alloys were summarized. Short-time heat treatment after cold rolling can increase the critical stress for dislocation slip, avoid the growth of the other phase (ω phase or α phase), maintain the β phase stability, and improve the recovery strain and superelasticity. |
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