...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Materials Science and Engineering >Effect of annealing temperature on the microstructure and superelasticity of Ti-19Zr-10Nb-1Fe alloy
【24h】

Effect of annealing temperature on the microstructure and superelasticity of Ti-19Zr-10Nb-1Fe alloy

机译：退火温度对Ti-19Zr-10Nb-1Fe合金组织和超弹性的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The effects of annealing temperature on the microstructure, mechanical properties and superelasticity of Ti-19Zr-10Nb-lFe alloys were investigated. The as-rolled alloy was annealed at temperatures between 823 K and 1173 K. The alloy annealed at 823 K consisted of major β and partial a phases. Equiaxed β grains with nanoscale u precipitates were observed in the alloys annealed above 873 K. The α/β transus temperature and recrystallization temperature of Ti-19Zr-10Nb-1Fe alloy were both determined to be between 823 K and 873 K. The alloy annealed at 823 K exhibits a higher ultimate tensile strengthen and a lower fracture strain than other alloys, due to the residual work hardening, and the coarse and non-uniformly distributed a precipitates. Ti-19Zr-10Nb-1Fe alloys annealed at 873 K and 973 K exhibited superelasticity in tension due to the stress induced martensitic transformation. However, no obvious superelasticity can be observed during the tensile deformation of the alloys annealed at 823 K or 1173 K, implying the suppression of stress-induced martensite transformation by high-density dislocations or increased β grain size, respectively. The alloy annealed at 873 K exhibited a good combination of large elongation of ～24.8%, low Young's modulus of ～58 GPa, high ultimate tensile stress of ～703 MPa and the maximum superelasticity of ～3.7%.
机译：研究了退火温度对Ti-19Zr-10Nb-1Fe合金的组织，力学性能和超弹性的影响。轧制后的合金在823 K和1173 K之间的温度下退火。在823 K退火的合金由主要的β相和部分a相组成。在873 K以上退火的合金中观察到具有纳米级u析出物的等轴β晶粒。确定Ti-19Zr-10Nb-1Fe合金的α/β转变温度和重结晶温度都在823 K和873 K之间。在823 K时，由于残余的加工硬化，析出物粗大且分布不均匀，因此比其他合金具有更高的极限拉伸强度和更低的断裂应变。由于应力诱发的马氏体相变，在873 K和973 K退火的Ti-19Zr-10Nb-1Fe合金在张力方面表现出超弹性。但是，在823 K或1173 K退火的合金的拉伸变形过程中，没有观察到明显的超弹性，这意味着分别通过高密度位错或增加的β晶粒抑制了应力诱发的马氏体相变。在873 K退火的合金表现出良好的组合，其高延伸率约为24.8％，杨氏模量较低，约为58 GPa，极限拉伸应力较高，约为703 MPa，最大超弹性约为3.7％。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号