• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2001 TMS Annual Meeting on Structural Biomaterials for the 21st Century, Feb 11-12, 2001, New Orleans, LA >THERMOMECHANICAL ANALYSIS OF Ti40Ta AND Ti50Ta ALLOYS
【24h】

THERMOMECHANICAL ANALYSIS OF Ti40Ta AND Ti50Ta ALLOYS

机译：Ti40Ta和Ti50Ta合金的热力学分析

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

Currently, titanium-tantalum is being studied as an alternative to the popular biomaterial Ti6A14V which has demonstrated possible toxic metal ion release. Preliminary studies have shown Ti40Ta and Ti50Ta to exhibit high strengths and excellent corrosion resistance when subjected to various heat treatments. Ti50Ta aged at 400℃ for 50 hours and at 500°for 50 hours exhibits a tightly woven tweed structure as seen through transmission electron microscopy. The second phase (hcpα) particles, exhibiting a short needle-like morphology, have aligned in the tweed structure resulting in an increase in hardness. The goal of this research is to find a similar optimum heat treatment for the Ti40Ta samples which had not shown an increase in hardness during preliminary testing. Aging treatments at 400℃ were performed at 20, 30, 40, 50, and 100 hours. Microstructural analysis conducted through optical and transmission electron microscopy shows a martensitic transformation as a result of longer aging times. At lower aging times, the martensite exhibited a needle-like structure. At longer aging times, the needles increased in size and density and evolved into a more plate-like formation. The plates increased in size and width with increasing aging times. After the tensile strength reached a minimum for the 30 hour treatment, it increased for the 50 and 100 hour treatments.
机译：目前，正在研究钛-钽作为流行生物材料Ti6A14V的替代品，后者已证明可能释放有毒金属离子。初步研究表明，Ti40Ta和Ti50Ta在经受各种热处理后表现出高强度和出色的耐腐蚀性。通过透射电镜观察，Ti50Ta在400℃下老化50小时和在500°下老化50小时显示出紧密编织的花呢结构。呈现出短针状形态的第二相（hcpα）颗粒在花呢结构中排列，导致硬度增加。这项研究的目的是为Ti40Ta样品找到类似的最佳热处理方法，该方法在初步测试中并未显示出硬度的增加。在20、30、40、50和100小时进行400℃的时效处理。通过光学和透射电子显微镜进行的显微组织分析显示，由于老化时间延长，马氏体转变。在较低的时效时间下，马氏体表现出针状结构。在较长的老化时间下，针头的大小和密度增加，并演变成更像板的形式。板的尺寸和宽度随着老化时间的增加而增加。在30小时处理的抗拉强度达到最小值之后，在50小时和100小时处理中抗拉强度增加。

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