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首页> 外文会议>International Conference on Proceeding amp; Manufacturing of Advanced Materials; 20060704-08; Vancouver(CA) >The Effect of Oxygen on Heat Treatment Behavior of Titanium-50massTantalum-5massZirconium Alloy
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The Effect of Oxygen on Heat Treatment Behavior of Titanium-50massTantalum-5massZirconium Alloy

机译：氧对50质量％钽-5质量％锆钛合金热处理行为的影响

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摘要

To develop new shape memory and super-elastic alloys for medical applications, titanium alloys using non-toxic metallic elements, such as Ta and Nb, are being actively investigated. In this study, aimed at developing new shape memory Ti alloys, we investigate the effect of oxygen, a powerful alpha stabilizing interstitial element, on the heat treatment behavior of Ti-50mass%Ta-5mass%Zr through electrical resistivity and Vickers hardness measurements and shape-recovery tests. Ti-50Ta-5Zr-0.14Ox and 0.33Ox alloys, and the β and α" bi-phase was confirmed by XRD. Only the p phase was identified in the Ti-50Ta-5Zr-0.62Ox alloy. Upon isochronal heat treatment, the resistivity at LN and resistivity ratio of Zr-0.33 and 0.62Ox alloys decreased up to around 523 K. In the 5Zr-0.62Ox alloy, orthorhombic martensite and the α" and β phases were identified in the specimens heat-treated at 473 and 523 K. The decreases in resistivity at liquid nitrogen temperature and resistivity ratio are due to the formation of α" during isochronal heat treatment. The formation of α" was confirmed by X-ray diffraction in the 5Zr-0.62Ox alloy. The shape memory effect was observed in 5Zr-0.14 and 0.33Ox alloys and the shape recovery ratio of both alloys was about 40% at 673 K.
机译：为了开发用于医学应用的新型形状记忆和超弹性合金，正在积极研究使用Ta和Nb等无毒金属元素的钛合金。在这项研究中，为了开发新型的形状记忆Ti合金，我们通过电阻率和维氏硬度测量方法研究了氧（一种强大的α稳定间隙元素）对Ti-50mass％Ta-5mass％Zr热处理行为的影响，以及形状恢复测试。 Ti-50Ta-5Zr-0.14Ox和0.33Ox合金，并通过XRD证实了β和α“双相。在Ti-50Ta-5Zr-0.62Ox合金中仅鉴定出p相。 ZR-0.33和0.62Ox合金在LN时的电阻率和电阻率比降低到523 K左右。在5Zr-0.62Ox合金中，在473和110℃热处理的样品中鉴定出正交晶马氏体以及α“和β相。 523 K.液氮温度下电阻率和电阻率比的降低是由于在等时热处理过程中形成了α“。通过X射线衍射在5Zr-0.62Ox合金中证实了α”的形成。在5Zr-0.14和0.33Ox合金中观察到形状记忆效应，并且两种合金在673 K下的形状恢复率约为40％。

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