Effect of Hydrogen on Microstructure of Ti-6Al-4V Alloys

被引:2
|
作者
Li Miaoquan [1 ]
Zhang Weifu [1 ]
Zhu Tangkui [1 ]
Hou Hongliang [2 ]
Li Zhiqiang [2 ]
机构
[1] Northwestern Polytech Univ, Xian 710072, Peoples R China
[2] Beijing Aeronaut Mfg Technol Res Inst, Beijing 100024, Peoples R China
基金
中国国家自然科学基金;
关键词
Ti-6Al-4V alloy; hydrogen; delta hydride; transus temperature; TEMPERATURE DEFORMATION-BEHAVIOR;
D O I
暂无
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Hydrogenation of Ti-6A1-4V titanium alloys was carried out in a special furnace through the accumulated flux method, and OM, XRD and TEM techniques were used to investigate the microstructure evolution of the hydrogenated Ti-6A1-4V titanium alloy. The hydrogenation of the Ti-6A1-4V titanium alloy with the hydrogen content of 0.30 wt% makes the alpha phase fraction decrease compared with that of the as-received Ti-6A1-4V titanium alloy, but it makes the beta phase fraction increase. The delta hydride (TiH2 phase) occurs in the hydrogenated Ti-6Al-4V titanium alloy when the hydrogen content is more than 0.3 wt%. The shear deformation is main pattern in the transformation processes from beta-Ti(H) phase to alpha-Ti phase and delta hydride (TiH2 phase). The phase transformation temperature of the hydrogenated Ti-6Al-4V titanium alloy decreases by 180 degrees C compared with that of the as-received Ti-6A1-4V titanium alloy, and it is related to the phase fraction and phase transformation.
引用
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页码:1 / 5
页数:5
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