Effect of hydrogenation on the hot deformation of Ti-6Al-4V alloy

被引：0

作者：

Niu, Yong ^{[1
]}

Li, Xiaohua ^{[2
]}

Wang, Yaoqi ^{[2
]}

Hou, Hongliang ^{[2
]}

Li, Miaoquan ^{[1
]}

Lin, Yingying ^{[1
]}

Li, Zhiqiang ^{[2
]}

机构：

[1] Northwestern Polytechnical University, Xi'an 710072, China

[2] Beijing Aeronautical Manufacturing Technology Research Institute, Beijing 100024, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2008年 / 37卷 / 12期

关键词：

Hot working - Strain rate - Hydrogenation - Activation energy - Titanium alloys - Vanadium alloys - Deformation - Ternary alloys;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Hot deformation of hydrogenated Ti-6Al-4V alloy has been carried out with the Hot-simulator of Gleeble-1500D. The microstructures of hydrogenated alloys have been investigated by XRD and OM. Activation energies of the alloys with different hydrogen content have been calculated. The results show that with the increase in hydrogen content, the fraction of β phase increases and the flow stress at high temperature decreases obviously, whose change presents a sunken curve, i.e. after reaching a minimum then increases at a particular processing temperature. The hydrogen content corresponds to the minimum in stress decreases when the temperature is increased. The deformation temperature can decrease 50C or strain rate enhance a order of magnitude in proper hydrogenated at a constant stress. The activation energy decreases with the increase of hydrogen content, and different deformation mechanisms are exhibited.

引用

页码：2089 / 2093