Linear Friction Welding Performance of Hydrogenated Ti-6Al-4V Alloy

Ren, Rui Ming; Hou, Hong Liang; Liu, Peng Tao; Zhao, Xiu Juan; Zhang, Tian Cang; Chen, Chun Huan

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Paper Title:

Linear Friction Welding Performance of Hydrogenated Ti-6Al-4V Alloy

Periodical	Advanced Materials Research (Volumes 154 - 155)
Main Theme	Materials Processing Technologies
Edited by	Zhengyi Jiang, Xianghua Liu and Jinglong Bu
Pages	23-27
DOI	10.4028/www.scientific.net/AMR.154-155.23
Citation	Peng Tao Liu et al., 2010, Advanced Materials Research, 154-155, 23
Online since	October, 2010
Authors	Peng Tao Liu, Xiu Juan Zhao, Tian Cang Zhang, Hong Liang Hou, Chun Huan Chen, Rui Ming Ren
Keywords	Hydrogenated Ti-6Al-4V Alloy, Linear Friction Welding, Microstructure, Tensile Properties
Price	US$ 28,-

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Abstract

The linear friction welding (LFW) performance of hydrogenated Ti-6Al-4V alloy was investigated. The effects of hydrogen on macro-features and axial shortening as well as microstructure of Ti-6Al-4V alloy joints welded by LFW were analyzed. The mechanical properties of joints after dehydrogenation were also examined by tensile test at room temperature. The results indicated that the hydrogenated Ti-6Al-4V specimens containing 0.3~0.4 wt% hydrogen had a better microstructure and plastic deformation ability, which resulted in the optimum welding performance improvement of LFW. The critical power input of LFW could be lowered by addition of hydrogen to Ti-6Al-4V alloy. The results of tensile test showed that joints which experienced thermohydrogen processing possessed the same tensile strength and plasticity as original joints.