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氢对TC4钛合金室温变形行为的影响
引用本文:赵玉贤,孙中刚,陈国清,王耀奇,周文龙,侯红亮.氢对TC4钛合金室温变形行为的影响[J].稀有金属,2009,33(6).
作者姓名:赵玉贤  孙中刚  陈国清  王耀奇  周文龙  侯红亮
作者单位:1. 大连理工大学材料科学与工程学院,辽宁,大连,116023
2. 北京航空制造工程研究所钣金成形研究室,北京,100024
基金项目:教育部科学技术研究项目 
摘    要:应用压缩试验研究了置氢TC4钛合金的室温变形性能; 利用金相显微镜、 X射线衍射仪和扫描电镜等手段分析了置氢后组织演变、相组成和断口特征. 结果表明: 氢处理改善了材料的相组成, 促进了塑性相α″马氏体和亚稳β相的生成, 氢处理后变形极限在低氢时没有较大提高, 随后氢含量超过0.45%后, 塑性大幅度提高, 变形极限较原始提高了90%. 在压缩试验中, 流变应力对氢有较高的敏感性, 随着变形速度和氢含量的增加, 速度引起的加工硬化降低.

关 键 词:钛合金  氢处理  变形

Influence of Hydrogen on Deformation Behavior of TC4 Alloy at Room Temperature
Zhao Yuxian,Sun Zhonggang,Chen Guoqing,Wang Yaoqi,Zhou Wenlong,Hou Hongliang.Influence of Hydrogen on Deformation Behavior of TC4 Alloy at Room Temperature[J].Chinese Journal of Rare Metals,2009,33(6).
Authors:Zhao Yuxian  Sun Zhonggang  Chen Guoqing  Wang Yaoqi  Zhou Wenlong  Hou Hongliang
Abstract:Uniaxial compression tests were utilized to investigate room temperature deformation behavior of the hydrogenated TC4 alloy. Microstructure evolvement, phase composition and fracture characteristics were analyzed by optical microscopy, X-ray diffraction and scanning electron microscope (SEM). The results showed that phase composition was improved, the plastic phases α″ martensite and the metastable phase β formed after hydrogen treatment. When hydrogen concentration exceeded 0.45% (mass fraction), the plasticity increased dramatically, the deformation limits improved 90% compared with the as-received alloy. The flow stress was more sensitive to hydrogen. The deformation hardening caused by the increase of deformation rate decreased with the increase of hydrogen concentration.
Keywords:TC4  titanium alloys  TC4  hydrogen treatment  deforming
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