Ti-6Al-4V合金氢致塑性效应与应用

doi:CNKI:11-1929/V.20110310.1711.003

材料工程与机械制造

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Ti-6Al-4V合金氢致塑性效应与应用

王耀奇¹, 侯红亮¹, 孙中刚²

1. 中国航空工业集团公司北京航空制造工程研究所, 北京 100024;
2. 大连理工大学材料科学与工程学院, 辽宁大连 116085

收稿日期:2010-11-18 修回日期:2011-01-14 出版日期:2011-08-25 发布日期:2011-08-19
通讯作者: 王耀奇,Tel: 010-85701254 E-mail: xiaoqigh@sina.com E-mail:xiaoqigh@sina.com
作者简介:王耀奇(1978-) 男,硕士,工程师。主要研究方向:钛合金、铝合金加工及改性。 Tel: 010-85701254 E-mail: xiaoqigh@sina.com; 侯红亮(1963-) 男,博士,研究员。主要研究方向:钛合金、铝合金加工及改性。 E-mail: hou_hl@163.com

Plastic Effect of Hydrogenated Ti-6Al-4V Alloy and Its Application

WANG Yaoqi¹, HOU Hongliang¹, SUN Zhonggang²

1. Beijing Aeronautical Manufacturing Technology Research Institute, Aviation Industry Corporation of China, Beijing 100024, China;
2. Department of Materials Science and Engineering, Dalian University of Technology, Dalian 116085, China

Received:2010-11-18 Revised:2011-01-14 Online:2011-08-25 Published:2011-08-19

摘要/Abstract

摘要： 利用光学显微镜研究了置氢处理后Ti-6Al-4V合金的微观组织,通过X射线衍射分析试验研究了置氢处理过程中的相转变过程;采用室温压缩试验研究了置氢处理后Ti-6Al-4V合金的变形行为,并进行了冷镦试验。结果表明,氢促进了α″马氏体与亚稳β相的形成,亚稳β相的形成与转变是Ti-6Al-4V合金变形性能提高的主要因素;在氢含量为0.60%～0.90%时,与原始合金相比,峰值应力降低60 MPa,压缩极限提高40%以上;氢含量为0.80%时,通过冷镦成型制备了直径为φ10 mm的Ti-6Al-4V合金90°沉头螺钉。

关键词: 钛合金, Ti-6Al-4V合金, 置氢处理, 微观组织, 变形行为, 沉头螺钉

Abstract: The microstructure of hydrogenated Ti-6Al-4V alloy is studied by an optical microscope, and its phase transformations are analyzed during the hydrogenating treatment by X-ray diffraction(XRD). The deformation behavior of the hydrogenated Ti-6Al-4V alloy is investigated through compression tests at room temperature, and jumptests are performed, too. The results show that the presence of hydrogen in the alloy promotes the formation of martensite α″ and metastable phase β, and the formation and transition of metastable phase β is the major factor for the improvement of processability of Ti-6Al-4V alloy. Compared with the as-received alloy, the peak stress of hydrogenated Ti-6Al-4V with 0.60% H to 0.90% H decreases by 60 MPa and its compression limit improves by over 40%. When the hydrogen content reaches 0.80%, 90°sunk screws of diameter φ 10 mm can be prepared from Ti-6Al-4V by alloy jumptests at room temperature.

Key words: Titanium alloys, Ti-6Al-4V alloy, hydrogenating treatment, microstructure, deformation behavior, sunk screw

中图分类号:

王耀奇, 侯红亮, 孙中刚. Ti-6Al-4V合金氢致塑性效应与应用[J]. 航空学报, 2011, 32(8): 1563-1568.

WANG Yaoqi, HOU Hongliang, SUN Zhonggang. Plastic Effect of Hydrogenated Ti-6Al-4V Alloy and Its Application[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2011, 32(8): 1563-1568.

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E-mail：hkxb@buaa.edu.cn

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Ti-6Al-4V合金氢致塑性效应与应用

Plastic Effect of Hydrogenated Ti-6Al-4V Alloy and Its Application

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