| Microstructure of TiAl alloy prepared by intense plastic deformation and subsequent reaction sintering |
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| 引用本文： | 李小强,胡连喜,王尔德,贺文雄,刘祖岩. Microstructure of TiAl alloy prepared by intense plastic deformation and subsequent reaction sintering[J]. 中国有色金属学会会刊, 2002, 12(4) |
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| 作者姓名： | 李小强 胡连喜 王尔德 贺文雄 刘祖岩 |
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| 作者单位： | 1. Department of Materials Science and Engineering，Harbin Institute of Technology，Harbin 150001，China; 2. College of Mechanical Engineering，South China University of Technology |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＴｉＡｌａｌｌｏｙｓａｒｅｓｕｉｔａｂｌｅｆｏｒｈｉｇｈ ｔｅｍｐｅｒａｔｕｒｅａｐ ｐｌｉｃａｔｉｏｎｓｉｎａｉｒｃｒａｆｔｇａｓｔｕｒｂｉｎｅｅｎｇｉｎｅｓａｎｄｏｔｈｅｒｔｒａｎｓｐｏｒｔａｔｉｏｎｖｅｈｉｃｌｅ ,ｏｗｉｎｇ
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Microstructure of TiAl alloy prepared by intense plastic deformation and subsequent reaction sintering |
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| LI Xiao qiang,HU Lian xi,WANG Er de,HE Wen xiong,LIU Zu yan. Microstructure of TiAl alloy prepared by intense plastic deformation and subsequent reaction sintering[J]. Transactions of Nonferrous Metals Society of China, 2002, 12(4) |
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| Authors: | LI Xiao qiang HU Lian xi WANG Er de HE Wen xiong LIU Zu yan |
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| Abstract: | TiAl alloy was prepared by intense plastic deformation and subsequent reaction sintering. The effect of plastic deformation on the microstructure of sintered TiAl alloy was investigated using energy dispersive X-ray spectroscopy ( EDS), optical microscopy and transmission electron microscopy (TEM). The results show that the intense plastic deformation of reacting Ti and Al phases caused by high e nergy ball milling refines the as-sintered microstructure. The longer the milling time, the finer the grain size of γ and lamellar (α2+γ) phases. The finer grain size improves the properties of the TiAl alloy. It is also found that the volume fraction of lamellar (α2+γ) phases increases first, then decreases with increas ing milling time. Based on the experimental results theoretical discussion was presented. |
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| Keywords: | TiAl alloy high energy ball milling reaction sintering microstructure |
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