| Effect of coating repair on microstructure and mechanical properties of Ni3Al based alloy IC6 |
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| 作者姓名： | 李树索 韩雅芳 肖程波 宋尽霞 李建平 |
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| 作者单位： | 1. Beijing University of Aeronautics and Astronautics，Beijing 100083，China; 2. Beijing Institute of Aeronautical Materials，Beijing 100095，China |
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| 摘 要： | 1 ＩＮＴＲＯＤＵＣＴＩＯＮＮｉ3ＡｌｂａｓｅｄａｌｌｏｙＩＣ6,ｗｈｉｃｈｉｓａｄｉｒｅｃｔｉｏｎａｌｌｙｓｏｌｉｄｉｆｉｅｄｈｉｇｈｔｅｍｐｅｒａｔｕｒｅｓｔｒｕｃｔｕｒａｌｍａｔｅｒｉａｌ,ｈａｓｂｅｅｎｒｅｃｅｎｔｌｙｄｅｖｅｌｏｐｅｄｂｙＢｅｉｊｉｎ
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| 关 键 词： | IC6合金 机械性质 涂层 修复 Ni3Al基合金 显微组织 |
Effect of coating repair on microstructure and mechanical properties of Ni3Al based alloy IC6 |
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| LI Shu-suo,HAN Ya-fang,XIAO Cheng-boSONG Jin-xia,LI Jian-ping.Effect of coating repair on microstructure and mechanical properties of Ni3Al based alloy IC6[J].Transactions of Nonferrous Metals Society of China,2002,12(4):653-655. |
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| Authors: | LI Shu-suo HAN Ya-fang XIAO Cheng-boSONG Jin-xia LI Jian-ping |
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| Abstract: | The effect of coating repair on microstr ucture and mechanical properties of a directionally solidified nickel base alloy IC6 was studied. The experime ntal results show that after coating repair treatment, the substrate/coating interface keeps well, and the combination of coating and substrate is very good , as well as very slight mutual diffusion of alloying elements between substrate and coating occurred. Although coating repair treatment make diffusion time double, only a little amount of Mo diffused into coating, and the elements Cr and Co of NiCoCrAlYHf coating only exist in a thin layer of influence region of the substrate, which has no obvious effect on the microstructure of alloy IC6. Tensile tests at room temperature and stress rupture tests under 1100 ℃, 90 Mpa of the coating-repaired sample were conducted. The results show that the coating repair has no evident effect on mechanical properties. Therefore, it may be considered that when the coating is unexpectedly destroyed, it can be repaired. |
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| Keywords: | nickel aluminides coatings aero engine components |
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