Relationship between degeneration of M7C3 and precipitation of M23C6 in a cobalt base superalloy

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	Relationship between degeneration of M7C3 and precipitation of M23C6 in a cobalt base superalloy
	W. H. Jiang; X. D. Yao; H. R. Guan; Z. Q. Hu
	1999
发表期刊	Materials Science and Technology
ISSN	0267-0836
卷号	15 期号:5 页码:596-598
摘要	The relationship between degeneration of the primary M7C3 carbide and precipitation of the secondary M23C6 carbide has been investigated in a cobalt base superalloy after 100 h aging at 850 degrees C. The results indicated that the primary M7C3 carbide could not transform in situ into the secondary M23C6 carbide. The M23C6 formed by a direct reaction between chromium and carbon atoms. The dissolution of M7C3 provided the precipitation of M23C6 with essential carbon, which acted as a carbon reservoir. Near M7C3, the chromium content is a controlling factor of M23C6 precipitation while away from it, the carbon content dominated the reaction. The precipitate free zone around M7C3 is attributed to chromium depletion which is inherited from the as cast condition. MST/4174
部门归属	acad sinica, inst met res, dept superalloys, shenyang 110015, peoples r china. shenyang polytech univ, dept met mat engn, shenyang 110023, peoples r china.;jiang, wh (reprint author), acad sinica, inst met res, dept superalloys, shenyang 110015, peoples r china
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WOS记录号	WOS:000080773300018
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37384
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	W. H. Jiang,X. D. Yao,H. R. Guan,et al. Relationship between degeneration of M7C3 and precipitation of M23C6 in a cobalt base superalloy[J]. Materials Science and Technology,1999,15(5):596-598.
APA	W. H. Jiang,X. D. Yao,H. R. Guan,&Z. Q. Hu.(1999).Relationship between degeneration of M7C3 and precipitation of M23C6 in a cobalt base superalloy.Materials Science and Technology,15(5),596-598.
MLA	W. H. Jiang,et al."Relationship between degeneration of M7C3 and precipitation of M23C6 in a cobalt base superalloy".Materials Science and Technology 15.5(1999):596-598.