Microstructure of Carbides at Grain Boundaries in Nickel Based Superalloys

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	Microstructure of Carbides at Grain Boundaries in Nickel Based Superalloys
	X. M. Dong; X. L. Zhang; K. Du; Y. Z. Zhou; T. Jin; H. Q. Ye
	2012
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	28 期号:11 页码:1031-1038
摘要	It is well known that carbides at grain boundaries play an important role in affecting mechanical properties of nickel based superalloys. In order to deeply understand the relationship between grain boundary structures and properties, in this work, we have investigated the microstructure of grain boundaries with different misorientation angles in bicrystals of nickel based superalloys. It is found that the bicrystals with smaller misorientation angles contain denser M23C6 but sparse MC particles at grain boundaries, and this kind of bicrystals presents longer stress rupture lives. It was observed that MC carbides were decorated by M23C6 and M6C particles at grain boundaries. The formation of these carbide particles, therefore, is likely due to the local fluctuation of chemical composition around MC carbides. In addition, the orientation relationships between MC carbides and gamma/gamma' matrix were also determined.
部门归属	[dong, xiaoming; du, kui; ye, hengqiang] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;du, k (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;kuidu@imr.ac.cn
关键词	Electron Microscopy Ni Based Superalloys Grain Boundaries Orientation Relationship Primary Mc Carbide Creep-properties Sx-superalloys Decomposition Rupture Rr2072
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/59930
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. M. Dong,X. L. Zhang,K. Du,et al. Microstructure of Carbides at Grain Boundaries in Nickel Based Superalloys[J]. Journal of Materials Science & Technology,2012,28(11):1031-1038.
APA	X. M. Dong,X. L. Zhang,K. Du,Y. Z. Zhou,T. Jin,&H. Q. Ye.(2012).Microstructure of Carbides at Grain Boundaries in Nickel Based Superalloys.Journal of Materials Science & Technology,28(11),1031-1038.
MLA	X. M. Dong,et al."Microstructure of Carbides at Grain Boundaries in Nickel Based Superalloys".Journal of Materials Science & Technology 28.11(2012):1031-1038.