Effect of Solidification Condition and Carbon Content on the Morphology of MC Carbide in Directionally Solidified Nickel-base Superalloys

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	Effect of Solidification Condition and Carbon Content on the Morphology of MC Carbide in Directionally Solidified Nickel-base Superalloys
	X. W.; Wang Li, L.; Dong, J. S.; Lou, L. H.
	2014
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	30 期号:12 页码:1296-1300
摘要	Evolution of the morphology of MC carbides with the change of cooling rate and carbon content in two kinds of nickel-base superalloys, K417G and DD33, has been investigated. The morphology of MC carbides evolves from faceted to script-like with increasing cooling rate. Varying the carbon content from 40 x 10(-6) to 320 x 10(-6), the morphology of carbides changes from blocky, rod-like into script-like. Scanning electron microscopy observation of deep-etched samples indicates that these carbides evolve from octahedral to dendritic and then into well-developed dendrites accordingly in a three-dimensional manner. The morphology evolution is discussed from the viewpoint of the preferential growth orientation of fcc crystals and the carbide growth rate during directional solidification.
部门归属	[li, x. w. ; wang, l. ; dong, j. s. ; lou, l. h.] chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. ; dong, js (reprint author), chinese acad sci, inst met res, superalloys div, shenyang 110016, peoples r china. ; djs@imr.ac.cn
关键词	Carbides Morphology Directional Solidification Three-dimensional Microstructure Nickel-base Superalloys Minor Additions Sx-superalloys Microstructure Mar-m247 Porosity
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73848
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. W.,Wang Li, L.,Dong, J. S.,et al. Effect of Solidification Condition and Carbon Content on the Morphology of MC Carbide in Directionally Solidified Nickel-base Superalloys[J]. Journal of Materials Science & Technology,2014,30(12):1296-1300.
APA	X. W.,Wang Li, L.,Dong, J. S.,&Lou, L. H..(2014).Effect of Solidification Condition and Carbon Content on the Morphology of MC Carbide in Directionally Solidified Nickel-base Superalloys.Journal of Materials Science & Technology,30(12),1296-1300.
MLA	X. W.,et al."Effect of Solidification Condition and Carbon Content on the Morphology of MC Carbide in Directionally Solidified Nickel-base Superalloys".Journal of Materials Science & Technology 30.12(2014):1296-1300.