The effect of Co on the microstructure and stress rupture properties of a single crystal superalloy

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	The effect of Co on the microstructure and stress rupture properties of a single crystal superalloy
	J. L.; Zhang Liu, J.; Meng, J.; Jia, Y. X.; Jin, T.
	2014
发表期刊	Materials Research Innovations
ISSN	1432-8917
卷号	18 页码:414-420
摘要	The influence of cobalt (Co) on the as-cast microstructure of an Ni-based single crystal superalloy and its chemical segregation, incipient melting temperature and stress rupture properties was investigated. The results show that the dendrite arm spacing in the alloy did not vary with the addition of Co. The gamma' size in the as-cast microstructure decreased with increasing Co content. The segregation ratio of the gamma'-forming elements titanium (Ti) and tantalum (Ta) became higher in alloys with high Co content (5%, 10%), while the segregation ratio of the gamma-forming elements chromium (Cr) and molybdenum (Mo) first increased then decreased with increasing Co content, attaining the minimum around 10% Co. The incipient melt temperature decreased with increasing Co content. The stress rupture life under 1010 degrees C/248 MPa increased with the increasing of Co content up to 10%, but decreased at 15% Co. The related mechanisms are also discussed in this paper.
部门归属	[liu, j. l. ; meng, j. ; jia, y. x. ; jin, t.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [zhang, j.] northwestern polytech univ, natl key lab solidificat tech, xian 710072, peoples r china. ; liu, jl (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; jlliu@imr.ac.cn
关键词	Co Single Crystal Superalloy Dendrite Chemical Segregation Stress Rupture Nickel-base Superalloy Cobalt
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73863
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. L.,Zhang Liu, J.,Meng, J.,et al. The effect of Co on the microstructure and stress rupture properties of a single crystal superalloy[J]. Materials Research Innovations,2014,18:414-420.
APA	J. L.,Zhang Liu, J.,Meng, J.,Jia, Y. X.,&Jin, T..(2014).The effect of Co on the microstructure and stress rupture properties of a single crystal superalloy.Materials Research Innovations,18,414-420.
MLA	J. L.,et al."The effect of Co on the microstructure and stress rupture properties of a single crystal superalloy".Materials Research Innovations 18(2014):414-420.