Effect of Mo concentration on creep properties of a single crystal nickel-base superalloy

IMR OpenIR

	Effect of Mo concentration on creep properties of a single crystal nickel-base superalloy; Effect of Mo concentration on creep properties of a single crystal nickel-base superalloy
	J. Zhang; J. G. Li; T. Jin; X. F. Sun; Z. Q. Hu
	2010 ; 2010
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing ; Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093 ; 0921-5093
卷号	527 期号:13-14 页码:3051-3056
摘要	The effect of Mo concentration on creep properties of a single crystal nickel-base superalloy has been studied at 1010 degrees C and 800 degrees C by using three kinds of alloys with 1%, 2% and 4% of Mo (wt.). The creep properties of alloys were measured and microstructure evolution was analyzed. The results showed that after heat treatment, all the three alloys were composed of gamma and gamma' phase without TCP phase precipitation. The increase of Mo concentration from 1 wt.% to 2 wt.% pronouncedly enhanced the creep properties. Compared with 1 wt.% Mo content, 2 wt.% Mo addition can generate denser gamma/gamma' interfacial dislocation networks during high temperature creep test, thus lower minimum creep rate. At medium temperature creep condition, Mo addition enhanced creep properties by decreasing the stacking fault energy. When the Mo content reached to 4%, the over-saturation of Mo content in gamma phase led to the formation of p. phase precipitation which degraded the creep properties at both high and medium temperature creep conditions. (C) 2010 Elsevier B.V. All rights reserved.; The effect of Mo concentration on creep properties of a single crystal nickel-base superalloy has been studied at 1010 degrees C and 800 degrees C by using three kinds of alloys with 1%, 2% and 4% of Mo (wt.). The creep properties of alloys were measured and microstructure evolution was analyzed. The results showed that after heat treatment, all the three alloys were composed of gamma and gamma' phase without TCP phase precipitation. The increase of Mo concentration from 1 wt.% to 2 wt.% pronouncedly enhanced the creep properties. Compared with 1 wt.% Mo content, 2 wt.% Mo addition can generate denser gamma/gamma' interfacial dislocation networks during high temperature creep test, thus lower minimum creep rate. At medium temperature creep condition, Mo addition enhanced creep properties by decreasing the stacking fault energy. When the Mo content reached to 4%, the over-saturation of Mo content in gamma phase led to the formation of p. phase precipitation which degraded the creep properties at both high and medium temperature creep conditions. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[zhang, jian; li, jinguo; jin, tao; sun, xiaofeng; hu, zhuangqi] chinese acad sci, inst met res, shenyang 110016, peoples r china. [zhang, jian] chinese acad sci, grad univ, beijing 100049, peoples r china.;li, jg (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jgli@imr.ac.cn ; [zhang, jian; li, jinguo; jin, tao; sun, xiaofeng; hu, zhuangqi] chinese acad sci, inst met res, shenyang 110016, peoples r china. [zhang, jian] chinese acad sci, grad univ, beijing 100049, peoples r china.;li, jg (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;jgli@imr.ac.cn
关键词	Single Crystal Superalloy Single Crystal Superalloy Mo Mo Creep Creep Dislocation Dislocation Mu Phase Mu Phase Molybdenum Molybdenum Phase Phase Behavior Behavior
URL	查看原文 ; 查看原文
WOS记录号	WOS:000276874700001 ; WOS:000276874700001
引用统计	被引频次：60[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/321006/31703
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Zhang,J. G. Li,T. Jin,et al. Effect of Mo concentration on creep properties of a single crystal nickel-base superalloy, Effect of Mo concentration on creep properties of a single crystal nickel-base superalloy[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing, Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2010, 2010,527, 527(13-14):3051-3056, 3051-3056.
APA	J. Zhang,J. G. Li,T. Jin,X. F. Sun,&Z. Q. Hu.(2010).Effect of Mo concentration on creep properties of a single crystal nickel-base superalloy.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,527(13-14),3051-3056.
MLA	J. Zhang,et al."Effect of Mo concentration on creep properties of a single crystal nickel-base superalloy".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 527.13-14(2010):3051-3056.