Influence of pre-compression on microstructure and creep characteristic of a single crystal nickel-base superalloy

doi:10.1016/j.msea.2005.11.028

IMR OpenIR

	Influence of pre-compression on microstructure and creep characteristic of a single crystal nickel-base superalloy
	Shui, L ; Tian, SG ; Jin, T ; Hu, ZQ
通讯作者	Shui, L(dcbsy@yahoo.com.cn)
	2006-02-25
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	418 期号:1-2 页码:229-235
摘要	The P-type gamma' rafted structure of a nickel-base single crystal superalloy with [001] orientation is formed by means of the pre-compressive stress treatment. An investigation has been made to detect the microstructure evolution and creep features of a single crystal nickel-base superalloy by means of the measurement of creep curves and SEM observation. Results show that creep resistance of alloy with the P-type structure exhibits a marked sensitivity of the applied stress and temperature. When the temperature is lower than 1000 degrees C under the applied stress of 200MPa, compared with the alloy with the cuboidal gamma' phase, the P-type rafted structure alloy possesses both a lower minimum creep rate and longer rupture lifetime. When the applied temperature is higher and the applied stress is larger, the properties of the alloys are worsened. This indicates that the P-type rafted structure is beneficial to improving creep resistance of the alloy under the conditions of lower temperature and stress. Compared with the cuboidal gamma' phase alloy, the microstructure evolution of the P-type structure alloy occurs in the steady state of tensile creep. The P-type gamma' rafted structure in the alloy is gradually broken up, and twisted along the (110) orientation as creep goes on. After crept up to fracture, the twisted gamma' phase is coarsened, and transformed into the microstructure that the rafted gamma' phase is rearranged along the direction roughly perpendicular to the applied stress axis. (c) 2005 Elsevier B.V. All rights reserved.
关键词	single crystal nickel-base superalloy pre-compressive stress treatment P-type gamma ' structure tensile creep microstructure evolution
DOI	10.1016/j.msea.2005.11.028
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000235769400029
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：38[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/321006/87821
专题	中国科学院金属研究所
通讯作者	Shui, L
作者单位	1.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110023, Peoples R China 2.Chinese Acad Sci, Met Res Inst, Shenyang 110016, Peoples R China 3.Shenyang Inst Technol, Sch Mat Sci & Engn, Shenyang 110168, Peoples R China
推荐引用方式 GB/T 7714	Shui, L,Tian, SG,Jin, T,et al. Influence of pre-compression on microstructure and creep characteristic of a single crystal nickel-base superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2006,418(1-2):229-235.
APA	Shui, L,Tian, SG,Jin, T,&Hu, ZQ.(2006).Influence of pre-compression on microstructure and creep characteristic of a single crystal nickel-base superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,418(1-2),229-235.
MLA	Shui, L,et al."Influence of pre-compression on microstructure and creep characteristic of a single crystal nickel-base superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 418.1-2(2006):229-235.