Effect of solid solution heat treatment duration on microstructure evolution and the high temperature and low stress creep properties of a low-cost fourth-generation single crystal superalloy

doi:10.1016/j.matchar.2024.114137

IMR OpenIR

	Effect of solid solution heat treatment duration on microstructure evolution and the high temperature and low stress creep properties of a low-cost fourth-generation single crystal superalloy
	Liang, Z. Y.1,2; Wang, X. G.1; Tan, Z. H.1; Jafri, S. M. Abbas 1; Tao, X. P.1; Yang, Y. H.1; Liu, J. D.1; Liu, J. L.1; Zhang, C. H.2; Zhang, S.2; Li, J. G.1; Zhou, Y. Z.1; Sun, X. F.1
通讯作者	Wang, X. G.(xgwang11b@imr.ac.cn) ; Zhang, C. H.(zhangch5858@126.com)
	2024-09-01
发表期刊	MATERIALS CHARACTERIZATION
ISSN	1044-5803
卷号	215 页码:15
摘要	Low-cost Ni-based single crystal superalloy with high performance attracted much attention to the researchers in recent years. A Ru-free low-cost fourth-generation single crystal superalloy was designed in this study, which was rarely reported previously. This study mainly focused on the effect of solid solution heat treatment duration on the microstructure evolution and high temperature and low stress creep properties on the experimental superalloy. By the metallographic method, it was revealed that the dendritic segregation was gradually eliminated with the increasing solid solution heat treatment duration. Segregation of Al and Ta were well homogenized as well as W. Segregation of Re could still be observed after 32 h solid solution heat treatment. Quantity and fraction of pores increased, which has a significant influence on the creep properties. Compositional variation between dendritic and inter-dendritic region was the main factor that caused the qualitative difference in the size and volume fraction of the gamma' phase. Gap of the gamma' size and volume fraction between dendritic cores and interdendritic region after solid solution heat treatment became minor. Homogeneous dislocation networks formed during the creep test and the ruptured dislocation networks of the specimen subjected to 32 h solid solution heat treatment were found. In the tertiary stage of the creep test, the primary creep deformation mechanism is the super-dislocations with Burgers vector of a < 010 > shearing the rafted gamma' phases. The specimen subjected to 16 h solid solution heat treatment has the optimal creep performance, followed by those subjected to 32 h and 8 h, respectively.
关键词	Low-cost fourth -generation Ni-based single crystal superalloy Solid solution heat treatment Microstructure evolution Creep properties
资助者	National Key Research and Development Program of China ; National Science and Technology Major Project ; Excellent Youth Foundation of Liaoning Province ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang ; Youth Innovation Promotion Association, Chinese Academy of Sciences
DOI	10.1016/j.matchar.2024.114137
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700704] ; National Science and Technology Major Project[2017-VI-0002-0072] ; Excellent Youth Foundation of Liaoning Province[2021-YQ-02] ; Middle-aged and Youth Talents in Scientific and Technological Innovation Project of Shenyang[RC220440] ; Youth Innovation Promotion Association, Chinese Academy of Sciences
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
WOS记录号	WOS:001266530700001
出版者	ELSEVIER SCIENCE INC
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/188010
专题	中国科学院金属研究所
通讯作者	Wang, X. G.; Zhang, C. H.
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Shenyang Univ Technol, Sch Mat Sci & Engn, Shenyang 110870, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liang, Z. Y.,Wang, X. G.,Tan, Z. H.,et al. Effect of solid solution heat treatment duration on microstructure evolution and the high temperature and low stress creep properties of a low-cost fourth-generation single crystal superalloy[J]. MATERIALS CHARACTERIZATION,2024,215:15.
APA	Liang, Z. Y..,Wang, X. G..,Tan, Z. H..,Jafri, S. M. Abbas.,Tao, X. P..,...&Sun, X. F..(2024).Effect of solid solution heat treatment duration on microstructure evolution and the high temperature and low stress creep properties of a low-cost fourth-generation single crystal superalloy.MATERIALS CHARACTERIZATION,215,15.
MLA	Liang, Z. Y.,et al."Effect of solid solution heat treatment duration on microstructure evolution and the high temperature and low stress creep properties of a low-cost fourth-generation single crystal superalloy".MATERIALS CHARACTERIZATION 215(2024):15.