Coarsening behavior of gamma ' precipitates and compression deformation mechanism of a novel Co-V-Ta-Ti superalloy

doi:10.1016/j.msea.2020.139455

IMR OpenIR

	Coarsening behavior of gamma ' precipitates and compression deformation mechanism of a novel Co-V-Ta-Ti superalloy
	Qu, Shasha 1,2; Li, Yingju 1; Wang, Cuiping 3,4; Liu, Xingjun 3,4,5,6; Qian, Kun 1,2; Ruan, Jingjing 7; Chen, Yuechao 3,4; Yang, Yuansheng 1
通讯作者	Yang, Yuansheng(ysyang@imr.ac.cn)
	2020-06-10
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	787 页码:9
摘要	The coarsening behavior of gamma' precipitates at different temperatures and the compression deformation mechanism of a novel Co-V-Ta-Ti superalloy are investigated. It is found that the coarsening behavior of the gamma' precipitates follows the classical Lifshitz-Slyozov-Wagner (LSW) model based on measured results of the temporal evolution of the mean radius, volume fraction, and number density of the gamma' precipitates. The coarsening rate constant, K, of the gamma' precipitates is strongly dependent on the aging temperature, and it increases nearly ten times with the aging temperature rising from 800 to 900 degrees C. Within this temperature range, the activation energy for coarsening of the gamma' precipitates is determined to be 230 kJ/mol. This value is close to the activation energy for the diffusion of V in Co, suggesting that the coarsening rate of gamma' precipitates is limited by the diffusion of V element. A lot of slip bands are observed in the alloy after compression deformation, which shows the crystal slip is the primary deformation mechanism for the Co-V-Ta-Ti alloy. It is found that the dislocations bypass the gamma' precipitates below 700 degrees C in the alloy, and pairs of dislocations shear the gamma precipitates with a high density of stacking faults (SFs) above the peak temperature of 700 degrees C.
关键词	Co-V-Ta-Ti alloy Microstructural evolution Coarsening behavior Compression property Deformation mechanism
资助者	National Natural Science Foundation of China ; National Science and Technology Major Project
DOI	10.1016/j.msea.2020.139455
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51831007] ; National Science and Technology Major Project[2017-VI-0003-0073]
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:000541741800006
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：10[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/321006/139546
专题	中国科学院金属研究所
通讯作者	Yang, Yuansheng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Xiamen Univ, Coll Mat, Xiamen 361005, Peoples R China 4.Xiamen Univ, Fujian Prov Key Lab Mat Genome, Xiamen 361005, Peoples R China 5.Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Peoples R China 6.Harbin Inst Technol, Inst Mat Genome & Big Data, Shenzhen 518055, Peoples R China 7.Tohoku Univ, Grad Sch Engn, Dept Met, Sendai, Miyagi 9808579, Japan
推荐引用方式 GB/T 7714	Qu, Shasha,Li, Yingju,Wang, Cuiping,et al. Coarsening behavior of gamma ' precipitates and compression deformation mechanism of a novel Co-V-Ta-Ti superalloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,787:9.
APA	Qu, Shasha.,Li, Yingju.,Wang, Cuiping.,Liu, Xingjun.,Qian, Kun.,...&Yang, Yuansheng.(2020).Coarsening behavior of gamma ' precipitates and compression deformation mechanism of a novel Co-V-Ta-Ti superalloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,787,9.
MLA	Qu, Shasha,et al."Coarsening behavior of gamma ' precipitates and compression deformation mechanism of a novel Co-V-Ta-Ti superalloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 787(2020):9.