Plastic deformation behavior of Co-8.8Al-9.8W-xTa(x = 0, 2) superalloy at room temperature

doi:10.1016/j.jallcom.2020.157236

	Plastic deformation behavior of Co-8.8Al-9.8W-xTa(x = 0, 2) superalloy at room temperature
	Xu, Yangtao1,2 ; Li, Huai 1,2; Wang, Yonghong 1,2; Chang, Xin 1,2; Lv, Xin 1,2; Ma, Tengfei 1,2
	2021-02-15
发表期刊	Journal of Alloys and Compounds
ISSN	09258388
卷号	854
摘要	To investigate the effect of tantalum on plastic deformation behavior of Co-8.8Al-9.8W-xTa (x = 0 and 2 at. %) superalloy at room temperature, compressive tests were adopted with constant strain rate. It is interesting that stacking faults occur in γ channels in initial microstructure of both alloys. Deformation substructures were selected from samples after 5% and 10% strains, and determined by transmission electron microscope to study their evolution. Dislocations preferentially nucleated in the γ channels, then bypassed or sheared into γ′ precipitates during deformation. With the shearing of LPDs, stacking faults orderly aligned in the γ/γ′ coherent microstructure and passed through γ channels and adjacent γ′ particles. Both alloys failed by brittle fracture with mixed fractures. © 2020 Elsevier B.V.
关键词	Aluminum alloys Aluminum metallography Cobalt alloys Microstructure Plastic deformation Stacking faults Strain rate Superalloys Tantalum alloys Tantalum metallography Transmission electron microscopy Tungsten alloys Tungsten metallography Compressive tests Constant strain rate Deformation substructures Initial microstructures Mixed fractures Plastic deformation behavior
DOI	10.1016/j.jallcom.2020.157236
收录类别	EI
语种	英语
出版者	Elsevier Ltd
EI入藏号	20204009266047
EI主题词	Cobalt metallography
EI分类号	531 Metallurgy and Metallography - 531.2 Metallography - 541.1 Aluminum - 541.2 Aluminum Alloys - 543.4 Tantalum and Alloys - 543.5 Tungsten and Alloys - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 933.1.1 Crystal Lattice - 951 Materials Science
来源库	Compendex
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/147197
专题	省部共建有色金属先进加工与再利用国家重点实验室
作者单位	1.State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China; 2.School of Materials Science and Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
第一作者单位	兰州理工大学; 材料科学与工程学院
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Xu, Yangtao,Li, Huai,Wang, Yonghong,et al. Plastic deformation behavior of Co-8.8Al-9.8W-xTa(x = 0, 2) superalloy at room temperature[J]. Journal of Alloys and Compounds,2021,854.
APA	Xu, Yangtao,Li, Huai,Wang, Yonghong,Chang, Xin,Lv, Xin,&Ma, Tengfei.(2021).Plastic deformation behavior of Co-8.8Al-9.8W-xTa(x = 0, 2) superalloy at room temperature.Journal of Alloys and Compounds,854.
MLA	Xu, Yangtao,et al."Plastic deformation behavior of Co-8.8Al-9.8W-xTa(x = 0, 2) superalloy at room temperature".Journal of Alloys and Compounds 854(2021).