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

doi:10.1016/j.jallcom.2020.157236

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	Plastic deformation behavior of Co-8.8Al-9.8W-xTa(x = 0, 2) superalloy at room temperature
	Xu, Yangtao 1,2; Li, Huai 1,2; Wang, Yonghong 1,2; Chang, Xin 1,2; Lv, Xin 1,2; Ma, Tengfei 1,2
刊名	Journal of Alloys and Compounds
	2021-02-15
卷号	854
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
ISSN号	09258388
DOI	10.1016/j.jallcom.2020.157236
英文摘要	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.
语种	英语
出版者	Elsevier Ltd
内容类型	期刊论文
源URL	[http://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
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).