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	Novel cobalt base superalloy and its high-temperature flow behavior
	Tang Chunfeng ; Pan Feng ; Qu Xuanhui ; Duan Baihua ; Wang Tianjian ; He Xinbo
	2010-05-10 ; 2010-05-10
关键词	cobalt base superalloy microstructure heat treatment hot compression deformation ALLOY NI CR Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering
中文摘要	A novel cobalt base superalloy containing titanium and aluminum was investigated through metallography, tensile test, and high-temperature isothermal compression deformation. The results show that proper content of titanium and aluminum with can improve the strength and ductility of the cobalt base superalloy. The Co-3(Ti,Al) compound with L 12 structure precipitates when the novel superalloy is aged at 800 degrees C for 20 h. The E phase with hcp structure also precipitates when the superalloy is deformed by 28% and then aged at 650 degrees C for 4 h. The E phase can exist at 800 degrees C. ne superalloy has excellent high-temperature mechanical properties. Its maximum flow stress at 850 degrees C is in the range of 360-475 MPa when the strain rate is between 0.0021 and 2.1 s(-1). The flow stress of the superalloy during high-temperature deformation can be described by the Zener-Hollomon parameter with a hot deformation activation energy of 397 kJ.mol(-1).
语种	英语 ; 英语
出版者	NONFERROUS METALS SOC CHINA ; BEIJING ; NO 30 XUEYUAN RD, BEIJING 100083, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/21704]
专题	清华大学
推荐引用方式 GB/T 7714	Tang Chunfeng,Pan Feng,Qu Xuanhui,et al. Novel cobalt base superalloy and its high-temperature flow behavior[J],2010, 2010.
APA	Tang Chunfeng,Pan Feng,Qu Xuanhui,Duan Baihua,Wang Tianjian,&He Xinbo.(2010).Novel cobalt base superalloy and its high-temperature flow behavior..
MLA	Tang Chunfeng,et al."Novel cobalt base superalloy and its high-temperature flow behavior".(2010).

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