Microstructure and wear resistance of TIG cladding novel Co-9Al-7.5W superalloy

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	Microstructure and wear resistance of TIG cladding novel Co-9Al-7.5W superalloy
	Xu, Yang-Tao 1,2; Xia, Tian-Dong 1,2; Zhao, Wen-Jun 1,2; Wang, Xiao-Jun 1,2
刊名	Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals
	2013-04-01
卷号	23 期号:4 页码:1019-1026
关键词	Abrasion Aluminum coated steel Aluminum metallography Cladding (coating) Cobalt alloys Cobalt metallography Friction Gas welding Mechanisms Silicon alloys Silicon nitride Stellite Superalloys Ternary alloys Thallium alloys Thallium metallography Wear resistance 304 stainless steel Cladding layer Co-base superalloys Friction and wear Friction coefficients Optimum parameters Precipitation strengthening TIG cladding
ISSN号	10040609
英文摘要	Co-Al-W superalloy is strengthened by a ternary compound γ'-Co3(Al, W) phase with the precipitation strengthening on γ-Co matrix of novel Co-base superalloys. In order to research the welding performance of Co-9Al-7.5W (mole fraction, %) superalloy on the 304 stainless steel by TIG cladding, and the friction coefficient of Co-9Al-7.5W cladding layer superalloy mated with SiN ring was investigated by THT07-135 type friction and wear tester and SEM, which compare with cobalt-based Stellite 6 resistant alloy at the same conditions. The results show that TIG welding Co-9Al-7.5W superalloy optimum parameters are that the welding current is 100 A, welding voltage is 12 V, heat input is 10.3 kJ/cm, the surface hardness of 7.5W cladding layer superalloy reaches HRC53.1. The wear mass loss of 7.5W cladding layer superalloy increases with increasing wear time. The wear mass loss of 7.5W cladding layer is slightly larger than that of Stellite 6 alloy, but the friction coefficient of 7.5W cladding layer is obviously smaller than that of Stellite 6 alloy. The average friction coefficient of 7.5W cladding layer is 0.471. But the friction coefficient of Stellite 6 alloy is 0.531. The wear resistance of 7.5W cladding layer is better than that of Stellite 6 alloy. The 7.5W cladding layer is mainly oxidation and abrasive wear, but Stellite 6 alloy mainly occur delamination and abrasive wear.
语种	中文
出版者	Central South University of Technology
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150391]
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材料科学与工程学院
作者单位	1.Key Laboratory of Non-Ferrous Metal Alloys and Processing, Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, China 2.State Key Laboratory of Gansu Advanced Non-Ferrous Metal Materials, Lanzhou University of Technology, Lanzhou 730050, China;
推荐引用方式 GB/T 7714	Xu, Yang-Tao,Xia, Tian-Dong,Zhao, Wen-Jun,et al. Microstructure and wear resistance of TIG cladding novel Co-9Al-7.5W superalloy[J]. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,2013,23(4):1019-1026.
APA	Xu, Yang-Tao,Xia, Tian-Dong,Zhao, Wen-Jun,&Wang, Xiao-Jun.(2013).Microstructure and wear resistance of TIG cladding novel Co-9Al-7.5W superalloy.Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals,23(4),1019-1026.
MLA	Xu, Yang-Tao,et al."Microstructure and wear resistance of TIG cladding novel Co-9Al-7.5W superalloy".Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals 23.4(2013):1019-1026.