EFFECTS OF SOLUTION TREATMENT ON MICROSTRUCTURE AND WEAR-RESISTANT PROPERTIES OF CoCrW ALLOYS

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	EFFECTS OF SOLUTION TREATMENT ON MICROSTRUCTURE AND WEAR-RESISTANT PROPERTIES OF CoCrW ALLOYS
	He Bo 1; Nie Qingwu 1; Zhang Hongyu 2; Wei Hua 2
通讯作者	Wei Hua(hwei@imr.ac.cn)
	2016-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	52 期号:4 页码:484-490
摘要	CoCrW alloy is a kind of stellite alloy, which has high strength, good wear resistance, and is widely used in aviation industry, nuclear industry and other fields. For a long time, the CoCrW alloy is mainly used as coating to have an effect on wear and the corrosion resistance. With the development of the industry, the conventional cast CoCrW alloy has been widely studied. The mechanical properties of the cast CoCrW alloy can be changed by heat treatment, which is of high hardness and great brittleness. In this work, hardness and wear resistant properties of the CoCrW alloys as-cast and after solution treatment were studied by combining XRD, SEM, EDS, hardness test and wear resistance test, and effects of the solution temperature on the microstructure and wear-resistant properties were also investigated. The results showed that the microstructures of the CoCrW alloys as-cast and after solution treatment were both composed of M23C6, M6C and gamma-Co matrix, but the size, morphology and distribution of carbides occurred in the alloy changed obviously by solution treatment. The dissolution of a large amount of carbides in the alloy after solution treatment was mainly responsible for the decrease in hardness and wear resistance of the alloy compared with that of the as-cast one. With the increase of the solution temperature, the Cr, W and other alloying elements in the carbides were dissolved into the gamma-Co matrix so as to strengthen the matrix resulting in the improvement of the hardness and the associated wear resistance of the alloy. The mechanism that controlling the wear-resistant property of CoCrW alloys as-cast and after solution treatment was the interaction of abrasive wear, adhesive wear and oxidation wear.
关键词	CoCrW alloy solution treatment hardness wear-resistant property
资助者	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51201161] ; Natural Science Foundation of Liaoning Province[2013024011]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000374809600012
出版者	SCIENCE PRESS
引用统计	被引频次：3[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/321006/122096
专题	中国科学院金属研究所
通讯作者	Wei Hua
作者单位	1.Shenyang Aerosp Univ, Sch Mechatron Engn, Shenyang 110136, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	He Bo,Nie Qingwu,Zhang Hongyu,et al. EFFECTS OF SOLUTION TREATMENT ON MICROSTRUCTURE AND WEAR-RESISTANT PROPERTIES OF CoCrW ALLOYS[J]. ACTA METALLURGICA SINICA,2016,52(4):484-490.
APA	He Bo,Nie Qingwu,Zhang Hongyu,&Wei Hua.(2016).EFFECTS OF SOLUTION TREATMENT ON MICROSTRUCTURE AND WEAR-RESISTANT PROPERTIES OF CoCrW ALLOYS.ACTA METALLURGICA SINICA,52(4),484-490.
MLA	He Bo,et al."EFFECTS OF SOLUTION TREATMENT ON MICROSTRUCTURE AND WEAR-RESISTANT PROPERTIES OF CoCrW ALLOYS".ACTA METALLURGICA SINICA 52.4(2016):484-490.