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EFFECT OF SOLID SOLUTION TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HOT-PRESS CoCrW ALLOYS
You Xiaohong1; Wang Ganggang1; Wang Jun2; Xu Tao2; Zhang Hongyu3; Wei Hua3
Corresponding AuthorWei Hua(hwei@imr.ac.cn)
2016-02-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume52Issue:2Pages:161-167
AbstractCo-based alloy has high strength, good corrosion and wear resistance, and is widely used in aviation industry, nuclear industry. The cast Co-based alloys has high hardness brittleness, but the toughness is low, which limits its wide use. The CoCrW alloy prepared by powder metallurgy process has high toughness, at the same time, the mechanical properties of the CoCrW alloy can be changed by heat treatment. In this work, the effect of solid solution treatment on the microstructure and mechanical properties of the hot pressed alloy was studied by SEM, XRD and TEM, hardness test, room-temperature tensile and wear experiment. The results show that the microstructure of the as-hot pressed and solid solution state CoCrW alloy are both composed of M23C6, M6C, CrCo intermetallic compounds and gamma-Co matrix, the contents of M23C6 and prior particle boundaries decrease remarkably after solution treatment, meanwhile, the toughness and wear resistance of the alloy are improved. With the increase of solid solution temperature and time, the hardness and tensile strength at room temperature of CoCrW alloys increase first and then decrease.
KeywordCoCrW alloy hot pressing microstructure solid solution treatment mechanical property
Funding OrganizationNational Natural Science Foundation of China
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[51201161]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000371849600005
PublisherSCIENCE PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/121771
Collection中国科学院金属研究所
Corresponding AuthorWei Hua
Affiliation1.Taiyuan Univ Sci & Technol, Sch Mat Sci & Engn, Taiyuan 030000, Peoples R China
2.Mil Representat Off Factory, Xian 710077, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
You Xiaohong,Wang Ganggang,Wang Jun,et al. EFFECT OF SOLID SOLUTION TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HOT-PRESS CoCrW ALLOYS[J]. ACTA METALLURGICA SINICA,2016,52(2):161-167.
APA You Xiaohong,Wang Ganggang,Wang Jun,Xu Tao,Zhang Hongyu,&Wei Hua.(2016).EFFECT OF SOLID SOLUTION TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HOT-PRESS CoCrW ALLOYS.ACTA METALLURGICA SINICA,52(2),161-167.
MLA You Xiaohong,et al."EFFECT OF SOLID SOLUTION TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF HOT-PRESS CoCrW ALLOYS".ACTA METALLURGICA SINICA 52.2(2016):161-167.
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