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Effects of Nb and W Additions on the Microstructures and Mechanical Properties of Novel gamma/gamma' Co-V-Ti-Based Superalloys
Liu, Xingjun1,2,3; Pan, Yunwei1,2; Chen, Yuechao1,2; Han, Jiajia1,2; Yang, Shuiyuan1,2; Ruan, Jingjing1,2; Wang, Cuiping1,2; Yang, Yuansheng4; Li, Yingju4
Corresponding AuthorWang, Cuiping(wangcp@xmu.edu.cn)
2018-07-01
Source PublicationMETALS
ISSN2075-4701
Volume8Issue:7Pages:12
AbstractMicrostructures, elemental partition behavior, phase stabilities and mechanical properties of Nb- and W-containing Co-V-Ti-based superalloys were investigated. Elemental partition coefficients (K-X = C-gamma/C gamma) of Nb and W in Co-V-Ti-based superalloys are 2.07 and 1.10, respectively. The gamma' solvus temperatures are determined as 1023 degrees C, 1055 degrees C and 1035 degrees C in Co-12V-4Ti, Co-10V-4Ti-2Nb and Co-10V-4Ti-2W alloys, which are higher than those of Co-9Al-9W alloy (1000 degrees C). The mass densities of quaternary Co-10V-4Ti-2Nb and Co-10V-4Ti-2W alloys are about 8.31 and 8.50 g.cm(-3), respectively, which are 15% lower than Co-Al-W-based superalloys (9.8 g.cm(-3)). All examined alloys exhibit an anomalous positive dependence on temperature rising from 600 to 750 degrees C. Strengths of all examined alloys are higher than those of MarM509 (traditional Cobalt-based superalloy) and Co-9Al-9W at all temperatures that we investigated. The maximum flow stress of Co-V-Ti-Nb alloy is about 638 MPa at 750 degrees C while that of Co-V-Ti-W alloy is about 588 MPa at 700 degrees C.
KeywordCobalt-based superalloys gamma prime microstructure evolution high-temperature mechanical properties
Funding OrganizationNational Key R&D Program of China ; Ministry of Science and Technology of China
DOI10.3390/met8070563
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YFB0702901] ; Ministry of Science and Technology of China[2014DFA53040]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000445096800093
PublisherMDPI
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129543
Collection中国科学院金属研究所
Corresponding AuthorWang, Cuiping
Affiliation1.Xiamen Univ, Coll Mat, Dept Mat Sci & Engn, Xiamen 361005, Peoples R China
2.Xiamen Univ, Fujian Prov Key Lab Mat Genome, Xiamen 361005, Peoples R China
3.Harbin Inst Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Liu, Xingjun,Pan, Yunwei,Chen, Yuechao,et al. Effects of Nb and W Additions on the Microstructures and Mechanical Properties of Novel gamma/gamma' Co-V-Ti-Based Superalloys[J]. METALS,2018,8(7):12.
APA Liu, Xingjun.,Pan, Yunwei.,Chen, Yuechao.,Han, Jiajia.,Yang, Shuiyuan.,...&Li, Yingju.(2018).Effects of Nb and W Additions on the Microstructures and Mechanical Properties of Novel gamma/gamma' Co-V-Ti-Based Superalloys.METALS,8(7),12.
MLA Liu, Xingjun,et al."Effects of Nb and W Additions on the Microstructures and Mechanical Properties of Novel gamma/gamma' Co-V-Ti-Based Superalloys".METALS 8.7(2018):12.
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