| 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 Author | Wang, Cuiping(wangcp@xmu.edu.cn) |
| 2018-07-01 | |
| Source Publication | METALS
 |
| ISSN | 2075-4701 |
| Volume | 8Issue:7Pages:12 |
| Abstract | Microstructures, 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. |
| Keyword | Cobalt-based superalloys gamma prime microstructure evolution high-temperature mechanical properties |
| Funding Organization | National Key R&D Program of China ; Ministry of Science and Technology of China |
| DOI | 10.3390/met8070563 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key R&D Program of China[2017YFB0702901] ; Ministry of Science and Technology of China[2014DFA53040] |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000445096800093 |
| Publisher | MDPI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/129543 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Cuiping |
| Affiliation | 1.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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