Optimization of mechanical and tribological properties of FCC CrCoNi multi-principal element alloy with Mo addition | |
Department | 先进润滑与防护材料研究发展中心 |
Miao, Junwei1,2; Guo, Tieming1; Ren JF(任俊芳)2; Zhang AJ(张爱军)2; Su B(苏博)2; Meng JH(孟军虎)2; Meng JH(孟军虎) | |
The second department | 固体润滑国家重点实验室 |
2018 | |
Source Publication | Vacuum |
ISSN | 0042-207X |
Volume | 149Pages:324-330 |
Abstract | A new multi-principal element alloy system, CrCoNiMox, is designed by adding Mo in FCC CrCoNi alloy to improve the strength and wear resistance. The addition of Mo causes severe lattice distortion of the alloys and promotes the formation of intermetallic phases. With the increase of Mo content, the hardness and compressive yield strength of the CrCoNiMox alloys increase obviously from 244 HV and 518 MPa to 656 HV and 1973 MPa, respectively, whereas the plasticity decreases because the intermetallic compounds are hard but brittle. As a result of the competition between the solid solution strengthening of Mo and the embrittlement of the intermetallic compounds, the fracture toughness of the alloys firstly increases and then decreases with increasing Mo content. The wear resistance of the alloys is significantly increased with the Mo content and shows a slight increase when x exceeds 0.5, because the wear mechanism of the alloys is changed from abrasive wear to adhesive wear and brittle fracture gradually. This study provides a new insight for the design of high strength and wear resistant alloys for engineering applications. |
Keyword | Multi-principal Element Alloys Solid Solution Strengthening Intermetallic Phases Mechanical Properties Tribological Properties |
Subject Area | 材料科学与物理化学 |
DOI | 10.1016/j.vacuum.2018.01.012 |
Funding Organization | Major Programs of the Chinese Academy of Sciences during the 13th Five-Year Plan Period;the Student Science and Technology Innovation Project of the Lanzhou University of Technology in 2017 (Y8) |
Indexed By | SCI |
Language | 英语 |
Funding Project | 金属基高温润滑材料研究组 |
compositor | 第二作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/23722 |
Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 固体润滑国家重点实验室(LSL) |
Corresponding Author | Guo, Tieming; Meng JH(孟军虎) |
Affiliation | 1.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China |
Recommended Citation GB/T 7714 | Miao, Junwei,Guo, Tieming,Ren JF,et al. Optimization of mechanical and tribological properties of FCC CrCoNi multi-principal element alloy with Mo addition[J]. Vacuum,2018,149:324-330. |
APA | Miao, Junwei.,Guo, Tieming.,Ren JF.,Zhang AJ.,Su B.,...&孟军虎.(2018).Optimization of mechanical and tribological properties of FCC CrCoNi multi-principal element alloy with Mo addition.Vacuum,149,324-330. |
MLA | Miao, Junwei,et al."Optimization of mechanical and tribological properties of FCC CrCoNi multi-principal element alloy with Mo addition".Vacuum 149(2018):324-330. |
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