| Microstructure and corrosion behavior of AlCoCrFeNiSi0.1 high-entropy alloy | |
| Xiang, C.1,2; Zhang, Z. M.2; Fu, H. M.3; Han, E-H2; Zhang, H. F.3; Wang, J. Q.2 | |
| Corresponding Author | Han, E-H(ehhan@imr.ac.cn) |
| 2019-11-01 | |
| Source Publication | INTERMETALLICS
 |
| ISSN | 0966-9795 |
| Volume | 114Pages:10 |
| Abstract | The microstructure and corrosion behavior of AlCoCrFeNiSi0.1 high-entropy alloy are investigated. The alloy was prepared by vacuum arc melting and subsequent injection casting. Two different phases, including one disordered BCC (A2) phase and one ordered BCC (B2) phase, are identified in this alloy. The alloy shows a typical equiaxed dendritic microstructure, both of the dendritic and interdendritic regions have an (Al, Ni)-rich matrix with B2 structure and (Cr, Fe)-rich precipitates with A2 structure. The precipitates present different morphologies in the dendritic and interdendritic regions, whereas the chemical composition and crystal structure are very similar. With regard to the corrosion behavior in deaerated 3.5 wt% NaCl solution, the pits were formed at the dendrites, and the selective dissolution of the dendrites could be mainly ascribed to the lower Cr content and galvanic coupling between the dendrites and the interdendrites. The alloy exhibits an active-passive corrosion behavior in deaerated 0.5 mol/L H2SO4 solution. The preferential dissolution of the A2 phase is more severe than the B2 phase. The correlation between chemical composition, microstructure, and corrosion behavior is well illustrated. |
| Keyword | High-entropy alloy Crystal structure Microstructure Segregation Corrosion Electrochemistry |
| Funding Organization | Key Program of the Chinese Academy of Sciences |
| DOI | 10.1016/j.intermet.2019.106599 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Key Program of the Chinese Academy of Sciences[ZDRW-CN-2017-1] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000495497400005 |
| Publisher | ELSEVIER SCI LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/136899 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Han, E-H |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Liaoning, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Xiang, C.,Zhang, Z. M.,Fu, H. M.,et al. Microstructure and corrosion behavior of AlCoCrFeNiSi0.1 high-entropy alloy[J]. INTERMETALLICS,2019,114:10. |
| APA | Xiang, C.,Zhang, Z. M.,Fu, H. M.,Han, E-H,Zhang, H. F.,&Wang, J. Q..(2019).Microstructure and corrosion behavior of AlCoCrFeNiSi0.1 high-entropy alloy.INTERMETALLICS,114,10. |
| MLA | Xiang, C.,et al."Microstructure and corrosion behavior of AlCoCrFeNiSi0.1 high-entropy alloy".INTERMETALLICS 114(2019):10. |
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