Rapid solidification of Cu60Co30Cr10 alloy under different conditions
| Autor: | Chongde Cao, Jian-yuan Wang, Zhanbo Sun, Jin-bo Guo, Xiaojun Bai, Jianbang Zheng, Ruibo Song, Xi-xing Wen, Su-lian Gong |
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| Rok vydání: | 2013 |
| Předmět: |
Coalescence (physics)
Materials science Spinodal decomposition Metallurgy Alloy Metals and Alloys Analytical chemistry Splat quenching engineering.material Geotechnical Engineering and Engineering Geology Condensed Matter Physics Microstructure Phase (matter) Metastability Materials Chemistry engineering Supercooling |
| Zdroj: | Transactions of Nonferrous Metals Society of China. 23:731-734 |
| ISSN: | 1003-6326 |
| DOI: | 10.1016/s1003-6326(13)62522-4 |
| Popis: | Metastable liquid phase separation and rapid solidification in a metastable miscibility gap were investigated on the Cu 60 Co 30 Cr 10 alloy by using the electromagnetic levitation and splat-quenching. It is found that the alloy generally has a microstructure consisting of a (Co,Cr)-rich phase embedded in a Cu-rich matrix, and the morphology and size of the (Co,Cr)-rich phase vary drastically with cooling rate. During the electromagnetic levitation solidification processing the cooling rate is lower, resulting in an obvious coalescence tendency of the (Co,Cr)-rich spheroids. The (Co,Cr)-rich phase shows dendrites and coarse spheroids at lower cooling rates. In the splat quenched samples the (Co,Cr)-rich phase spheres were refined significantly and no dendrites were observed. This is probably due to the higher cooling rate, undercooling and interface tension. |
| Databáze: | OpenAIRE |
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