Bibliographic Details
| Title: |
Correlated process of phase separation and microstructure evolution of ternary Co-Cu-Pb alloy. |
| Authors: |
Yan, N.1, Wang, W.1, Luo, S.1, Hu, L.1, Wei, B.1 bbwei@nwpu.edu.cn |
| Source: |
Applied Physics A: Materials Science & Processing. Nov2013, Vol. 113 Issue 3, p763-770. 8p. |
| Subjects: |
Phase separation method (Engineering), Linear free energy relationship, Metal microstructure, Cobalt alloys, Ternary alloys, Containerless processing, Supercooling |
| Abstract: |
The phase separation and rapid solidification of liquid ternary CoCuPb immiscible alloy have been investigated under both bulk undercooling and containerless processing conditions. The undercooled bulk alloy is solidified as a vertical two-layer structure, whereas the containerlessly solidified alloy droplet is characterized by core-shell structures. The dendritic growth velocity of primary α(Co) phase shows a power-law relation to undercooling and achieves a maximum of 1.52 m/s at the undercooling of 112 K. The Pb content is always enriched in Cu-rich zone and depleted in Co-rich zone. Numerical analyses indicate that the Stokes motion, solutal Marangoni convection, thermal Marangoni convection, and interfacial energy play the main roles in the correlated process of macrosegregation evolution and microstructure formation. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
