Simulation of temperature field, flow field and solidification structure for Ag–28Cu–2Ge–0.4Co alloy

ABSTRACT

The temperature field, flow field and solidification structure of Ag–28Cu–2Ge–0.4Co alloy during solidification under water cooling, air cooling and slow cooling conditions were investigated, respectively. The results indicate that the temperature distribution is the most uniform and the solid–liquid phase region is the widest under slow cooling condition. The temperature gradient at the solidification front is the largest under water cooling condition. The solidification rate increases with the distance away from the sidewall under three cooling conditions. Under water-cooled conditions, the liquid flow at the front of the liquidus is much smaller than that in the other two conditions. The ratio of equiaxed crystals and columnar crystals in the solidified structure is different under different cooling conditions.

KEYWORDS:

• 3D-CAFE
• temperature field
• flow field
• solidification structure

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the National Major Science and Technology Projects of China [Project No. 2017YFB0305700], National Natural Science Foundation of China [Project No. U1602271, 51707087 and U1602275], Applied Basic Research Key Project of Yunnan [Project No. 2018ZE011, 2018ZE012, 2018ZE022, 2018ZE026 and 2018ZE020] and Yunnan Province Applied and Basic Research Foundation [Project No. 2018FB088].