Phase-field simulations of solidification of Al-Cu binary alloys^①

来源期刊：中国有色金属学报(英文版)2004年第2期

论文作者：龙文元 蔡启舟 陈立亮 魏伯康

文章页码：291 - 296

Key words：Al-Cu alloy; phase-field model; dendrite growth; solute profile; temperature profile

Abstract: The dendrite growth process during the solidification of the Al-4.5%Cu binary alloy was simulated using the phase-field model, proposed by Kim et al. Solute diffusion equation and heat transfer equation were solved simultaneously. The effects of the noise on the dendrite growth, solute and temperature profile in the undercooled alloy melt were investigated. The results indicate that the noise can trigger the growth of the secondary arms, and increase the highest temperature and solute concentration, but not influence the tip operating state. The solute and temperature gradients in the tip are the highest.