Numerical simulation on rapid melting and nonequilibrium solidification of pure metals and binary alloys

来源期刊：中国有色金属学报(英文版)2002年第6期

论文作者：惠希东 陈国良 杨院生 胡壮麒

文章页码：1076 - 1080

Key words：rapid melting; nonequilibrium solidification; pulsed laser processing; heat and mass transfer; growth kinetics

Abstract: A heat and mass transfer modelling containing phase transformation dynamics is made for pure metals and binary alloys under pulsed laser processing. The nonequilibrium effects of processing parameters and physical properties are evaluated on the melting and solidification of pure metals (Al, Cu, Fe and Ni) and Al-Cu alloys. It is shown that the energy intensity of laser beam and physical properties of metals and the solute concentration of alloys have important effect on the interface temperature, melting and solidification velocity, melting depth and non-equilibrium partition coefficient. This situation is resulted from the interaction of heat transfer, redistribution of solute, solute trapping and growth kinetics.