基于双势阱函数和场变量之间存在交互作用,提出了用于描述材料加热过程晶粒演变的自由能表达式,建立了晶粒长大的扩散相场数学模型,并编制了相应的数值模拟软件,对AerMet100钢加热过程中正常和异常晶粒长大进行了数值模拟.结果表明:空间矢量取向数的改变,直接影响晶粒生长过程中的演变倾向;随着空间矢量取向数的减少,晶粒向异常长大演变.
参考文献
| [1] | C.Y. WANG;C. BECKERMANN .Equiaxed Dendritic Solidification with Convection: Part Ⅰ. Multiscale/Multiphase Modeling[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,1996(9):2754-2764. |
| [2] | Steinbach I.;Kauerauf B.;Li Q.;Guo J.;Beckermann C. .Three-dimensional modeling of equiaxed dendritic growth on a mesoscopic scale[J].Acta materialia,1999(3):971-982. |
| [3] | C. Moron;M. Mora;A. Garcia .Computer simulation of grain growth kinetics[J].Journal of Magnetism and Magnetic Materials,2000(0):153-155. |
| [4] | Yu Q;Sven Esche K .Three-dimensional grain growth modeling with a Monte Carlo algorithm[J].Materials Letters,2003,57:4622-4626. |
| [5] | Karma A;Rappel W J .Phase-field method for computationally efficient modeling of solidification with arbitrary interface kinetics[J].Physical Review E,1996,53(04):3017-3020. |
| [6] | Nestler B.;Wheeler AA. .A multi-phase-field model of eutectic and peritectic alloys: numerical simulation of growth structures[J].Physica, D. Nonlinear phenomena,2000(1/2):114-133. |
| [7] | Tonhardt R.;Amberg G. .Phase-field simulation of dendritic growth in a shear flow[J].Journal of Crystal Growth,1998(3/4):406-425. |
| [8] | Tonhardt R.;Amberg G. .Dendritic growth of randomly oriented nuclei in a shear flow[J].Journal of Crystal Growth,2000(1/2):161-187. |
| [9] | Chen L Q;Yang W .Computer simulation of the domain dynamics of a quenched system with a large number of nonconserved order parameters:the grain-growth kinetics[J].Physical Review B:Condensed Matter,1994,50:15752-15756. |
| [10] | Srolovitz D J;Anderson M P.Grain growth in two dimensions[J].Scripta Metllurgica,1983(17):241-246. |
| [11] | 罗伯 D;项金钟;吴兴惠.计算材料学[M].北京:化学工业出版社,2002 |
| [12] | Wheeler A A;Boettinger W J;McFadden G B .Phase-field model of solute trapping during solidification[J].Physical Review E,1993,47(03):1893-1909. |
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