采用CAFE模型(Cellular automata finite element method)模拟第二代镍基高温合金CMSX4凝固过程中的晶粒生长,并探讨浇注温度和冷却速度对凝固组织的影响.结果表明:凝固开始时,首先在铸锭底部会形成一层取向随机的细小等轴晶,由于晶粒间的竞争生长,晶粒数目减小,晶粒尺寸增大,〈001〉晶向与热流方向偏离角较大的晶粒逐渐被偏离角较小的晶粒淘汰.浇注温度的提高会使晶粒尺寸变大、晶粒数目变小,而冷却速度的升高却会使晶粒尺寸变小,与理论分析一致.
参考文献
[1] | Ch. -A. GANDIN;Ch. CHARBON;M. RAPPAZ.Stochastic Modelling of Solidification Grain Structures[J].ISIJ International,19956(6):651-657. |
[2] | Mohsen Asle Zaeem;Hebi Yin;Sergio D. Felicelli.Modeling dendritic solidification of Al-3%Cu using cellular automaton and phase-field methods[J].Applied mathematical modelling,20135(5):3495-3503. |
[3] | 张红伟;NAKAJIMA Keiji;王恩刚;赫冀成.Al-Si合金宏观偏析、凝固组织演变的元胞自动机-控制容积法耦合模拟[J].中国有色金属学报,2012(7):1883-1896. |
[4] | 王松;谢明;王塞北;付作鑫;沈月;杜文佳;溥存继.基于CA-FE法的Cu-Cr-Zr-Ag合金凝固组织模拟[J].贵金属,2013(3):50-54. |
[5] | Jing Cailiang;Xu Zhigang;Wang Ying;Wang Wanjun.Simulation on solidification structure of 72A tire cord steel billet using CAFE method[J].中国铸造,2012(01):53-59. |
[6] | 卜晓兵;李落星;张立强;朱必武;王水平.Al-Cu合金凝固微观组织的三维模拟及优化[J].中国有色金属学报,2011(9):2195-2201. |
[7] | 仲红刚;曹欣;陈湘茹;张捷宇;翟启杰.Al-Cu合金水平单向凝固组织预测及实验观察[J].中国有色金属学报,2013(10):2792-2799. |
[8] | 张华;倪红卫;陈光友;成日金;刘吉刚.Al-Si合金凝固组织的三维模拟及预测[J].过程工程学报,2009(z1):92-96. |
[9] | Saluja, R.S.;Ganesh Narayanan, R.;Das, S..Cellular automata finite element (CAFE) model to predict the forming of friction stir welded blanks[J].Computational Materials Science,2012:87-100. |
[10] | 庞瑞朋;王福明;张国庆;李长荣.基于3D-CAFE法对430铁素体不锈钢凝固热参数的研究[J].金属学报,2013(10):1234-1242. |
[11] | 王金龙;赖朝彬;王福明;张炯明;任嵬.CAFE模型机理及应用[J].钢铁研究学报,2009(10):60-63. |
[12] | 王金龙;王福明;李长荣;程慧静.基于CAFE法优化易切削钢9SMn28锰硫比[J].热加工工艺,2009(5):10-13. |
[13] | 王永聚;付建华;闫红红;张家齐.42CrMo钢环件凝固过程与组织的变化数值模拟[J].热加工工艺,2012(19):50-52. |
[14] | YANG Zhi-jun;ZHAO Xiao-hua;KOU Hong-chao;LI Jin-shan;HU Rui;ZHOU Lian.Numerical simulation of temperature distribution and heat transfer during solidification of titanium alloy ingots in vacuum arc remelting process[J].中国有色金属学报(英文版),2010(10):1957-1962. |
[15] | Seong-Moon Seo;In-Soo Kim;Chang-Yong Jo.Grain structure prediction of Ni-base superalloy castings using the cellular automaton-finite element method[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,20070(0):713-716. |
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