对搅拌铸造法制备SiC颗粒(SiCp)增强Al-7.0%Si(质量分数)复合材料的微观组织形成过程进行了模拟研究,建立了常规凝固条件下相应的宏观传热、等轴枝晶形核、生长以及颗粒推移的三维计算模型,采用一种改进的CA(cellular automaton)方法与有限差分法耦合进行数值计算,研究了不同颗粒体积分数对复合材料宏观传热、微观组织以及颗粒分布的影响.为了验证模拟结果,浇注了阶梯形金属型和砂型试样.结果表明,模拟得到的复合材料颗粒分布及微观组织与实验结果吻合良好.随着颗粒体积分数的增加,凝固时间逐渐缩短,基体晶粒逐渐细化,颗粒分布趋向均匀.
参考文献
| [1] | Boselli J,Gregson P J,Sinclair I.Mater Sci Eng,2004;A379:72 |
| [2] | Jung C K,Jung S W,Nam H W,Han K S.J Compos Mater,2003; 37:503 |
| [3] | Wang C Y,Beckermann C.Metall Mater Trans,1996;27A:2754 |
| [4] | Feller R J,Beckermann C.Metall Mater Trans,1997; 28B:1165 |
| [5] | Kim J K,Rohatgi P K.Acta Mater,1998; 46:1115 |
| [6] | Juretzko F R,Dhindaw B K,Stefanescu D M,Sen S,Curreri P A.Metall Mater Trans,1998; 29A:1691 |
| [7] | Catalina A V,Mukherjee S,Stefanescu D M.Metall Mater Trans,2000; 31A:2559 |
| [8] | Rollett A D,Srolovitz D J,Anderson M P,Doherty R D.Acta Metall Mater,1992; 40:3475 |
| [9] | Shelton R,Dunand D C.Acta Mater,1996; 44:4571 |
| [10] | Song X Y,Gu N J,Liu G Q,Wang B Q.Acta Metall Sin,2000; 36:592 (宋晓艳,谷南驹,刘国权,王宝奇.金属学报,2000;36:592) |
| [11] | Braszczynski J,Zyska A.Mater Sci Eng,2000; A278:195 |
| [12] | Xiong S M,Xu Q Y,Kang J W.Casting Process Simulation and Modeling.Beijing:China Machine Press,2004:1 (熊守美,许庆彦,康进武.铸造过程模拟仿真技术.北京:机械工业出版社,2004:1) |
| [13] | Kim J K,Rohatgi P K.Metall Mater Trans,2000; 31A:1295 |
| [14] | Rohatgi P K,Ray S,Asthana R,Narendranath C S.Mater Sci Eng,1993; A162:163 |
| [15] | Porter D A,Easterling K E.Phase Transformation in Metals and Alloys.New York:Van Nostrand Reinhold Co.Ltd.,1981:193 |
| [16] | Xu Q Y,Feng W M,Liu B C,Xiong S M.Acta Metall Sin,2002; 38:799 (许庆彦,冯伟明,柳百成,熊守美.金属学报,2002;38:799) |
| [17] | Feng W M,Xu Q Y,Liu B C.ISIJ Int,2002; 42:702 |
| [18] | Garvin J W,Udaykumar H S.J Cryst Growth,2003; 252:451 |
| [19] | Mortensen A,Jin I.Int Mater Rev,1992; 37:101 |
| [20] | Rohatgi P K,Asthana R,Das S.Int Metall Rev,1986; 31:115 |
| [21] | Wu Y,Liu H,Lavernia E J.Acta Metall Mater,1994; 42:825 |
| [22] | Zubko A M,Lobanov V G,Nikonova V V.Sov Phys Crystallogr,1973; 18:239 |
| [23] | Surrappa M K,Rohatgi P K.J Mater Sci Lett,1981; 16:562 |
| [24] | Stefanescu D M,Dhindaw B K,Kacar S A,Moitra A.Metall Trans,1988; 19A:2847 |
| [25] | Kim J K,Rohatgi P K.Mater Sci Eng,1998; A244:168 |
| [26] | Feng W M.Master Thesis.Tsinghua University,Beijing,2002:66 (冯伟明.清华大学硕士学位论文,北京,2002:66) |
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