采用熔融玻璃净化配合循环过热的净化技术,对Cu98Co2合金进行了系统的深过冷实验.分别采用空冷与快淬两种冷却方法,在一定过冷度和冷却速率相结合下制备出单相固溶体探讨了过冷度及冷却速率对凝固组织的影响.实验结果表明,随过冷度提高凝固组织呈现粗大树枝晶?细小粒状晶?定向细枝晶?粗大粒状晶的演化趋势,基于枝晶生长模型,解释了上述凝固组织演化规律.在大过冷度下,由于该合金具有高层错能和高形核率,再结晶和晶粒长大迅速发生,凝固组织为晶界平直的粗大等轴晶.
参考文献
| [1] | Powell L F G;Hogan L M .[J].Transactions of the Metallurgical Society of AIME,1968,242(02):2133. |
| [2] | Kojiro F;Kobayashi;Paul H S .[J].Journal of Materials Science,1988,23:2157. |
| [3] | Correia J B;Davies H A;Sellars C M et al.[J].Materials Science and Engineering,1991,A133:265. |
| [4] | Patel A N;Dianmon S .[J].Materials Science and Engineering,1988,98:329. |
| [5] | 坚增运;惠增哲;常芳娥 et al.[J].Progress in Natural Science (自然科学进展),2000,10(03):260. |
| [6] | Perovic A;Purdy G R .[J].Acta Metallurgica,1980,29:55. |
| [7] | Lipton J;Kurz W;Trivedi R .[J].ACTA METALLURGICA,1987,35(04):957. |
| [8] | Boettinger W J;Coriell S R;Trivedi R.[A].Annapolis:Claitor's Law Books and Publishing Division,1988:13. |
| [9] | 蒋冰轮;李双明;刘林 et al.[J].Rare Metal Materials and Engineering (稀有金属材料与工程),2006,35(11):35. |
| [10] | Cao Chongde;Li Xiaoyu;Wei Bingbo .Peritectic solidification under high undercooling conditions[J].Chinese science bulletin,1999(14):1338-1343. |
| [11] | Brandees E A;Brook G B.Smithells Metals Reference Book[M].London:butterworth,2008:14. |
| [12] | Li JF.;Lu YL.;Yang GC.;Zhou YH.;Liu YC. .Structural evolution of undercooled Ni-Cu alloys[J].Journal of Crystal Growth,1998(3/4):462-470. |
| [13] | Liu F;Yang G C;Guo X F .[J].Materials Science and Engineering,2001,A311:54. |
| [14] | 刘宁,杨根仓,陈豫增,周尧和.深过冷Fe-30%Co合金的组织演化[J].自然科学进展,2006(01):120-123. |
| [15] | 陈豫增 .[D].西安:西北工业大学,2005. |
| [16] | Aziz M J .[J].Journal of Applied Physics,1982,53(02):1158. |
| [17] | Herlach D M;Gillessen F;Volkmann T et al.[J].Physical Review B:Condensed Matter,1992,46:5203. |
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