采用近液相线铸造的方法制备出ZL201合金半固态锭坯,并对其进行了触变挤压成形,利用金相显微镜观察r其组织变化,并与常规铸造ZL201合金的组织与挤压成形件的组织进行了对比分析.研究结果表明:(1)半固态合金挤压后组织更细小均匀,消除了宏观偏析、晶内疏松等问题,有利于性能的提高.(2)半固态挤压组织更细小均匀的主要原因是在挤压过程中晶粒的变形量、畸变区域很大,故在动态再结晶的过程中,半固态合金转变的体积分数大于常规铸造合金,所以半同态合金挤压件组织更加细小均匀.
参考文献
| [1] | KIRKWOOD D H;Kapranos P .Semi-solid processing of alloy[J].Metals and Materials,1988,11(02):16-18. |
| [2] | FLEMING M C;Piek R G;Young K P .The theology of a partially solid alloy[J].Metallurgical and Materials Transactions,1972,17(03):1925-1927. |
| [3] | Fleming M C .Behavior of metal alloys in the semi-solid state[J].Metallurgical and Materials Transactions,1991,22B(06):269-271. |
| [4] | CHEN J Y;Fan Z .Modeling of rheological behavior of semi-solid metal slurries (parti)-Theory[J].Materials Science and Technology,2002,18(03):237-239. |
| [5] | KATTAMIS T Z;Poccone T J .Rheology of semi-solid Al -4.5% Cu-1.5% Mg alloy[J].Materials Science and Engineering,1991,131A:265-267. |
| [6] | CHARLES VIVES .Effects of Forced Electromagnetic Vibrations during the Solidification of Aluminum Alloys: Part Ⅰ, Solidification in the Presence of Crossed Alternating Electric Fields and Stationary Magnetic Fields[J].Metallurgical Transactions.B.Process Metallurgy,1996(3):445-455. |
| [7] | FLEMINGS M C.SSM:some thoughts on past milestones and on the path ahead[A].Turin,2000:11-14. |
| [8] | 王平,崔建忠.近液相线法铸造非枝晶A356合金组织与成形性能[J].金属学报,2002(09):952-955. |
| [9] | 王平,郑连辉,刘晓涛,崔建忠.外场作用下ZL201合金近液相线铸造与触变成形[J].东北大学学报（自然科学版）,2007(02):205-208. |
| [10] | 王平,康皓,路贵民,崔建忠.半固态ZL201合金的重熔加热合金组织[J].东北大学学报（自然科学版）,2005(05):437-439. |
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