ZL201铝合金半固态流变压铸组织与性能  

Microstructure and properties of semi-solid rheo-diecasting ZL201 aluminum alloy

作　　者：史立峰[1] 王平[2] 崔建忠[2] 

机构地区：[1]辽宁装备制造职业技术学院塑性成形系,辽宁沈阳110161 [2]东北大学材料电磁过程研究教育部重点实验室,辽宁沈阳110004

出　　处：《轻合金加工技术》2012年第5期15-18,共4页Light Alloy Fabrication Technology

基　　金：辽宁省自然科学基金资助项目(20082036)

摘　　要：研究了ZL201铝合金半固态流变压铸组织与性能,包括半固态浆料的制备、压铸成形和固溶、时效处理。结果表明:在ZL201铝合金液相线温度附近施加交变电磁场,能够获得均匀、细小、近球形非枝晶组织的半固态浆料;半固态浆料经压铸成形后,零件具有等轴或蔷薇状晶粒组织;经T5热处理后,ZL201铝合金的抗拉强度为253N/mm2,伸长率为7%。流变压铸件的组织和性能优于半固态触变压铸件的。The microstructures and properties of rheo-diecasting ZL201 aluminum alloy have been investigated. The preparation of semi-solid metal, rheo-diecasting, solid solution and aging treatment have been investigated as well. The results show that the semi-solid metal with uniform, fine, near-spherical microstructures and non-dendrite crystal can be obtained while the alternate electromagnetic field exerts on nearby liquidus temperature line; the die cast products prepared by semi-solid metal possess isometric crystal or rosette crystal struc- ture; the tensile strength of ZL201 aluminum alloy can be 253 N/ram2, elongation can be 7 % after T5 heat treatment ; the microstructures and mechanical properties of rheo-diecasting parts are superior to those of thixo-diecasting part.

关 键 词：ZL201铝合金 半固态 流变压铸 

分 类 号：TG292[金属学及工艺—铸造]