电磁连铸Al-1%Si棒材的组织和力学性能  

Structure and Mechanical Properties of Al-1%Si Bar Material Prepared by Electromagnetic Continuous Casting

作　　者：张婷[1] 曹志强[1] 杨淼[1] 刘红才[1] 

机构地区：[1]大连理工大学材料科学与工程学院,辽宁大连116024

出　　处：《机械工程材料》2007年第5期41-44,共4页Materials For Mechanical Engineering

基　　金：国家自然科学基金(50274018)

摘　　要：采用电磁连铸和普通连铸技术制备了Al-1%Si合金棒材,对其微观组织及力学性能进行了分析。结果表明:电磁连铸技术得到的合金晶粒细小,且硅的分布比较均匀;其硬度比普通连铸得到的合金提高6%,抗拉强度提高7.2%,伸长率提高21.2%;其断口表面韧窝比较深,韧性好,且有大量滑移线存在。The electromagnetic continuous casting （EMCC） and direct chill continuous casting （DCC） methods were used to make Al-1% Si alloy, respectively. The crystal structure and mechanical properties were analyzed. Compared with DCC, EMCC ingots have more fine size of grain and the element Si distributed uniformly; the hardness, tensile strength and elongation are increased by about 6%, 7. 2% and 21.2% respectively; the dimple of fracture face is deeper; the toughness is higher; and there are numerous slip lines.

关 键 词：铝合金 硬度 电磁连铸 显微组织 

分 类 号：TG249.7[金属学及工艺—铸造]