摘要
分别采用电磁铸造和普通连铸技术制备了2E12铝合金连铸锭。通过显微组织和力学性能的对比分析,研究施加电磁场对2E12铝合金连铸过程及铸锭性能的影响。结果表明,使用电磁铸造技术制备的2E12铝合金铸锭具有良好的表面质量和内部组织,以及优良的力学性能。其中,电磁铸造方法获得的2E12铝合金铸锭相对于普通连续铸造铸锭晶粒平均尺寸由58μm减小至36μm,抗拉强度提高了9.08%,伸长率提高了61.58%,断裂方式为准解理断裂。
2E12 aluminum alloy continuous casting ingots were prepared by electromagnetic casting and direct chilling casting,respectively.Through comparatively analyzing microstructure and mechanical properties of two kinds of ingots,effects of electromagnetic field on continuous casting process and properties of 2E12 aluminum alloy ingots were investigated.The results reveal that electromagnetic continuous casting 2E12 aluminum alloy ingot exhibits excellent surface quality and microstructure as well as desirable mechanical properties.Compared with those of direct chilling casting ones,the average grain size is decreased from 58 μm to 36 μm,tensile strength and elongation of electromagnetic continuous casting 2E12 ingot are increased by 9.08% and by 61.58%,respectively.In addition,fracture mechanism of the EMC ingot is characterized by quasi-cleavage crack.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2009年第11期1042-1045,共4页
Special Casting & Nonferrous Alloys
基金
国家重点基础研究发展计划("973计划")资助项目(2005CB623705)
国家自然科学基金资助项目(50875031)
关键词
2E12铝合金
电磁铸造
普通连续铸造
显微组织
力学性能
2E12 Aluminum Alloy,Electromagnetic Casting,Direct Chilling Casting,Microstructure,Mechanical Properties
