ZL101铝合金熔体旋转磁场及Al-3B细化处理效果比较研究  

Comparative Study on the Effects of Rotating Magnetic Field and Al-3B Refiner Treatment on ZL101 Aluminum Alloy Melt

作　　者：王晓彤 王傲[1] 肖世林 李大勇[1] WANG Xiao-tong;WANG Ao;XIAO Shi-lin;LI Da-yong(School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin 150080,Heilongjiang,China)

机构地区：[1]哈尔滨理工大学材料科学与化学工程学院,黑龙江哈尔滨150080

出　　处：《铸造》2022年第12期1519-1524,共6页Foundry

摘　　要：采用智能温度记录仪、金相显微镜、拉伸试验机,分别研究了旋转磁场和Al-3B细化剂处理对ZL101铝合金熔体凝固过程、显微组织及力学性能的影响。对比结果显示,在ZL101铝合金中添加Al-3B细化剂,随细化剂中B含量增大,α(Al)的平均晶粒尺寸先减小后增大,抗拉强度和伸长率先增大后减小,当Al-3B细化剂B含量达到0.06%时细化效果最优,抗拉强度和伸长率分别提高9.4%和34.9%。用旋转磁场细化ZL101铝合金熔体时,随旋转磁场电流参数增大,α(Al)的平均晶粒尺寸先减小后增大,抗拉强度和伸长率先增大后减小,最优参数电流为80A、频率为8 Hz,抗拉强度和伸长率分别提高10.5%和37.2%。采用最佳含量Al-3B细化剂和最优参数旋转磁场对同一成分的ZL101铝合金熔体进行细化处理效果对比表明,旋转磁场处理效果优于细化剂细化效果。The effects of rotating magnetic field and Al-3B refiner treatment on the solidification process, microstructure and mechanical properties of ZL101 aluminum alloy melt were studied by using intelligent temperature recorder, metallographic microscope and tensile testing machine. The comparison results showed that the average grain size of α(Al) decreased first and then increased with the increase of B content in the refiner,and the tensile strength and elongation increased first and then decreased with the increase of the B content in the refiner. When the B content of Al-3B refiner reached 0.06%, the refining effect was the best. The tensile strength and elongation increased by 9.4% and 34.9%, respectively. With the increase of rotating magnetic field current parameters, the average grain size of α(Al) decreased first and then increased, tensile strength and elongation increased first and then decreased. The optimal parameter current was 80A, frequency was 8Hz,and the tensile strength and elongation increased 10.5% and 37.2%, respectively. The results showed that the effect of the rotating magnetic field was better than that of the refiner for the ZL101 alloy melt with the same composition.

关 键 词：ZL101铝合金 旋转磁场 Al-3B细化剂 显微组织 力学性能 

分 类 号：TG146.21[一般工业技术—材料科学与工程]