Sb元素在铸造Al-Si合金中的作用  

Role of Sb Element in Casting Al-Si Alloy

作　　者：刘东洋 虞秀勇 高文理[1] 毛郭灵 高艳丽 LIU Dongyang;YU Xiuyong;GAO Wenli;MAO Guoling;GAO Yanli(School of Materials Science and Engineering,Hunan University,Changsha 410082,China;First Company of China Eighth Engineering Division Ltd.,Ji'nan 250000,China;AVIC Beijing Aeronautical Materials Research Institute,Beijing 100095,China)

机构地区：[1]湖南大学材料科学与工程学院,湖南长沙410082 [2]中建八局第一建设有限公司,山东济南250000 [3]中国航发北京航空材料研究院,北京100095

出　　处：《热加工工艺》2022年第5期1-5,12,共6页Hot Working Technology

摘　　要：对Sb元素在Al-Si合金中的作用研究进行了总结与分析。可以得出:Sb元素对Al-Si合金的初生α-Al枝晶和共晶Si都有影响;Sb元素的变质与冷却速率有关,存在过变质现象,Sb元素会形成AlSb,Mg_(3)Sb_(2)等,可导致Sb过变质;Sb元素是长效变质剂,有一定的孕育期,有良好的重熔性且重熔后无孕育期。Sb的变质机理研究还没有一致结论。Sb元素对Al-Si合金的流动性等也有影响。Sb元素对人体和环境会造成一定的危害。本文还指出了现有研究的不足以及未来的研究方向。The role of Sb element in Al-Si alloys was summarized and analyzed.It can be concluded that Sb element has influence on primary α-Al dendrite and eutectic Si of Al-Si alloy.The modification of Sb element is related to cooling rate,and there is a phenomenon of over-modification.Sb element forms AlSb,Mg_(3)Sb_(2),etc.,which can lead to Sb over-modification.Sb element is a long-acting modifier,has a certain incubation period,good remelting and no incubation period after remelting.The study of Sb modification mechanism has not consistent conclusion.Sb element also affects the fluidity of Al-Si alloys.Sb element will cause certain harm to human body and environment.The shortcomings of the existing research and the future research direction were also pointed out.

关 键 词：Sb元素 AL-SI合金 长效变质剂 孕育期 重熔性 

分 类 号：TG292[金属学及工艺—铸造]