再生铝合金中富Fe相形貌的改善  

Improvement of Fe Rich Phase Morphology in Recycled Aluminum Alloys

作　　者：苗赛男 郑长清 周亚伟 李泉 李国瑞 吕小松 MIAO Sai-nan;ZHENG Chang-qing;ZHOU Ya-wei;LI Quan;LI Guo-rui;LV Xiao-song(Baoding Lizhong Wheel Manufacturing Co.,Ltd.,High Strength and Lightweight Wheel Technology Innovation Center of Hebei Province,Baoding 071000,Hebei,China)

机构地区：[1]保定市立中车轮制造有限公司,河北省高强韧轻量化车轮技术创新中心,河北保定071000

出　　处：《铸造》2024年第12期1699-1703,共5页Foundry

基　　金：河北省创新能力提升计划项目(24431003D)。

摘　　要：为明确Mn、Cr元素对再生铝合金中富Fe相的协同作用及最佳配比,通过光学显微镜、扫描电子显微镜和拉伸试验机等研究了合金的微观组织及力学性能,并与未添加微合金化元素的再生铝合金进行对比。结果表明,在本试验条件下,Fe元素含量为0.3%时,添加不同Mn和Cr元素会导致富Fe相形貌发生改变,当Fe∶Mn∶Cr约为5∶3∶1时,合金中富Fe相形貌最佳,均由针片状转变为汉字状或颗粒状,进一步增加0.04%的RE元素对合金进行细化,使再生铝合金性能达到最佳。The purpose of this study was to clarify the synergistic effect and optimal ratio of Mn and Cr elements on the Fe rich phase in recycled aluminum alloys.The microstructure and mechanical properties of the alloy were studied using optical microscopy,scanning electron microscopy,and tensile testing machines.The recycled aluminum alloy without micro alloying elements was used as a comparison.The research results showed that under the experimental conditions,adding different Mn and Cr elements caused changes in the morphology of the Fe containing phase when the Fe element content was 0.3%.When the Fe﹕Mn﹕Cr ratio was about 5﹕3﹕1 under the conditions of this experiment,the Fe containing phase in the alloy had the best morphology,transforming from needle like to Chinese character like or granular.Further refining the alloy with 0.04%RE element achieved the best performance.

关 键 词：再生铝合金 协同作用 富Fe相 微观组织优化 性能提升 

分 类 号：TG146.21[一般工业技术—材料科学与工程]