再生6061铝合金圆铸锭缺陷分析  

Analysis of defects in recycled 6061 aluminum alloy ingots

作　　者：韦杰宝 宋东福 刘欢 蔡月华 代文亮 柯彬 朱世安 WEI Jiebao;SONG Dongfu;LIU Huan;CAI Yuehua;DAI Wenliang;KE Bin;ZHU Shian(Guangdong Haomei Technology Innovation Research Institute Co.,Ltd.,Qingyuan 511500,China;Guangdong King Metal Light Alloy Technology Co.,Ltd.,Qingyuan 511500,China;Institute of New Materials Guangdong Academy of Sciences,Guangzhou 510650,China)

机构地区：[1]广东豪美技术创新研究院有限公司,广东清远511500 [2]广东精美特种型材有限公司,广东清远511500 [3]广东省科学院新材料研究所,广东广州510650

出　　处：《轻合金加工技术》2023年第5期22-28,共7页Light Alloy Fabrication Technology

基　　金：国家重点研发计划项目(2022YFC3900500);清远市省科技专项资金项目(2022DZX006);2022年清远市新型高性能材料产业人才振兴计划项目(2022YFJH001)。

摘　　要：采用金相显微镜、扫描电子显微镜对再生6061铝合金圆铸锭的铸造缺陷进行了分析,研究了几种典型铸造缺陷的形态特征和化学成分,并判定铸造缺陷类别。研究结果表明:再生6061铝合金圆铸锭主要缺陷包括氧化物夹杂、针孔、氯化物夹杂和缩松等。其中氧化物夹杂分为氧化铝和氧化镁两类;针孔的尺寸较小,分布较为均匀;氯化物夹杂的尺寸较大,且带有疏松的特征,分布无明显规律性;缩松和Mg_(2)Si的区别主要在于形态,前者结构简单,长径比较小。The casting defects of recycled 6061 aluminum alloy ingots were analyzed with optical microscopy and scanning electron microscopy.The morphological characteristics and chemical composition of several typical casting defects were studied,and the types of casting defects were identified.The results show that the main defects of recycled 6061 aluminum alloy ingots consist of oxide inclusions,pinholes,chloride inclusions and shrinkage porosity.Among them,the oxide inclusions are divided into two types,i.e.alumina and magnesium oxide.The pinholes are small and their distribution is relatively uniform.The chloride inclusions are large and loose,with no obvious regularity in distribution.The main difference between shrinkage porosity and Mg_(2)Si)lies in their morphology,the former has a simpler structure and a smaller aspect ratio.

关 键 词：再生6061铝合金 铸造缺陷 圆铸锭 氧化物夹杂 

分 类 号：TG146.21[一般工业技术—材料科学与工程]