新型铝合金细化/净化复合熔剂对A356.2组织和性能的影响  

Effect of New Refining/Purifying Multi-Function Flux on Microstructure and Properties of A356.2 Aluminum Alloy

作　　者：郑毅坚 ZHENG Yi-jian(Vesuvius Foundry Technologies(Jiangsu)Co.,Ltd.,Changshu 215537,Jiangsu,China)

机构地区：[1]维苏威铸造科技(江苏)有限公司,江苏常熟215537

出　　处：《铸造》2024年第10期1412-1419,共8页Foundry

摘　　要：为提高A356.2铸造铝合金的力学性能,开发了一种新型复合熔剂(NUCLEANT 1582)用于铝合金熔体净化和其晶粒细化,该复合熔剂主要成分为含Ti、B元素的无机盐。通过第一阶段研究发现,在加入量为0.05%时,获得明显的细化效果;随着复合熔剂加入量的提高,铝合金晶粒细化效果随之提高;当复合熔剂的加入量超过0.2%时,细化效果提升趋缓;第二阶段将新型复合熔剂与Al-5Ti-1B晶粒细化剂进行对比,结果表明:新型复合熔剂的细化效果比Al-5Ti-1B细化剂提高了15%,抗拉强度提高了5.8%,伸长率提高了190%,实现了在不增加Ti元素含量的基础上提高了晶粒细化效果。In order to improve the mechanical properties of A356.2 cast aluminum alloy,a new multi-function flux(NUCLEANT 1582)was developed for the purification of aluminum alloy melt and its grain refinement simultaneously.The main component of the multi-function flux was an inorganic salt containing Ti and B elements.Through the first stage of research,it was found that when the addition amount was 0.05%,a significant refinement effect was obtained;with the increase of the amount of multi-function flux,the grain refinement effect of aluminum alloy increased.When the amount of multi-function flux was more than 0.2%,the refinement effect was leveling off.In the second stage,the new multi-function flux was compared with Al-5Ti-1B grain refiner.The results showed that the refinement effect of the new composite flux was 15%higher than that of Al-5Ti-1B refiner,the tensile strength increased by 5.8%,and the elongation increased by 190%.The grain refinement effect was improved without increasing the content of Ti element.

关 键 词：A356.2铝合金 晶粒细化 新型复合熔剂 力学性能 

分 类 号：TG164.21[金属学及工艺—热处理] TG113[金属学及工艺—金属学]