金属间化合物Al2CuMg的制备

摘要

依据Al-Cu-Mg合金相图,采用不同比例的原材料成分配比进行真空冶炼和热处理制备金属间化合物Al2 CuMg,并采用扫描电子显微镜、能谱分析、X射线衍射等方法分析材料的成分、组成和微观组织.结果表明:配比为51 Al-33Cu-16Mg(质量分数,下同)的原材料经真空熔炼、定向凝固和水冷后得到粗大晶粒的Al2 CuMg相,且杂质较多；配比为50Al-25Cu-25 Mg的原材料经真空熔炼、凝固和水冷获得多相材料,在510℃进行不同时间的热处理,经72h保温处理后能得到纯度高达98％的Al2CuMg相材料.%Al2CuMg material was manufactured by vacuum smelt and heat treatment according to different component materials of Al-Cu-Mg alloy phase diagram. The component, phase, microstructures are investigated by scanning electron microscope, energy spectrum analysis and X ray diffraction. The results show that the bulky Al2CuMg phase is gained by vacuum smelt, directional solidification and water-cooling of component materials of the proportion as 51 Al-33Cu-16Mg. But the content of other phases is more. The proportion of Al2CuMg phase material which is obtained by vacuum smelt, solidification, water-cooling and 72 hours heat treatment of component material as 50Al-25Cu-25Mg is above 98% .