GW103K合金熔剂净化的研究  

Flux Purification of Mg-Gd-Y (GW103K) Alloy

作　　者：郑韫[1,2] 吴国华[1,2] 侯正全[3] 陈斌[3] 王其龙[1,2] 丁文江[1,2] 

机构地区：[1]上海交通大学轻合金精密成型国家工程研究中心 [2]上海交通大学金属基复合材料国家重点实验室 [3]上海航天精密机械研究所

出　　处：《特种铸造及有色合金》2009年第12期1147-1150,共4页Special Casting & Nonferrous Alloys

基　　金：国家重点基础研究发展计划(973计划)资助项目(2007CB613701);国家十一五科技支撑计划资助项目(2006BAE04B07-2);上海市优秀学科带头人计划资助项目(08XD14020)

摘　　要：针对高强耐热的稀土镁合金净化困难、稀土元素损耗大的问题,采用自行开发的熔剂JDRJ-6对GW103K合金进行精炼,研究了不同YCl3含量的熔剂对合金净化效果及Y元素损耗率的影响,并与熔剂JDMJ及RJ-6的综合效果进行了比较。结果表明,经熔剂JDRJ-6+2.5%的YCl3精炼后,Y元素的损耗率和腐蚀速率分别下降至18.12%和0.837mg.cm-2.d-1,而抗拉强度、伸长率则分别提高至226.25MPa和4.86%,达到了预期的净化效果。Aiming at the difficulty in purifying the high strength and heat resistant RE magnesium alloy and in mass loss of RE in the alloy,we have developed a flux JDRJ-6 to refine the Mg-Gd-Y(GW103K)alloy to understand effects of the flux containing varied YCl3 content on purification and mass loss of Y element,and it is compared with JDMJ flux and RJ-6 flux.The results reveal that after refined by JDRJ-6+2.5%YCl3,the loss of Y and corrosion rate of the alloy are decreased to 18.12% and 0.837 mg·cm-2·d-1,respectively,while the tensile strength and elongation are improved to 226.25MPa and 4.86%,respectively,obtaining the expected results.

关 键 词：GW103K合金 YCl 精炼剂 净化 

分 类 号：TF822[冶金工程—有色金属冶金]