氟盐反应时间对高压开关材料Al-Mg-Cu-(La)合金组织演变的影响  

Effect of Fluoride Salt Reaction Time on Microstructure Evolution of Al-Mg-Cu-(La)Alloys of High Voltage Swithing Material

作　　者：吴万军 张敏[1] 张国锋 张朝雁 李景丽[4] 周培 WU Wanjun;ZHANG Min;ZHANG Guofeng;ZHANG Chaoyan;LI Jingli;ZHOU Pei(Diqing Power Supply Bureau of Yunnan Power Grid Corporation,Diqing 674499,China;Henan Sida Electric Power Equipment Co.,Ltd.,Xuchang 461503,China;Honghe Power Supply Bureau of Yunnan Power Grid Corporation,Honghe 661000,China;School of Electrical Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]云南电网公司迪庆供电局,云南迪庆674499 [2]河南四达电力设备股份有限公司,河南许昌461503 [3]云南电网公司红河供电局,云南红河661000 [4]郑州大学电气工程学院,河南郑州450001

出　　处：《热加工工艺》2022年第9期73-76,共4页Hot Working Technology

基　　金：国家自然科学基金项目(51307152)。

摘　　要：通过氟盐法制得一种新的Al-Mg-Cu-(La)合金细化剂。通过实验测试研究了氟盐反应时间对Al-Mg-Cu-(La)合金组织演变的影响。结果表明:铝熔体和氟盐之间的反应时间并不会造成合金物相结构的明显变化。加入La元素后,依然存在Al_(2)Cu与AlMg相的特征峰,同时检测出了Al_(3)MgLa的衍射峰。Al-Mg-Cu-La合金中形成的AlMg与Al_(3)MgLa第二相晶粒尺寸比Al-Mg-Cu合金晶粒更小,加入La元素能对AlMg中间相发挥变质细化的效果。增加反应时间在合金中形成了更高比例的Mg。La可以促进氟盐和铝熔体更快完成化学反应过程,起到明显的催化效果,使Al达到更充分的反应程度。A new refinement agent of Al-Mg-Cu-(La)alloys was prepared by fluoride salt method.The effects of fluoride salt reaction time on the microstructure evolution of Al-Mg-Cu-(La)alloys were studied by experimental test.The results show that the reaction time between aluminum melt and fluoride salt does not change the phase structure of the alloys.After adding La element,the characteristic peaks of Al_(2)Cu and Al Mg phase still exist.At the same time,the diffraction peaks of the Al_(3)Mg La are detected.The grain sizes of the second phase of Al Mg and Al_(3)Mg La formed in Al-Mg-Cu-La alloy are smaller than those of Al-Mg-Cu alloy,and the addition of La element can exert the effect of metamorphism and refinement on Al Mg mesophase.A higher proportion of Mg is formed in the alloy by increasing the reaction time.La can accelerate the chemical reaction process between fluorine salt and aluminum melt,play an obvious catalytic effect,and make Al reach a more adequate reaction degree.

关 键 词：稀土La 晶粒细化 Al-Mg-Cu-RE合金 高压开关 

分 类 号：TG243[金属学及工艺—铸造] TG146.21[一般工业技术—材料科学与工程]