Al-Er-B三元相图773 K等温截面的实验测定  

Experimental Determination of 773 K Isothermal Cross Section of Al-Er-B Ternary Phase Diagram

作　　者：劳政基 杨杰城 罗文添 熊昭栋 林郭强 

机构地区：[1]广西大学资源环境与材料学院,广西 南宁 [2]广西高校高性能结构材料及热表加工重点实验室,广西 南宁

出　　处：《材料科学》2023年第6期529-535,共7页Material Sciences

摘　　要：使用真空电弧炉熔炼了不同成分的Al-Er-B合金,将合金放入石英玻璃管中抽真空后,在773 K的温度下保温720 h,然后使用冰水进行水淬。运用X射线衍射、金相分析等方法对退火720 h的合金试样进行了研究。测定了Al-Er-B三元相图773 K等温截面。实验结果表明,该等温截面包含以下3个三相区:第一个三相区为AlEr、Al2Er3、ErB2,第二个三相区为Al3Er、Al2Er、ErB4,第三个三相区为Al、Al3Er、ErB4。Al-Er-B alloys with different compositions were melted using a vacuum arc fur-nace. The alloy was placed in a quartz glass tube for vacuum extraction and kept at a temperature of 773 K for 720 hours. Then, it was quenched with ice water. The alloy samples annealed for 720 h were studied by means of X-ray diffraction and metallographic analysis. The isothermal cross-section of the Al-Er-B ternary phase diagram at 773 K was determined. The experimental results show that the isothermal crosssection consists of three three-phase regions: the first three-phase region is AlEr, Al2Er3, and ErB2, the second three-phase region is Al3Er, Al2Er, and ErB4, and the third three-phase region is Al, Al3Er and ErB4.

关 键 词：铝合金 稀土 三元相图 等温截面 

分 类 号：TG1[金属学及工艺—金属学]