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.
出处
《材料科学》
2023年第6期529-535,共7页
Material Sciences
