摘要
采用真空感应熔炼技术制备Mg-8.5Li-3Al-xCe(x=0,1,3)合金。研究Mg-8.5Li-3Al-xCe系合金的时效行为。结果表明,Ce对时效硬化程度具有显著的影响,随Ce含量的增加合金在各时期的硬度都增大,最高时效峰硬度也随之提高,过时效软化的程度随之降低。Ce抑制时效硬化相MgLi2Al和时效软化相AlLi相的生成是Mg-8.5Li-3Al-xCe系合金时效硬化及过时效软化程度降低的主要原因,Ce是抑制Mg-Li-Al合金发生时效软化的有益元素。
Mg-8.5Li-3Al-xCe （x=0, 1, 3） alloys were prepared with vacuum induction melting method. Then the aging behavior of the Mg-8.5Li-3Al-xCe alloy was investigated. The results show that Ce has an obvious effect on the aging-hardening process. With the increase of Ce content, the aging hardness increases and the over-aging softening is suppressed to some extent. The aging hardnes increase and the over-aging softening decrease of Mg-8.5Li-3Al-xCe （x=0, 1, 3） alloys is mainly attributed to that Ce inhibits the generation of age-hardening phase MgLi2A1 and over-aging softening phase A1Li. Ce can hinder the over-aging process in Mg-Li-AI alloys.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2013年第1期94-98,共5页
Rare Metal Materials and Engineering
基金
黑龙江省自然科学基金(E200913)
黑龙江省教育厅科研项目(11551477)
佳木斯大学人才培养项目(RC2009-035)
