摘要
以 2 0 90 +Ce铝锂合金为研究对象 ,重点探索了电场处理的强化晶界效应 ,研究了室温拉伸性能、显微组织对之的响应关系。结果表明 ,电场固溶处理可强化晶界 ,从而减弱沿晶断裂倾向 ,获得改善塑性的效应 ,但对强度影响甚微。唯象理论研究表明 ,电场有助于增强晶内溶质固溶能力 ,阻碍溶质。
In this paper, specific emphasis has been placed on exploring the effect of electric field treatment on grain boundary strengthening for Al-Li alloy 2090+Ce. The relation of the tensile properties to the electric field was investigated. The results show that the grain boundary can be so strengthened as to weaken the intergranular failure. An improvement in ductility has been obtained, however, the change of strength was very little. The research results of phenomenological theory show that the solution ability of solute atoms was enhanced and the cluster gather of solute atoms and vacancy was improved by electricfield treatment.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2001年第5期331-334,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金资助项目 (5 98710 39)
