摘要
采用透射电镜 (TEM)和维氏硬度计详细研究淬火后与人工时效前的时间间隔 (自然时效 )对 Al- L i- Cu- Mg合金的影响。研究发现 ,通过在人工时效前引入自然时效可以提高 Al- 2 .4L i- 1.16 Cu- 0 .8Mg- 0 .1Zr(wt% )合金的硬度。合金硬度的增加主要来自于 S相数量的增加和分布更均匀。在人工时效前引入自然时效对 δ′相的尺寸和分布没有影响。
WT5BZ]The effect of natural aging on the microstructures of Al Li Cu Mg Zr alloy was studied by transmission electron microscopy and Vickers hardness tester It is found that the natural aging before artificial aging may raise the hardness Analysis indicates that the efficient hardness comes from the increasing number of S particles There is no effect on δ′ from natural aging before artificial aging The long natural aging has a little effect on Al Li Cu Mg Zr alloy
出处
《材料工程》
EI
CAS
CSCD
北大核心
2001年第1期10-11,18,共3页
Journal of Materials Engineering
