摘要
利用熔体热速处理工艺(TRT)和普通熔炼工艺(CM),研究了Fe对AZ91镁合金热速处理组织、性能的影响。结果表明,采用将合金液过热至液相线以上200～300℃的热速处理工艺时,合金基体明显细化,改善了合金的力学性能。随着Fe含量的增加,热速处理后枝晶组织不但没有细化,大量显微缩松的出现影响了合金的力学性能。
The effect of Fe on the microstructure and properties of AZ91 Mg-Al alloy subjected to thermal rate treatment was investigated by using TRT and CM process. The results showed that the grains of the Mg-Al alloy were fined and the properties improved remarkable by the thermal rate treatment with the melting heated to 200 - 300℃ above the liquid line. With the content of Fe increasing, the dendritic structure could not be fined and a great number of dispersed shrinkage formed, therefore aggravating the properties of AZ91 Mg-Al alloy.
出处
《山东冶金》
CAS
2006年第3期64-65,共2页
Shandong Metallurgy
关键词
AZ91
热速处理
组织
性能
AZ9l
thermal rate treatment
microstructure
property
