摘要
研究结果表明:低的浇注温度有利于细化AZ91D消失模铸件试样的晶粒和提高其力学性能,但低于740℃时晶粒细化程度和力学性能相差不大;机械振动能明显细化不同浇注温度下的消失模AZ91D晶粒,且在740℃温度下细化程度最好;机械振动能大幅提高AZ91D消失模铸件试样的力学性能,其中抗拉强度和断后伸长率相比于铸态的,分别提高了23.2%和20.8%。
The effects of pouring temperature and mechanical vibration on microstructure and mechanical properties of AZ91D alloy via LFC were investigated in this paper. The results showed that it is propitious to refine the grain of AZ91D alloy via LFC and improve its mechanical properties at low pouring temperature, but the refined effort is not obvious and its mechanical properties is near after lowering to 740 ℃; the grain of AZ91D alloy at different pouring temperature can be obviously refined by mechanical vibration, and the refined effort is best at 740℃ ; mechanical vibration can also improve its mechanical properties to a great extent, and the values of tensile strength, elonoation are resoectivelv imoroved by 23.2%, 20.8%. compared to as-cast.
出处
《铸造》
EI
CAS
CSCD
北大核心
2007年第3期266-269,共4页
Foundry
基金
国家自然科学基金资助项目(50275058)
关键词
AZ91D
消失模铸造
浇注温度
机械振动
AZ91D
lost foam casting
pouring temperature
mechanical vibration
