摘要
本文用粉末冶金法生产SiCp/MR64复合材料,并对其超塑性进行了研究。在500℃～520℃、应变速率为8.33×10^(-3)s^(-1)获得最大延伸率为210％。SiCp数量和尺寸对超塑性有很大影响,复合材料超塑性低的原因在于变形过程中产生大量孔洞,孔洞是应变软化的主要原因。
In the present investigation about SiCp/MR64 and its superplasticity,SiCp/MR64 exhibits a maxi-mum tensile elongation of 210 % at 500～520℃ for an initial strain rate of 8. 33×10^(-3)s^(-1).Size and vol-ume of SiCp have a big effect on superplasticity. The superplastic ductility of SiCp/MR64 is lower than thatof other alloys is the result of high volume of cavities,and cavitation is the main reason which cause aweakening effect in the material.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1993年第1期8-11,共4页
Journal of Materials Engineering
关键词
铝基复合材料
超塑性
孔洞
AI matrix composities
Superplasticity
Cavity
