摘要
从图4中可以看出,在300℃下时效1小时,组织中只有微量的α相析出,大部分为β相,当时效温度升高到350℃时,α相大量以针状在晶内析出,晶界有少量球状α相;在380℃和420℃时效1小时后,α相不仅仅以针状在晶内析出,晶界上也有很多球状α相，且数量明显增多；
The microstructure of Cu-37%Zn-2%Mn-1.6%Al-0.7%Fe-0.7%Si(mass fraction)alloy was studied by scanning electron microscopy,X-ray and optical microscopy.The α phase ratio and micro-hardness of this alloy after aging treatment were investigated.The results show that three kinds of phases,such as α phase,β phase and hexagonal club-shape Mn5Si3 phase were observed.The needle α phase ratio increases with aging temperature under 420℃ and reach peak value 25 percent after aging at 420℃×1h.The α phase ratio begin to decreases when the aging temperature over 420℃.The micro-hardness varying with aging temperature is the opposite.
出处
《有色金属加工》
CAS
2011年第3期13-15,8,共4页
Nonferrous Metals Processing
