超聲波攪拌及等溫熱處理對ZL101合金半固態(tài)組織的影響
發(fā)布時間:2018-03-22 14:56
本文選題:ZL合金 切入點:超聲波攪拌 出處:《材料導報》2015年10期 論文類型:期刊論文
【摘要】:采用超聲波攪拌和等溫熱處理制備ZL101合金半固態(tài)坯料,研究了超聲波攪拌處理和等溫熱處理中等溫溫度、等溫時間等工藝參數(shù)對ZL101半固態(tài)組織形貌的影響。研究結(jié)果表明:超聲波攪拌可有效細化和球化組織,消除組織缺陷;適當?shù)牡葴靥幚砜梢悦黠@改善半固態(tài)ZL101的凝固組織;當?shù)葴販囟葹?90℃、等溫時間為30min時,半固態(tài)ZL101合金中初生α-Al相細化和球化效果最明顯;初生α-Al相的平均等積圓尺寸達到157μm,形狀因子達到0.87。
[Abstract]:The semisolid billets of ZL101 alloy were prepared by ultrasonic stirring and isothermal heat treatment. The isothermal temperatures of ultrasonic stirring and isothermal heat treatment were studied. The results show that ultrasonic stirring can refine and spheroidize the microstructure effectively, eliminate the microstructure defects, and the proper isothermal treatment can obviously improve the solidification structure of semi-solid ZL101. When the isothermal temperature is 590 鈩,
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