摘要
采用热模拟试验技术和TEM分析,探讨了经高效熔体处理的易拉罐用铝材在不同变形条件下的微观组织特征和动态软化行为。结果表明,应变速率为0.1s-1时,若变形温度较低,则发生了动态回复;若变形温度高于723K,产生明显的动态再结晶;变形温度为673K时,在低应变速率条件下,产生动态再结晶;应变速率高于0.1s-1,软化过程具有动态回复和动态再结晶的混合特征;当应变速率高于5.0s-1时,产生几何动态再结晶。
Microstructure features and dynamic softening behavior of aluminum sheet for easy-open can during hot deformation were analyzed by hot deformation simulator and TEM (transmission electron microscope). The results show that dynamic recovery occurs at a low temperature with a strain rate of 0.1s-1,and dynamic re-crystallization appears obviously with temperature higher than 723K. Dynamic re-crystallization can be observed in the sheet with a low strain rate at 673K,when strain rate is higher than 0.1s-1,with increasing in strain rate,softening behavior is characterized by the combination of dynamic recovery and dynamic re-crystallization. However,it is characterized by geometry dynamic re-crystallization with strain rate more than 5.0s-1.
出处
《特种铸造及有色合金》
CAS
CSCD
北大核心
2009年第9期797-799,共3页
Special Casting & Nonferrous Alloys
基金
福建省自然科学基金资助项目(E0610004
E0210011)
关键词
易拉罐用铝材
热变形
高温流变应力
微观组织
动态再结晶
Aluminum Sheet for Easy-open Can,Flow Stress at Elevated Temperature,Microstructure,Dynamic Re-crystallization
