摘要
通过Gleeble热模拟试验建立动态再结晶动力学模型,研究氧化夹杂对1235铝合金的动态再结晶行为的影响。研究表明,经不同净化处理的1235铝合金在热变形条件下均发生一定程度的动态再结晶。动态再结晶体积分数的计算值与实测值接近(相关系数R大于0.92),相关性高。在相同热变形条件下,含杂量越低,热压缩时动态再结晶的速度越慢,细小的夹杂物阻碍了动态再结晶晶粒的长大,再结晶晶粒细小。
Effect of oxide inclusion on dynamic recrystallization behavior of 1235 aluminum alloy were investigated by hot compression deformation tests on a Gleeble-1500 simulator and a dynamic recrystallization kinetics model was established.Results show that dynamic recrystallization occurred in 1235 aluminum alloy treated by different purification processes during hot deformation.The predicted results of dynamicaly recrystallized volume fraction by the model agrees well with the measured ones.At the same condition of deformation,the process of dynamic recrystallization occurs more slowly in the alloy with less impurities.Tiny inclusions inhibite the growth of recrystallized grains.As a result,the recrystallization grains are smaller.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2012年第2期149-153,共5页
Transactions of Materials and Heat Treatment
基金
福建省自然科学基金项目(E0610004)
关键词
铝合金
热压缩变形
动态再结晶
动力学
氧化夹杂
aluminum alloy
hot compression deformation
dynamic recrystallization
kinetics
oxide inclusion
