摘要
研究了控制浇注法制备A356合金半固态枝晶衍变规律,结果表明:原始显微结构对枝晶半固态衍变具有较大影响,对于原始组织粗大的树枝晶合金,即使经过长时间的保温,初生α相仍为枝晶网状结构;而原始组织细小的等轴晶迅速转变为球状结构.
The microstructural evolution of A356 produced by controlled pouring during partial remelting and isothermal holding was investigated in this study. The results show that the original structure affects the microstrucrural evolution process in a great extent. The material with a very dendritic microstructure is still solid network even after a relatively long holding time, while the material with fine dendrites is susceptible for developing into globular structure.
出处
《哈尔滨理工大学学报》
CAS
2005年第4期26-28,32,共4页
Journal of Harbin University of Science and Technology
基金
黑龙江省教育厅海外学人科研资助项目(1054HQ009)
哈尔滨市留学归国人员基金(2003AFLXJ001)
关键词
原始组织
枝晶衍变
颗粒尺寸
颗粒圆整度
original structure
icrostructural evolution
article size
article roundness
