Study on Microstructure Heredity Effects of Al-Ti-B Master Alloy on A356 Alloy
Author of the article:SHEN Yubin;YU Zhanju;ZHANG Haipeng;LIN Bo
Author's Workplace：Binzhou Movever Dicastal Wheel Co.,Ltd.,Binzhou 256600,China
Key Words：Al-Ti-B intermediate alloy TiAl3 microstructure refinement microstructure genetic effects
Abstract：A356 alloy with different Ti content was prepared under the same condition.The influence of Al-Ti-B intermediate alloy with different microstructure on the refinement effect of A356 alloy was studied by the statistics of its grain size and secondary dendrite arm spacing.The results show that with the increase of Ti content,the grain size of A356 alloy gradually increases and becomes stable.With the increase of Ti content,the secondary dendritic arm spacing first decreases and then increases.With the same composition of A356 alloy,the smaller the TlAl3 phase grain size of Al-Ti-B alloy inoculation treatment,the better the refining effect,indicating that the Al-Ti-B intermediate alloy has obvious genetic characteristics on the microstructure of A356 alloy.
