半固态ZL101合金重熔加热时初生相的组织演变  

Microstructure evolution of primary phase in semi-solid ZL101 alloy during reheating

作　　者：刘政[1] 胡咏梅[2] 

机构地区：[1]江西理工大学机电工程学院,江西赣州341000 [2]江西理工大学工程院,江西赣州341000

出　　处：《轻金属》2010年第9期65-69,共5页Light Metals

基　　金：江西省自然科学基金项目资助(0650047);江西省教育厅科技项目(GJJ09229)

摘　　要：利用低过热度浇注技术制备了半固态ZL101铝合金坯料,研究了半固态温度区间重熔加热时半固态ZL101铝合金坯料的初生相形貌的转变过程。研究结果表明,在半固态两相区保温,半固态ZL101合金的初生相逐渐团球化,该过程随保温温度的升高而加快。半固态ZL101铝合金晶粒的圆度与保温温度和保温时间的关系不大,但晶粒的尺寸随着保温温度和保温时间的增加而增大。半固态ZL101合金试样重熔加热最佳工艺制度为583℃下保温30m in,其晶粒平均等积圆直径为80μm,晶粒平均圆度为0.83。The semi-solid ZL101 alloy billet is prepared by low superheat pouring,and the transform course for primary phase morphology of the billet is researched during reheating in solid-liquid phase region.The results indicate that the primary phase of semi-solid ZL101 alloy is gradually globularized during the holding in solid-liquid phase region,in which globularization is speeded up with the increase of the holding temperature.There is a little effect of holding temperature and holding time on grain roundness o...

关 键 词：半固态 ZL101铝合金 重熔加热 组织演变 

分 类 号：TG249.9[金属学及工艺—铸造]