半固态坯料加热过程中固-液界面的传热特性研究  

Heat Transfer Characteristics between Solid-Liquid Interface on Semi-Solid Billet during Heating Process

作　　者：程婷[1] 郑志强[1] 熊新根[1] 刘泽文[1] 袁岳[1] 

机构地区：[1]南昌大学机电工程学院

出　　处：《特种铸造及有色合金》2013年第10期928-931,共4页Special Casting & Nonferrous Alloys

基　　金：江西省教育厅科技攻关资助项目(GJJ10365)

摘　　要：采用钢及Al-10Si合金研究其半固态坯料加热时,液相温度与固相颗粒半径对热传导行为的影响。试验发现,液相温度和固相颗粒半径对固相传热效果有影响,且固相颗粒半径的影响程度会受到液相温度的制约;固相升温状态主要取决于固-液两相区的温度场的传热效果。Influences of liquid temperature and the solid particles radius on the heat transfer behavior in solid state were analyzed by heating steel and Al-10Si alloy semi-solid billet samples. The results reveal that liquid temperature and the solid particles radius have olvious effects on solid-phase heat transfer, and the solid phase particle radius is constrained by the liquid temperature. Solid phase heating state is mainly depen- ded on the heat transfer effect of the temperature field in the solid - liquid two-phase region.

关 键 词：半固态 液相温度 固体颗粒半径 固-液界面 热传导 

分 类 号：TG21[金属学及工艺—铸造]