Forming conditions of blisters during solution heat treatment of Al–Si alloy semi-solid die castings  

作　　者：Hong-Xing Lu Qiang Zhu Stephen P.Midson Wen-Ying Qu Fan Zhang Da-Quan Li 

机构地区：[1]National Engineering and Technology Research Center for Nonferrous Metal Matrix Composites,General Research Institute for Nonferrous Metals,Beijing,100088,China [2]Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China

出　　处：《Rare Metals》2023年第11期3851-3858,共8页稀有金属（英文版）

基　　金：financially supported by the National Key Research and Development Program of China (No.2016YFB0301003);Shenzhen Science and Technology Innovation Commission under Projects (Nos.JCYJ20170307110223452,KQJSCX20170328155402991 and KQTD20170328154443162)。

摘　　要：In the present study,numerical simulation method was used to analyze the conditions,resulting in the formation of blisters during solution heat treatment.Blister formation is considered to occur as the height of blister reaches 5μm.The effects of process parameters on the magnitude of the forming temperatures of blister(Tb)were discussed.Two kinds of Al-Si alloys were used to analyze the effect of mechanical properties of the alloys on blister forming conditions.Simulation results show that decreasing the initial pressure in gas hole,the long-short axial ratio of gas hole and the size of gas hole,as well as increasing the depth of gas hole and the strength of alloy are helpful to increase the critical temperature of forming blister.These conclusions are helpful for casters to understand the conditions controlling blister formation during solution heat treatment and take actions to avoid the blister defects.

关 键 词：BLISTER Forming condition Semi-solid die casting Aluminum alloy 

分 类 号：TG156.94[金属学及工艺—热处理]