典型文献
Defect band formation in high pressure die casting AE44 magnesium alloy
文献摘要：
The characteristics of defect bands in the microstructure of high pressure die casting (HPDC) AE44 magnesium alloy were investigated. Special attention was paid to the effects of process parameters during the HPDC process and casting structure on the distribution of defect bands. Results show that the defect bands are solute segregation bands with the enrichment of Al, Ce and La elements, which are basically in the form of Al11RE3 phase. There is no obvious aggregation of porosities in the defect bands. The width of the inner defect band is 4-8 times larger than that of the outer one. The variation trends of the distribution of the inner and outer defect bands are not consistent under different process parameters and at different locations of castings. This is due to the discrepancy between the formation mechanisms of double defect bands. The filling and solidification behavior of the melt near the chilling layer is very complicated, which finally leads to a fluctuation of the width and location of the outer defect band. By affecting the content and aggregation degree of externally solidified crystals (ESCs) in the cross section of die castings, the process parameters and casting structure have a great influence on the distribution of the inner defect band.
文献关键词：
中图分类号：
作者姓名：
Ying-ying Hou;Meng-wu Wu;Feng Huang;Xiao-bo Li;Shou-mei Xiong
作者机构：
Hubei Key Laboratory of Advanced Technology for Automotive Components,Wuhan University of Technology,Wuhan 430070,China;School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China
文献出处：
引用格式：
[1]Ying-ying Hou;Meng-wu Wu;Feng Huang;Xiao-bo Li;Shou-mei Xiong-.Defect band formation in high pressure die casting AE44 magnesium alloy)[J].中国铸造,2022(03):201-210
A类：
AE44
B类：
Defect,formation,high,pressure,die,magnesium,alloy,characteristics,defect,bands,microstructure,HPDC,were,investigated,Special,attention,was,paid,effects,process,parameters,during,distribution,Results,show,that,are,solute,segregation,enrichment,Ce,La,elements,which,basically,Al11RE3,phase,There,obvious,aggregation,porosities,width,inner,times,larger,than,outer,one,variation,trends,not,consistent,under,different,locations,castings,This,due,discrepancy,between,mechanisms,double,filling,solidification,behavior,melt,near,chilling,layer,very,complicated,finally,leads,fluctuation,By,affecting,content,degree,externally,solidified,crystals,ESCs,cross,section,have,great,influence
AB值：
0.493829
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