热处理工艺对Al-Mg-Si系合金导热性能的影响  

Effects of Heat Treatment on Thermal Conductivity of Al-Mg-Si Aluminum Alloy

作　　者：张建新[1,2] 高爱华[3] 

机构地区：[1]河南理工大学文法学院 [2]河南理工大学材料科学与工程学院 [3]河南理工大学机械与动力工程学院

出　　处：《特种铸造及有色合金》2011年第10期911-913,共3页Special Casting & Nonferrous Alloys

基　　金：河南省教育厅自然科学研究计划项目(2008B430010)

摘　　要：研究了热处理工艺对Al-Mg-Si合金导热性能的影响,并从理论上分析了热处理(均匀化、固溶、时效)的作用机理。结果表明,均匀化处理有助于改善合金的显微组织。采用560℃×6h均匀化制度后组织细小均匀,导热性能较好;随着固溶温度的升高,合金材料的导热性能有下降的趋势,在510℃时强度与导热性能达到较佳配合;人工时效后组织中的缺陷得到有效修复,使导热性能加强,使用200℃×6h时效制度较好。Effects of heat treatment on thermal conductivity of Al-Mg-Si aluminum alloy were approached,and the mechanism of heat treatment,such as homogenization,solid solution,aging treatment,was described. The results indicate that homogenization treatment is beneficial for improving the microstructure of the alloy. The fine and uniform structure in the alloy with acceptable thermal conductivity can be observed with homogenizing treatment at 560 ℃ for 6 hours. With solid solution temperature increase,the thermal conductivity of the alloy is decreased,and the alloy with desirable strength and thermal conductivity match can be obtained at 510 ℃ solid solution treatment. The thermal conductivity of the alloy is improved after artificial aging treatment as a result of the elimination of defects in the microstructure,and the desirable thermal conductivity can be presented with artificial aging treatment at 200 ℃ for 6 hours.

关 键 词：铝合金 热处理 组织 导热性能 

分 类 号：TG166.3[金属学及工艺—热处理]