固溶态Al-Mg-Si合金的电阻变化研究  

Research on resistivity of solution-treated Al-Mg-Si alloys

作　　者：蔡军辉[1] 金曼[1] 邵光杰[1] 

机构地区：[1]上海大学上海市现代冶金及材料制备重点实验室,上海200072

出　　处：《材料热处理学报》2008年第5期97-100,共4页Transactions of Materials and Heat Treatment

基　　金：长江学者和创新团队发展计划资助(IRT0739)

摘　　要：通过电阻法研究了完全固溶态和退火态的Al-Mg-Si合金,分析了空位、溶质原子和析出相对合金固溶体电阻率的影响,在此基础上补充并修定了Matthissen定律,对低浓度固溶体电阻率偏离Matthissen定律这一现象作出了合理的解释,得到了合金电阻率与成分和固溶温度的关系式。经验证,合金电阻率的计算值与实验测得值比较接近。Electrical resistivity of annealed and solution-treated Al-Mg-Si alloys were investigated by experiment and calculation,and the effects of vacancy,solute atoms and second-phases on resistivity of the alloys were analyzed.Matthissen＇s rule is modified,based on the investigation,which explains reasonably the deviation of resistivity from Matthissen＇s rule for low-concentration solid solution.The guantitied relationship among the resistivity,composition and solution-treated temperature for the alloys was obtained,and the calculated results were very close to the experimental results.

关 键 词：AL-MG-SI合金 电阻法 固溶 Matthissen定律 

分 类 号：TG146.2[一般工业技术—材料科学与工程]