摘要
对铸造Al-11Si-0.35Mg合金时效过程动力学进行了分析。根据升温差热扫描量热分析(DSC)曲线,利用动力学方程计算出了过渡相β′析出激活能。根据等温DSC曲线,利用Avrami公式计算出了GP区和过渡相β′的形状参数n和形核密度参数k。利用透射电子显微组织(TEM)分析对计算结果进行了讨论。
The age kinetics of Al-11Si-0.35Mg cast alloy has been analyzed.The activation energy of metastable β′ precipitation has been calculated with kinetic equation by analyzing differential scanning calorimetry(DSC) heating curves.The shape related parameters n and nucleation density related parameters k have been calculated using Avrami equation by analyzing DSC isothermal curves.The calculation results are discussed by transmission electron microscopy(TEM) analysis.
出处
《山东建筑大学学报》
2010年第1期5-9,13,共6页
Journal of Shandong Jianzhu University
基金
山东省自然科学基金项目(Y2007F39)
山东省中青年科研奖励基金项目(2008BS05002)
关键词
铸造铝合金
人工时效
动力学分析
激活能
形核密度
aluminum cast alloy
artificial aging
kinetic analysis
activation energy
nucleation density
