李慎兰,黄志其,陈维平,刘志铭,戚文军

• 1:华南理工大学机械与汽车工程学院
• 2:广东凤铝铝业有限公司
• 3:中南大学材料科学与工程学院
• 4:广州有色金属研究院

摘要(Abstract)：

为研究铝合金的淬火敏感性,采用分级淬火的方法测定了Al-Mg-Si-Mn合金的时间-温度-转化率(TTT)曲线,并与JMatPro软件绘制的TTT曲线进行了对比。利用EDS和XRD等分析手段并结合Avrami方程,研究了Al-Mg-Si-Mn合金在等温过程中的组织变化和相变动力学。结果表明:Al-Mg-Si-Mn合金在相同温度下等温时,随等温时间的延长电导率呈上升趋势;实验绘制和JMatpro软件计算得到的TTT曲线结果一致;实验合金TTT曲线的鼻尖温度为360℃,淬火敏感性较高;在高温区和低温区的淬火敏感性较低;动力学研究表明,实验合金中相变以针状和层片状沉淀相的增大、增厚交替为主。

关键词(KeyWords)： Al-Mg-Si-Mn合金;TTT曲线;JMatPro软件;淬火敏感性

Abstract:

Keywords:

基金项目(Foundation): 中国博士后科学基金(2012M511552);; 广东省重大科技专项(2009A080205001)

作者(Author): 李慎兰,黄志其,陈维平,刘志铭,戚文军

DOI: 10.13289/j.issn.1009-6264.2013.04.013

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