刘宏,陈扬,赵刚,刘春明,左良

• 1:山东轻工业学院机械工程学院
• 2:辽宁工学院材料与化学工程学院
• 3:东北大学材料与冶金学院
• 4:东北大学材料与冶金学院

摘要(Abstract)：

通过硬度、力学性能及成形性试验,研究了Mg含量对不同热处理的6000系铝合金成形性及烤漆硬化性能的影响。结果表明:T4态合金无论是否模拟酸碱洗加热,进行170℃人工时效后,其时效初期的硬度均呈下降趋势,而元素Mg含量的变化影响不大。固溶淬火态和T4P(5min)态合金在模拟烤漆过程中均未出现软化现象。合金的热处理方式对烤漆硬化性的提高比元素Mg的作用更有效。Mg元素的作用主要改变合金的固溶淬火、T4和T4P态的硬度。随Mg含量增加,固溶淬火态硬度单调升高,而T4和T4P态硬度在Mg含量达到1.7%时降低。Mg对T4和T4P(5min)态合金的力学性能和成形性的影响规律是:增加Mg含量,有利于提高合金的强度,但不利于合金的冲压成形。

关键词(KeyWords)： T4态;固溶淬火态;T4P态;烤漆硬化性;成形性

Abstract:

Keywords:

基金项目(Foundation): 国家“863”计划资助项目(2002AA331050);; 教育部科学技术研究重大资助项目(0208)

作者(Author): 刘宏,陈扬,赵刚,刘春明,左良

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