刘鑫刚,王国军,陈雷,孟冬凝,于琳琳,郭宝峰,毛天宏

• 1:先进锻压成形技术与科学教育部重点实验室燕山大学
• 2:燕山大学国家冷轧板带装备及工艺工程技术研究中心
• 3:鞍钢重型机械有限责任公司
• 4:中国第二重型机械集团德阳万航模锻有限责任公司

摘要(Abstract)：

借助DSC、SEM、EDS等手段分析了均匀化热处理工艺参数对6061铝合金组织与力学性能的影响规律。结果表明:铸态6061铝合金中析出相主要包括Mg_2Si、β-Al_5FeSi、β-Al5(FeMn)Si及少量的α-Al_(12)(FeMn)_3Si_2。随均匀化加热温度升高,铸态合金枝晶网状组织变得不连续,且基体逐渐析出大量弥散相。当均匀化温度超过580℃时,基体出现复熔球,即合金出现过烧现象。加热温度在550~590℃范围内,合金的强度和塑性随均匀化加热温度的升高,呈先增大后减小的趋势,在575℃时达到最佳值;延长保温时间,合金的强度增大,而塑性则先减小后增大。

关键词(KeyWords)： 6061铝合金;均匀化;显微组织;强度;塑性

Abstract:

Keywords:

基金项目(Foundation): 河北省科技支撑计划项目(14210311D);; 河北省高等学校创新团队领军人才培育计划(LJRC012)

作者(Author): 刘鑫刚,王国军,陈雷,孟冬凝,于琳琳,郭宝峰,毛天宏

DOI: 10.13289/j.issn.1009-6264.2016.07.012

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