车体承重用铝合金型材性能研究
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摘要
研究了一种车体承重用7xxx系铝合金型材的在线淬火与双级时效工艺。结果表明,淬火方式(风冷与水雾)对合金力学性能影响较小,时效制度对力学性能影响较大;合金力学性能与导电率随二级时效时间增加而提高,提高速率逐渐降低; 105℃×6h+155℃×10h时效可获得优良的综合性能。
In this paper,an on-line quenching and two-stage aging process of aluminum alloy profile for automotive body bearing is studied.The results show that the quenching mode(air cooling and water-fog cooling)has little influence on the mechanical properties;the aging system has great influence on the mechanical properties.The mechanical properties and conductivity of alloy are increased with the increase of two aging time,the rate of increase is decreased gradually;the excellent comprehensive properties can be obtained at 105℃×6h+155℃×10h aging way.
In this paper,an on-line quenching and two-stage aging process of aluminum alloy profile for automotive body bearing is studied.The results show that the quenching mode(air cooling and water-fog cooling)has little influence on the mechanical properties;the aging system has great influence on the mechanical properties.The mechanical properties and conductivity of alloy are increased with the increase of two aging time,the rate of increase is decreased gradually;the excellent comprehensive properties can be obtained at 105℃×6h+155℃×10h aging way.
引文
[1]李念奎,凌杲,聂波,刘静安,等.铝合金材料及其热处理技术[M].北京,冶金工业出版社,2014.
[2]刘静安,谢水生.铝合金材料的应用技术开发[M].北京:冶金工业出版社. 2004.
[3]王刚,孙一苇,朱伟忠,徐群峰,等.轻量化汽车承载用铝合金挤压型材的研制[J].轻合金加工技术,2011,39(2):36? 39.
[4]金龙兵,赵刚,冯正海,等.高速列车用中强可焊Al-Zn-Mg合金材料[J].轻合金加工技术,2010,38(12):47? 51.
[5]陈小明,宋仁国,李杰,等. 7xxx系铝合金的研究现状及发展趋势[J].材料导报,2009,23(2):67-70.
[6]王学书,聂波,谢延翠.热处理对7075铝合金电导率的影响[J].轻合金加工技术,2001,(07):40-42+49.
[2]刘静安,谢水生.铝合金材料的应用技术开发[M].北京:冶金工业出版社. 2004.
[3]王刚,孙一苇,朱伟忠,徐群峰,等.轻量化汽车承载用铝合金挤压型材的研制[J].轻合金加工技术,2011,39(2):36? 39.
[4]金龙兵,赵刚,冯正海,等.高速列车用中强可焊Al-Zn-Mg合金材料[J].轻合金加工技术,2010,38(12):47? 51.
[5]陈小明,宋仁国,李杰,等. 7xxx系铝合金的研究现状及发展趋势[J].材料导报,2009,23(2):67-70.
[6]王学书,聂波,谢延翠.热处理对7075铝合金电导率的影响[J].轻合金加工技术,2001,(07):40-42+49.