固溶处理对6xxx/7xxx铝合金复合板材组织和性能的影响
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摘要
通过显微组织观察、力学性能测试等方法研究了固溶处理对6xxx/7xxx铝合金复合板材显微组织和性能的影响。结果表明:在470～510℃范围内,随着固溶温度的升高和固溶时间的延长,包覆层合金中的粗大相逐渐溶入基体中,固溶强化效果增强;而进一步提高固溶温度或延长固溶时间,芯层合金晶粒逐渐长大,合金强度降低。6xxx/7xxx铝合金复合板材的最佳固溶处理工艺为495℃×40 min,在此条件下,获得的力学性能和阳极氧化性能较好。
Effect of solution treatment on microstructure and properties of 6 xxx/7 xxx aluminum alloy composite plate was investigated by means of microstructure observation and tensile test.The results show that the coarse phase particles dissolve gradually into the clad layer alloy matrix along with the increase of solution temperature and solution time in the range of 470-510 ℃,meanwhile,the solution strengthening effect is enhanced.The grains of the core layer alloy grow continuously when solution temperature or solution time further increases,resulting in the decrease of strength.The optimum solution treatment process of 6 xxx/7 xxx aluminum alloy composite plate is to heat at 495 ℃ for 40 min,and then,the composite plate can obtain preferable mechanical properties and anodic oxidation properties.
Effect of solution treatment on microstructure and properties of 6 xxx/7 xxx aluminum alloy composite plate was investigated by means of microstructure observation and tensile test.The results show that the coarse phase particles dissolve gradually into the clad layer alloy matrix along with the increase of solution temperature and solution time in the range of 470-510 ℃,meanwhile,the solution strengthening effect is enhanced.The grains of the core layer alloy grow continuously when solution temperature or solution time further increases,resulting in the decrease of strength.The optimum solution treatment process of 6 xxx/7 xxx aluminum alloy composite plate is to heat at 495 ℃ for 40 min,and then,the composite plate can obtain preferable mechanical properties and anodic oxidation properties.
引文
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[3]张德芬,谭盖,刘璐,等.热处理对6061铝合金组织与性能的影响[J].金属热处理,2015,40(11):184-187.Zhang Defen,Tan Gai,Liu Lu,et al.Effect of heat treatment on microstructure and mechanical properties of 6061 aluminum alloy[J].Heat Treatment of Metals,2015,40(11):184-187.
[4]马冬威,王敏,胡志华.固溶处理对7A09铝合金组织和力学性能的影响[J].金属热处理,2014,39(1):38-41.Ma Dongwei,Wang Min,Hu Zhihua.Effects of solid solution treatment on microstructure and mechanical properties of 7A09 aluminum alloy[J].Heat Treatment of Metals,2014,39(1):38-41.
[5]戴晓元,夏长清,刘昌斌,等.固溶处理及时效对7xxx铝合金组织与性能的影响[J].材料热处理学报,2007,28(4):59-63.Dai Xiaoyuan,Xia Changqing,Liu Changbin,et al.Effects of solution treatment and aging process on microstructure and mechanical properties of 7xxx aluminium alloy[J].Transactions of Materials and Heat Treatment,2007,28(4):59-63.
[6]何克准,黄淑萍,乐永康,等.固溶处理对7021铝合金组织与性能的影响[J].特种铸造及有色合金,2016,36(11):1211-1214.He Kezhun,Huang Shuping,Le Yongkang,et al.Effects of solution temperature on microstructure and mechanical properties of 7021aluminum alloy[J].Special Casting and Nonferrous Alloy,2016,36(11):1211-1214.
[7]焦少阳,董建新,张麦仓,等.双金属热轧复合的界面结合影响因素及结合机理[J].材料导报,2009,23(1):59-62.Jiao Shaoyang,Dong Jianxin,Zhang Maicang,et al.Influencing factors and bonding mechanism of hot rolling bonded bimetals[J].Materials Review,2009,23(1):59-62.
[8]刘海江,刘翠萍.铝合金复合板热轧生产及复合和钎焊机理浅析[J].轻合金加工技术,2004(3):23-24.Liu Haijiang,Liu Cuiping.Aluminium alloy complex plate hot rolling&compound and brazing mechanism[J].Light Alloy Fabrication Technology,2004(3):23-24.
[9]徐涛.热轧钎焊铝板带材复合工艺要点及复合机制[J].轻合金加工技术,2012,40(7):39-42.Xu Tao.Composite technology and mechanism of hot rolling brazing for aluminum strip[J].Light Alloy Fabrication Technology,2012,40(7):39-42.
[10]邓松云,蒋长标,莫灼强,等.3C用铝合金阳极氧化外观件砂眼缺陷的成因分析[J].有色金属加工,2018,47(3):43-46.Deng Songyun,Jiang Changbiao,Mo Zhuoqiang,et al.Causes analysis of sand-hole on 3C aluminum alloy anodized exterior parts[J].Nonferrous Metals Processing,2018,47(3):43-46.
[11]饶庆东,莫灼强,蒋秋妹,等.6063铝合金轧制板阳极氧化后表面黑线的成因分析[J].轻工科技,2018,34(8):118-119.