热、冷形变对5456铝合金组织和性能的影响
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摘要
研究热变形和冷变形对5456铝合金组织和性能的影响.通过实验探索发现,热变形可以显著降低β相尺寸,随着冷变形率的增大,5456铝合金的耐晶间腐蚀性较好,可以达到介敏感级,而剥落腐蚀性下降明显.测试结果对船舶用高镁铝合金的应用方面提供一定的参考价值.
The effect of hot working and cold working on structure and properties of 5456 aluminum-alloy are researched.For the research of the experiment,with the increases of hot working rate,the size of βphase decreased.With the increases of cold working rate,the intergranular corrosion of 5456 aluminum-alloy gets up to 2 level.But with the increases of cold working rate,the exfoliation corrosion for Al-Mg alloy with high Mg content decreases obviously.The results of the experiment offer also some reference value for High Magnesium Aluminum-Alloy of the Marine Service.
The effect of hot working and cold working on structure and properties of 5456 aluminum-alloy are researched.For the research of the experiment,with the increases of hot working rate,the size of βphase decreased.With the increases of cold working rate,the intergranular corrosion of 5456 aluminum-alloy gets up to 2 level.But with the increases of cold working rate,the exfoliation corrosion for Al-Mg alloy with high Mg content decreases obviously.The results of the experiment offer also some reference value for High Magnesium Aluminum-Alloy of the Marine Service.
引文
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[3]田荣璋,王祝堂.铝合金及其加工手册[M].2版,长沙:中南大学出版社,2000.
[4]Popovic M,Rpmhanji E.Stress corrosion cracking susceptibility of Al-Mg alloy sheet with high Mg content[J].Journal of Materials Processing,2002(125-126):275-280.
[5]M J Starink,A M ZAHRA.β'andβprecipitiation in an Al-Mg alloy studied by DSC and TEM[J].1998,46(10):3381-3397.
[6]M.Bournane,M.Nedjar,A.F.Sirenko.Precipitaion in Solid Solutions of Al-Mg[J].Scripta Materialia,1999,40(3):375-382.
[7]M C Carroll,P I Gouma,M J Mills,et al.Effcets of Zn Additions on The Grain Boundary Precipitation And Corrosion of Al-5083[J].Scipta mater.2000(42):335-340.
[8]Zaki Ahrmad,Anwar Ul-Hamid,B.J.Abdul-Aleem.The Corrosin Behavior of Sandium Alloyed Al 5052 in Necutral Sodium Chloride Solution[J].Corrosion Science,2001(43):1227-1243.
[9]林汉卿.热处理工艺对5383铝合金组织和性能的影响[D].长沙:中南大学,2014.