| Effect of high-temperature pre-precipitation on microstructure and properties of 7055 aluminum alloy |
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| 作者姓名： | 陈康华 黄兰萍 |
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| 作者单位： | State Key Laboratory for Powder Metallurgy，State Key Laboratory for Powder Metallurgy Central South University，Changsha 410083，China，Central South University，Changsha 410083，China |
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| 摘 要： | 1 INTRODUCTIONAl Zn Mg Cuserieshigh strengthaluminumal loyswithhighstrength to densityratioandexcellentmechanicalpropertieshavebeentheprimarystruc turalmaterialsofaerocraftinthespaceandgroundtransportationvehicles.Thedevelopmentandexten siveutilizationofhigh strength 7xxxseriesareham peredby poorcorrosionresistance ,especiallystresscorrosioncracking (SCC )resistance .Overthe pastfewyears ,thestudiesaboutstresscorrosioncrackingandageingtreatmentprocesshavebeenproceedinginordertoobtainma…
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Effect of high-temperature pre-precipitation on microstructure and properties of 7055 aluminum alloy |
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| CHEN Kang hua,HUANG Lan ping.Effect of high-temperature pre-precipitation on microstructure and properties of 7055 aluminum alloy[J].Transactions of Nonferrous Metals Society of China,2003,13(4). |
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| Authors: | CHEN Kang hua HUANG Lan ping |
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| Abstract: | The near solvus pre precipitation following higher temperature solution treatment was performed on 7055 aluminum alloy. The effect of the pre precipitation on the microstructure, age hardening and stress corrosion cracking of 7055 alloy was investigated. The optical and transmission electron microscopy results show that the near solvus pre precipitation can be limited to grain boundary and enhance the discontinuity of grain boundary precipitates in the sequent age. The stress corrosion cracking resistance of aged 7055 alloys could be improved with non deteriorated strength and plasticity via the pre precipitation. |
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| Keywords: | 7055 aluminum alloy stress corrosion precipitation solution |
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