| 时效处理对铸轧7050铝合金组织和性能的影响 |
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| 引用本文： | 王洪斌,马鹏程,赵红阳,蔡元华,张济山. 时效处理对铸轧7050铝合金组织和性能的影响[J]. 材料热处理学报, 2011, 32(10) |
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| 作者姓名： | 王洪斌 马鹏程 赵红阳 蔡元华 张济山 |
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| 作者单位： | 1. 辽宁科技大学材料与冶金学院,辽宁鞍山,114051
2. 北京科技大学新金属材料国家重点实验室,北京,100083 |
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| 基金项目： | 新金属材料国家重点实验室开放基金(2009Z-03); 辽宁省教育厅重点实验室项目基金(LS2010088) |
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| 摘 要： | 采用透射电镜、X射线衍射、硬度测试等实验方法,研究了不同时效处理工艺对铸轧7050铝合金组织和性能的影响。结果表明：随着单级时效温度的升高,合金达到峰值硬度所需的时间缩短,合金的峰值硬度降低,晶内和晶界析出相也随温度的提高发生不同程度的长大;双级时效时,晶内有较多粗大的析出相,晶界析出相已不再连续且已经发生长大,晶界无沉淀带更加明显;回归再时效处理时,晶内析出相与单级时效时相比发生粗化,晶界上为断续的粗大长条状析出物,无偏析带加宽。
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| 关 键 词： | 时效处理 铸轧 7050铝合金 析出物 维氏硬度 |
Effect of aging treatments on microstructure and properties of cast-rolled 7050 aluminum alloy |
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| WANG Hong-bin,MA Peng-cheng,ZHAO Hong-yang,CAI Yuan-hua,ZHANG Ji-shan. Effect of aging treatments on microstructure and properties of cast-rolled 7050 aluminum alloy[J]. Transactions of Materials and Heat Treatment, 2011, 32(10) |
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| Authors: | WANG Hong-bin MA Peng-cheng ZHAO Hong-yang CAI Yuan-hua ZHANG Ji-shan |
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| Affiliation: | WANG Hong-bin1,MA Peng-cheng1,ZHAO Hong-yang1,CAI Yuan-hua2,ZHANG Ji-shan2(1.School of Material and Metallurgy,University of Science and Technology Liaoning,Anshan 114051,China,2.State Key Laboratory for Advanced Metals and Materials,University of Science and Technology Beijing,Beijing 100083,China) |
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| Abstract: | Microstructure and properties of cast-rolled 7050 aluminum alloy by different aging treatments were analyzed by means of transmission electron microscopy(TEM),X-ray diffraction(XRD),Vickers hardness test.Results show that for single aging treatment,when aging temperature increases,the time reaching to peak hardness decreases and the lower peak hardness is obtained,and the precipitates in grains and at grain boundary also grows up with increase of the temperature.For double aging treatment,many coarser preci... |
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| Keywords: | aging treatment cast-rolling 7050 aluminum alloy precipitate phases Vickers hardness |
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