| 2124铝合金的均匀化热处理 |
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| 引用本文： | 李成侣,潘清林,刘晓艳,何运斌,李文斌.2124铝合金的均匀化热处理[J].中国有色金属学报,2010,20(2). |
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| 作者姓名： | 李成侣 潘清林 刘晓艳 何运斌 李文斌 |
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| 作者单位： | 中南大学,材料科学与工程学院,长沙,411083 |
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| 摘 要： | 采用光学显微镜、差热分析、扫描电镜、能谱分析、透射电镜和X射线衍射研究2124铝合金铸态与均匀化态的显微组织演化和成分分布.结果表明:2124铝合金的铸态组织枝晶偏析严重,在晶界存在很多低熔点共晶相,合金中元素Cu,Mg和Mn在晶内及晶界分布不均匀;经过均匀化处理后,2124铝合金组织中的非平衡相逐渐溶解,各组元分布趋于均匀;该合金的过烧温度为504 ℃,最佳均匀化制度为(490 ℃,24 h),该制度与均匀化动力学方程得到的结论基本一致.
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| 关 键 词： | 2124铝合金 均匀化处理 显微组织 动力学 |
Homogenizing heat treatment of 2124 aluminum alloy |
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| LI Cheng-lü,PAN Qing-lin,LIU Xiao-yan,HE Yun-bin,LI Wen-bin.Homogenizing heat treatment of 2124 aluminum alloy[J].The Chinese Journal of Nonferrous Metals,2010,20(2). |
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| Authors: | LI Cheng-lü PAN Qing-lin LIU Xiao-yan HE Yun-bin LI Wen-bin |
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| Abstract: | The evolution of the microstructure and the composition distribution of as-cast and homogenized 2124 aluminum alloy were studied by optical microscopy (OM), differential scanning calorimetry (DSC), scanning electron microscopy (SEM), energy dispersive X-ray diffractometry (EDX), transmission electron microscopy (TEM) and X-ray diffractometry (XRD). The results show that serious dendrite segregation exists in the 2124 alloy ingot, and many eutectic phases with low melting-point exist in the grain boundary. C... |
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| Keywords: | 2124 aluminum alloy homogenization treatment microstructure kinetics |
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