| 一种Al-Mg-Si-Cu-Mn合金铸态及均匀化退火组织研究 |
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| 引用本文： | 曾庆委,文玉华,熊计.一种Al-Mg-Si-Cu-Mn合金铸态及均匀化退火组织研究[J].热加工工艺,2009,38(18). |
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| 作者姓名： | 曾庆委 文玉华 熊计 |
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| 作者单位： | 四川大学制造科学与工程学院,四川,成都,610065 |
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| 摘 要： | 采用金相显微镜(OM)及能谱仪(EDS),研究了Al-0.9Mg-0.9Si-0.6Cu-0.6Mn合金的铸态及其均匀化后的组织,并对合金的铸态组织及均匀化退火过程中相的演化进行了分析.结果表明:合金的铸态组织中存在大量的网状化合物和球状析出物,分别是α-Al+Ai(MnFe)3Si2的共品体和富铜相.均匀化退火过程中,随均匀化退火温度的升高,网状结构α-Al+Al(MnFe)3Si2的共晶体逐渐变成球状细小颗粒Al(MnFe)3Si2相,材料的微观组织得到改善.经560℃×6 h退火,均匀化过程基本完成,品粒未发生明显的粗化.
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| 关 键 词： | Al-Mg-Si-Cu-Mn合金 微观组织 均匀化退火 共晶体 |
Study on Microstructure of Al-Mg-Si-Cu-Mn Alloy As-cast and Homogenized Annealing |
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| ZENG Qingwei,WEN Yuhua,XIONG Ji.Study on Microstructure of Al-Mg-Si-Cu-Mn Alloy As-cast and Homogenized Annealing[J].Hot Working Technology,2009,38(18). |
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| Authors: | ZENG Qingwei WEN Yuhua XIONG Ji |
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| Abstract: | The microstructures of Al-Mg-Si-Cu-Mn alloy as-cast and homogenized annealing were studied using OM and EDS. The results show that lots of reticular phase compounds and spherical precipitates, exist in microstructure as-cast which are α-Al+Al (MnFe)_3Si_2 eutectic and phases enriched in copper. In the process of homogenizing annealing, α-Al+Al(MnFe)_3Si_2 eutectic turn into small spherical particle Al(MnFe)_3Si_2 phase with the increase of annealing temperature, resulting in microstructures improvement. Annealed at 560℃ for 6 h, the homogenizing process is substantially completed and the obvious growth of grains does not occur. |
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| Keywords: | Al-Mg-Si-Cu-Mn alloy microstructure homogenization annealing eutectic |
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