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金属学报  2012, Vol. 48 Issue (3): 351-356    DOI: 10.3724/SP.J.1037.2011.00689
  论文 本期目录 | 过刊浏览 |
AA3104铝合金均匀化过程中的(Fe, Mn)Al6相向α-Al12(Fe, Mn)3Si相转变研究
张永皞, 张志清, Robert E. Sanders, 刘庆
重庆大学材料科学与工程学院, 重庆 400044
STUDY OF THE PHASE TRANSFORMATION FROM (Fe, Mn)Al6 TO α-Al12(Fe, Mn)3Si IN AA3104 ALUMINUM ALLOY DURING HOMOGENIZATION
ZHANG Yonghao, ZHANG Zhiqing, Robert E. SANDERS, LIU Qing
College of Materials Science and Engineering, Chongqing University, Chongqing 400044
全文: PDF(2332 KB)  
摘要: 采用SEM背散射电子(BSE)技术以及能谱(EDS)等手段定量研究了加热温度和保温时间对AA3104铝合金中(Fe, Mn)Al6相向α-Al12(Fe, Mn)3Si相转变作用规律, 通过连续截面方法对600 ℃保温条件下不同阶段的共晶相(即 (Fe, Mn)Al6相及α-Al12(Fe, Mn)3Si相)形貌进行三维重构, 从三维角度揭示了转化各阶段共晶相的三维形态. 对转变过程中标志性的铝点进行了定量表征, 结果表明在转化的不同阶段, 对应的铝点形貌特征也不尽相同, 在均匀化进行到一定阶段后, 大量铝点通过扩散而消失, 导致α相体积明显减小. 分析了转化后α相的微观形貌特征, 认为转化后存在的脆弱“双相”界面以及α相内部“疏松多孔”的状态, 将有助于其在轧制过程中的破碎.
关键词 AA3104铝合金均匀化共晶相相转变    
Abstract:The effect of heating temperature and holding time on the phase transformation from (Fe, Mn)Al6 to α-Al12(Fe, Mn)3Si in AA3104 aluminum alloy during homogenization was studied by BSE and EDS in SEM. The 3D morphology of the eutectic phases heated at 600 ℃ for different holding times was reconstructed by a novel serial sectioning method. Evolution of the microstructure could be revealed in 3D for the first time. Al spots were observed within the α-Al12(Fe, Mn)3Si phase and counted during different transformation stages. Large number of Al spots disappeared by diffusing into the neighboring matrix after extended heating times, while the volume of the α phase was also decreased at the same time. The microstructure of the α phase after transformation was analyzed, showing ‘duplex interfaces’created by partly transformed particles. The dense holes within α phase particles are believed to promote particle break up during hot rolling of the omogenized material.
Key wordsAA3104 aluminum alloy    omogenization    utectic phase    hase transformation
收稿日期: 2011-11-07     
ZTFLH: 

TG146.2

 
基金资助:

中央高校基本科研业务费资助项目CDJRC10130008

通讯作者: 刘庆     E-mail: qingliu@cqu.edu.cn
Corresponding author: LIU Qing     E-mail: qingliu@cqu.edu.cn
作者简介: 张永皞, 男, 1982年生, 博士生

引用本文:

张永皞 张志清 Robert E. Sanders 刘庆. AA3104铝合金均匀化过程中的(Fe, Mn)Al6相向α-Al12(Fe, Mn)3Si相转变研究[J]. 金属学报, 2012, 48(3): 351-356.
ZHANG Yong-Hao, ZHANG Zhi-Qing, LIU Qiang. STUDY OF THE PHASE TRANSFORMATION FROM (Fe, Mn)Al6 TO α-Al12(Fe, Mn)3Si IN AA3104 ALUMINUM ALLOY DURING HOMOGENIZATION. Acta Metall Sin, 2012, 48(3): 351-356.

链接本文:

https://www.ams.org.cn/CN/10.3724/SP.J.1037.2011.00689      或      https://www.ams.org.cn/CN/Y2012/V48/I3/351

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