有色金属材料与工程2016，Vol.37Issue(5)：206-211,6.DOI:10.13258/j.cnki.nmme.2016.05.004
5383铝合金铸锭偏析行为及均匀化制度的研究
Study on Segregation Behavior and Homogenizing Treatment for 5383 Aluminum Alloy Ingot
沈富荣 1罗兵辉2
作者信息
- 1. 上海沪光变压器有限公司, 上海 200001
- 2. 中南大学 材料科学与工程学院, 湖南 长沙 410083
- 折叠
摘要
Abstract
The composition distribution and the intergranular phase microstructure of 5383 aluminum alloy were investigated by scanning electron microscopy(SEM),X-ray diffractometry(XRD),and transmission electron microscope(TEM),and the influence of homogenizing to segregating behavior and evolution of the microstructure was analyzed.The results show that the segregation on Mg,Cu and Mn elements and many eutectic phases with low melting-point exist in the 5383 aluminum alloy microstructure at the grain boundary,most of metallic intergranular phase along the grain boundary in network.The non-equilibrium eutectic phases dissolved after homogenization,and the grain boundary became sparse and all elements became more homogenized.The grains grow up and transformed into nodular,a large number of small precipitates phase near grain boundary and dislocation.Combined with experimental analysis and calculation results of homogenization dynamics equation,the proper homogenizing process of the 5383 aluminum alloy is 480-490 ℃,24 h,and the overburnt temperature is 506 ℃.关键词
5383铝合金/偏析/均匀化/微观组织/动力学Key words
5383 aluminum alloy/segregation/homogenization treatment/microstructure/kinetics分类
矿业与冶金引用本文复制引用
沈富荣,罗兵辉..5383铝合金铸锭偏析行为及均匀化制度的研究[J].有色金属材料与工程,2016,37(5):206-211,6.
