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Improvement of Morphology of Fe-Riched Phase in Commercial Pure Aluminum by Ce-Riched Rare Earth Modification
Author(s): 
Pages: 318-322
Year: Issue:  3
Journal: JOURNAL OF THE CHINESE RARE EARTH SOCIETY

Keyword:  工业纯铝富铁相变质稀土;
Abstract: 利用金相分析方法研究了富Ce混合稀土变质对含不同Fe量的工业纯铝的组织和其中富铁相形貌的影响.试验结果表明, 随着Fe含量的增加, 富铁相由弥散细小的颗粒状向短棒状、长针状转变;富Ce混合稀土变质使铝中的富铁相由长针状变为弥散细小的颗粒状.随着稀土含量的增加, α-Al晶粒逐渐细化, 富铁相尺寸及数量逐渐减小.添加0.5%稀土时, α-Al晶粒细化效果最佳, 而且富铁相呈细小颗粒状均匀分布在α-Al基体的晶界处.本文还对稀土改善富铁相的机制进行了分析.
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