Microstructure of A1-5Ti-0.6C-1Ce master alloy and its grain-refining performance

被引：8
作者：
Ding, Wanwu [1 ,2 ]
Zhang, Xiaoyu [1 ,2 ]
Zhao, Wenjun [1 ,2 ]
Xia, Tiandong [1 ,2 ]
机构：
[1] Lanzhou Univ Technol, Sch Mat Sci & Engn, Lanzhou 730050, Gansu, Peoples R China
[2] State Key Lab Gansu Adv Non Ferrous Met Mat, Lanzhou, Gansu, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2015年 / 106卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Al-Ti-C-Ce; Microstructure; Grain refinement; Commercially pure aluminum; PURITY ALUMINUM; AL; REFINEMENT; EFFICIENCY; TITANIUM;
D O I：
10.3139/146.111300
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Al-5Ti-0.6C-1Ce master alloy has been successfully prepared by a method of thermal explosion reaction in pure molten aluminum. The microstructure of the alloy was characterized by means of optical microscopy, X-ray diffraction and scanning electron microscopy equipped with energy-dispersive spectrometry. The results showed that the Al-5Ti-0.6C-1Ce alloy was composed of alpha-Al, granular TiC, lump-like TiAl3 and block-like Ti2Al20Ce. When compared with the Al-5Ti-0.6C master alloy, the formation of Ti2Al20Ce compounds and the addition of Ce accelerated the formation of TiC. An excellent grain-refining performance was obtained when the addition level of Al-5Ti-0.6C-1Ce reached 0.5 wt.%. The effect of Ce on the synthesis of TiC and refinement mechanism of Al-5Ti-0.6C-1Ce has also been discussed.
引用
收藏
页码：1240 / 1243
页数：4
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