| Grain Refining Performance of SHS Al—50TiC Master Alloys for Commercially pure Aluminum |
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| 引用本文： | YANYou－wei FUZheng－yi 等.Grain Refining Performance of SHS Al—50TiC Master Alloys for Commercially pure Aluminum[J].武汉理工大学学报(材料科学英文版),2002,17(3):13-16. |
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| 作者姓名： | YANYou－wei FUZheng－yi |
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| 作者单位： | YAN You wei FU Zheng yi YUAN Run zhang Huazhong University of Science and Technology State Key Lab of Die & Mould Technology，Huazhong University of Science and Technology，Wuhan 430074，China. |
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| 基金项目： | FinanciallysupportedbytheFoundationforExcellentYouthsofWuhanCity (No .2 0 0 15 0 0 5 0 2 8) |
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| 摘 要： | An Al-50wt^TiC composite was directly synthesized by self-propagating high-temperature synthesis(SHS) technology,and then was used as a grain refining master alloy for commercially pure aluminun.The microstructure and grain refining performance of the synthesized master alloy were emphatically investigated.The SHS master alloy only ocntained submicron TiC particles except for Al matrix.Moreover,TiC particles were relatively free of agglomeration.Grain refining tests show that adding only 0.1wt^ of the master alloys to the aluminum melt could transform the sturcture of the solidified samples from coarse columnar grains to fine almost 1.5h at 1003K.Therefore,it is concluded that the SHS master alloy is an effective grain refiner for aluminum and its alloys,and that it is highly resistant to the grain refining fading encountered with most grain refiners.
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| 关 键 词： | SHS Al－TiC 铝合金 精练 碳化钛 显微组织 |
| 收稿时间： | 20 October 2001 |
Grain refining performance of SHS Al-50TiC master alloys for commercially pure aluminum |
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| Yan You-wei Ph D,Fu Zheng-yi,Yuan Run-zhang.Grain refining performance of SHS Al-50TiC master alloys for commercially pure aluminum[J].Journal of Wuhan University of Technology. Materials Science Edition,2002,17(3):13-16. |
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| Authors: | Yan You-wei Ph D Fu Zheng-yi Yuan Run-zhang |
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| Affiliation: | (1) State Key Lab of Die & Mould Technology, Huazhong University of Science and Technology, 430074 Wuhan, China |
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| Abstract: | An Al-50wt% TiC composite was directly synthesized by self-propagating high-temperature synthesis (SHS) technology, and then
was used as a grain refining master alloy for commercially pure aluminum. the microstructure and grain refining performance
of the synthesized master alloy were emphatically investigated. The SHS master alloy only contained submicron TiC particles
except for Al matrix. Moreover, TiC particles were relatively free of agglomeration. Grain refining tests show that adding
only 0.1 wt% of the master alloys to the aluminum melt could transform the structure of the solidified samples from coarse
columnar grains to fine equiaxed grains (average grain size 120 μm), and that this grain refining effectiveness could be maintained
for almost 1. 5h at 1003 K. Therefore, it is concluded that the SHS master alloy is an effective grain refiner for aluminum
and its alloys, and that it is highly resistant to the grain refining fading encountered with most grain refiners.
Yan You-wei: Born in 1965
Financially supported by the Foundation for Excellent Youths of Wuhan City (No. 20015005028). |
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| Keywords: | SHS Al TiC composite grain refiner microstructure grain refinement |
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