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輻照參數(shù)對激光引燃自蔓延合成Al-Ti-C中間合金的影響
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國家自然科學(xué)基金（50704009）；遼寧省博士啟動基金（20031081）


Influence of Irradiation Parameters on Microstructures of Al-Ti-C Master Alloys by Laser-Induced Self-Propagating High-Temperature Synthesis (SHS)
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    摘要:

    采用激光引燃自蔓延高溫合成技術(shù)制備Al-Ti-C中間合金，研究了改變激光輻照參數(shù)對合成Al-Ti-C 中間合金顯微組織結(jié)構(gòu)的影響，并用所制備的中間合金對工業(yè)純鋁進(jìn)行細(xì)化試驗。結(jié)果表明：激光輻照時間為1.0 s、功率控制在1000 W時，制備的Al-Ti-C中間合金生成TiAl3和TiC粒子彌散分布、TiAl3直徑在1.5 μm左右，TiC粒子直徑為1 μm。向工業(yè)純鋁中加入0.1%的Al-Ti-C中間合金具有最佳的細(xì)化效果，細(xì)化后晶粒的尺寸為120 μm。

    Abstract:

    Al-Ti-C master alloys were prepared by laser-induced self-propagating high-temperature synthesis (SHS). The influence of different irradiation parameters of the laser on the microstructure of synthesized product was investigated, and the refinement effect of the obtained master alloy for commercially pure aluminium is also evaluated. The results show that the laser irradiation parameters have significant influence on the microstructure of the Al-Ti-C master alloys. Under the condition of the laser irradiation time 1.0 s and the power in 1000 W, the microstructures of prepared Al-Ti-C master alloys are composed of the granular TiAl3 and TiC, which are dispersive. The diameter of TiC is about 1 μm, and that of the granular TiAl3 is about 1.5 μm. The 0.1% addition of this master alloy to the molten commercially pure aluminium is most excellent; the average grain size is 120 μm after refinement.

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莊洪宇,潘學(xué)民.輻照參數(shù)對激光引燃自蔓延合成Al-Ti-C中間合金的影響[J].稀有金屬材料與工程,2010,39(1):46~49.[Zhuang Hongyu, Pan Xuemin. Influence of Irradiation Parameters on Microstructures of Al-Ti-C Master Alloys by Laser-Induced Self-Propagating High-Temperature Synthesis (SHS)[J]. Rare Metal Materials and Engineering,2010,39(1):46~49.]
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  • 收稿日期:2009-01-19
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