采用激光引燃自蔓延高温合成技术制备Al-Ti-C中间合金,研究了改变激光辐照参数对合成Al-Ti-C 中间合金显微组织结构的影响,并用所制备的中间合金对工业纯铝进行细化试验.结果表明:激光辐照时间为1.0 s、功率控制在1000 W时,制备的Al-Ti-C中间合金生成TiAl3和TiC粒子弥散分布、TiAl_3直径在1.5 μm左右,TiC粒子直径为1 μm.向工业纯铝中加入0.1%的Al-Ti-C中间合金具有最佳的细化效果,细化后晶粒的尺寸为120 μm.
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 TiAl_3 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.
参考文献
| [1] | McCartney D G .[J].International Materials Reviews,1989,34(05):247. |
| [2] | Cibula A .[J].Journal of the Institute of Metals,1949,50(76):321. |
| [3] | Starink M J .[J].International Materials Reviews,2004,49(03):191. |
| [4] | Mondolfo L F.Aluminium Alloys:Structure and Properties[M].London:William Clowes & Sons Limited,1976:338. |
| [5] | Fan T X et al.[J].Journal of Materials Research,1999,34:5175. |
| [6] | Banerji A et al.[J].Metallurgical Transactions A,1986,17A:2127. |
| [7] | Nukami T;Flemings M C et al.[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1995,26A:1877. |
| [8] | Sato K;Flemings M C et al.[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29A:1707. |
| [9] | 张作贵,刘相法,边秀房.Al-Ti-C系中TiC形成的热力学与动力学研究[J].金属学报,2000(10):1025-1029. |
| [10] | 谭敦强,黎文献.温度对制备Al-Ti-C晶粒细化剂的影响[J].特种铸造及有色合金,2002(05):4-7. |
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