The fabrication of AlN-TiC/Al composites by carbon-and nitrogen-containing gas injection into Al-Mg-Ti melts was studied. It was shown that AlN and TiC particles could be formed by the in situ reaction of mixture gas (N2+C2H2+NH3) with Al-Mg-Ti melts. The condition for the formation of AlN was that the treatment temperature must be higher than 1373 K, and the amounts of AlN and TiC increased with the increase of the treatment temperature and the gas injection time.It was considered that AlN was formed by the direct reaction of Al with nitrogen-containing gas at the interface of the gas bubble and the melt. However, the mechanism of TiC formation is a combination mechanism of solution-precipitation and solid-liquid reaction.
参考文献
| [1] | Hou Q H M;Koczak M .Feasibility of aluminum nitride formation in aluminum alloys[J].Material Science and Engineering,1995,A195:121. |
| [2] | Sahoo P;Koczak M J .Microstructure-property relationships of in situ reacted TiC/Al-Cu metal matrix composites[J].Material Science and Engineering,1991,A131:69. |
| [3] | Sahoo P;Koczak M J .Analysis of in situ formation of titanium carbide in aluminum alloys[J].Material Science and Engineering,1991,A144:37. |
| [4] | Premkumar MK.;Chu MG. .AL-TIC PARTICULATE COMPOSITE PRODUCED BY A LIQUID STATE IN SITU PROCESS[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,1995(1/2):172-178. |
| [5] | Daniel B S S;Murthy V S R;Murty G S .Metal-ceramic composites via in situ methods[J].Journal of Materials Processing Technology,1997,68:132. |
| [6] | Tjong S C;Ma Z Y .Microstructure and mechanical characteristics of in situ metal matrix composites[J].Material Science and Engineering,2000,29:49. |
| [7] | Koczak M J;Kumar K S .In situ process for producing a composite containing refractory material[P].US 4808372,1989. |
| [8] | Cui C X;Wu R J .In situ preparation of AlN and TiC particulates reinforced A1 matrix composite[J].Acta Metallurgica Sinica,1996,32(01):101. |
| [9] | Chu M G;Preemkumar M K .Mechanism of TiC formation in Al/TiC in situ metal-matrix composites[J].METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,1993,24:2803. |
| [10] | Kennedy A.R.;Weston D.P. .REACTION IN Al-Ti-C POWDERS AND ITS RELATION TO THE FORMATION AND STABILITY OF TiC IN Al AT HIGH TEMPERATURES[J].Scripta materialia,2000(12):1187-1192. |
| [11] | Nukami T;Flemings M C .In situ synthesis of TiC particulate-reinforced aluminum matrix composites[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1995,26:1877. |
| [12] | Tong X C;Fang H S .Al-TiC composites in situ processed by ingot metallurgy and rapid solidification technology:part 1,microstructure evolution[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1998,29:875. |
| [13] | Yu J Q.Binary alloy phase diagram[M].北京:冶金工业出版社,1987 |
| [14] | Khatri A;Koczak M .Formation of TiC in in situ processed composites via solid-gas,solid-liquid and gas reaction in molten Al-Ti[J].Material Science and Engineering,1993,A162:153. |
| [15] | Rapp R A;Zheng X J .Thermodynamic consideration of grain refinement of aluminum alloys by titanium and carbon[J].METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE,1991,22:3071. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%