本文讨论了热扩散反应法制备Al-TiO2-C系铝基复合材料的反应机理及拉伸性能.热力学分析表明Al-TiO2-C系的合成反应是放热并可自发进行,反应产物中α-Al2O3生成自由能最低,热力学最稳定,当温度高于500K时,TiC优先于Al4C3生成.实验结果表明,当C/TiO2摩尔比为零时,增强体由α-Al2O3和Al3Ti组成,α-Al2O3为细小颗粒,呈偏聚状态,Al3Ti呈棒状,分布相对均匀.随着C/TiO2摩尔比的增加,Al3Ti逐渐减少,在C/TiO2摩尔比等于1时,Al3Ti基本消失,反应产物中未见Al4C3相,其拉伸性能也随之得到改善,拉伸强度和延伸率分别从273.4MPa和3%上升到350.7MPa和6%.
参考文献
| [1] | Merzhanov A G .Review paper:History and recent development in SHS[J].Ceramics International,1995,21:371-379. |
| [2] | Merzhanov A G .Worldwide evolution and present status of SHS as a branch of modem R&D[J].International Journal of Self-Propagating High-Temperature Synthesis,1997,6(02):119-163. |
| [3] | Ranganath S .A review on particulate-reinforced titanium matrix composites[J].Journal of Materials Science,1997,32:1-16. |
| [4] | 朱和国 .Al-TiO2-X及Al-Fe203系原位反应合成复合材料的研究[D].南京:东南大学,2003. |
| [5] | 王武孝,袁森,夏明许,马红萍.Cu2O-Al体系的化学反应机理[J].金属学报,2002(04):403-406. |
| [6] | 朱和国,王恒志,孙强金,吴申庆.Al-TiO2-B系XD合成铝基复合材料的力学性能[J].材料科学与工程学报,2005(01):8-11. |
| [7] | Tjong SC.;Ma ZY. .Microstructural and mechanical characteristics of in situ metal matrix composites [Review][J].Materials Science & Engineering, R. Reports: A Review Journal,2000(3/4):49-113. |
| [8] | 朱和国,王恒志,熊党生,吴申庆.用XD法合成的铝基复合材料的组织与力学性能[J].金属学报,2005(08):829-834. |
| [9] | 赵玉涛 .Al-ZrO2系铝基复合材料的制备及性能研究[D].南京:东南大学,2001. |
| [10] | 杨波,张二林,曾松岩,戴圣龙,刘伯操.Al-TiO2-C体系燃烧过程的研究与计算机模拟[J].中国有色金属学报,2001(05):846-851. |
| [11] | 叶大伦;胡建华.实用无机物热力学数据手册[M].北京:冶金工业出版社,2002:72. |
| [12] | Nakata H.;Kanetake N.;Choh T. .FABRICATION AND MECHANICAL PROPERTIES OF IN SITU FORMED CARBIDE PARTICULATE REINFORCED ALUMINIUM COMPOSITE[J].Journal of Materials Science,1995(7):1719-1727. |
| [13] | Naidich Y V;Chubashov Y N .Observation·carbon dissolve in Al alloy[J].Metallurgiya,1983,3:67-71. |
| [14] | Eustathopoulos N;Joud J C;Desre P .Discussion of Al4C3 in Al alloy[J].Materials Science and Engineering,1974,9:1233-1239. |
| [15] | 姜文标;刘友鹏;舒光冀 .铝液对石墨润湿过程的研究[J].金属学报,1988,24B:146-149. |
| [16] | Dorward R C .Discussion of"comments on the solubility of carbon in molten aluminum"[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1990,21A:255-257. |
| [17] | 杨滨,王锋,段先进,张济山,陈国香.熔铸-原位反应喷射成形7075/TiC复合材料的拉伸性能[J].金属学报,2001(03):311-314. |
| [18] | Garcia E;Janssen R .Effect of heating rate on grain morphology of in situ reinforced reaction bonded aluminum niobate-based composites[J].Journal of Materials Science,1999,34:769-771. |
| [19] | Z. Y. CHEN;Y. Y. CHEN;Q. SHU .Solidification and interfacial structure of in situ Al-4.5Cu/TiB_(2) composite[J].Journal of Materials Science,2000(22):5605-5608. |
| [20] | 王自东;胡汉起;李春玉 等.金属基"内晶型"复合材料及其制备[J].金属学报,1995,31:40-41. |
| [21] | Shangguan D;Ahuja S;Stefanescu D M .An analytical model for the interaction between an insoluble particle and an advancing solid/liquid interface[J].Metallurgical and Materials Transactions A:Physical Metallurgy and Materials Science,1992,23:669-674. |
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%