| 原位合成(TiB+Al2O3)/Ti复合材料 |
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| 引用本文： | 吕维洁,杨志峰,张荻,吴人洁.原位合成(TiB+Al2O3)/Ti复合材料[J].铸造,2002,51(5):277-279. |
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| 作者姓名： | 吕维洁 杨志峰 张荻 吴人洁 |
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| 作者单位： | 上海交通大学金属基复合材料国家重点实验室,上海,200030 |
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| 基金项目： | S国家自然科学基金重点项目(59631080)和上海市科委新材料中心项目行 |
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| 摘 要： | 应用热力学 ,分析了Ti与B2 O3 、Al之间的化学反应原位合成TiB和Al2 O3 增强的钛基复合材料的合成机理。设计了普通的非自耗电弧熔炼工艺制备该钛基复合材料。借助X射线衍射仪 (XRD)和扫描电镜 (SEM )分析了原位合成复合材料的物相和增强体的形态。结果表明 :原位合成的增强体确实为TiB和Al2 O3 。增强体在基体合金上分布较为均匀 ,增强体形状为短纤维状。原位合成增强体的加入显著提高了钛基复合材料的洛氏硬度。
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| 关 键 词： | 原位复合材料 钛基复合材料 钛合金 TiB Al2O3 |
| 文章编号： | 1001-4977(2002)05-0277-03 |
| 修稿时间： | 2001年9月21日 |
In Situ Fabrication of (TiB+Al2O3)/Ti Matrix Composites |
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| LU Wei-jie,YANG Zhi-feng,ZHANG Di,WU Ren-jie.In Situ Fabrication of (TiB+Al2O3)/Ti Matrix Composites[J].Foundry,2002,51(5):277-279. |
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| Authors: | LU Wei-jie YANG Zhi-feng ZHANG Di WU Ren-jie |
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| Abstract: | Synthesis mechanism of TiB and Al_2O_3 reinforced titanium matrix composites in situ fabricated by using the chemical reaction between Ti, Al and B_2O_3 was investigated by thermodynamic theory. A common non-consumable arc-melting technology was designed to produce the titanium matrix composites. Phase identification and microstructure observation of the composites were performed by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results show that in situ synthesized reinforcements are TiB and Al_2O_3. Reinforcements are distributed uniformly in the matrix alloy. The shapes of reinforcements are short fibrous. The in situ synthesized reinforcements improves the HRC value of the composites obviously. |
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| Keywords: | in situ composite titanium matrix composite titanium alloy Ti TiB Al_2O_3 |
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