| Synthesis of TiAl-Al2O3 composites by high energy milling and hot-press sintering |
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| 作者姓名： | 朱建锋 高积强 王芬 |
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| 作者单位： | [1]State Key Laboratory for Mechanical Behavior of Materials, Xi＇an Jiaotong University, Xi＇an 710049, China [2]School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xianyang 712081, China |
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| 基金项目： | Foundation item： Projects（50432010, 50372037） supported by the National Natural Science Foundation of China; project（SUST-B14） supported by the Scientific Research Foundation of Shaanxi University of Science and Technology, China |
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| 摘 要： | A sub-microstructure titanium aluminide alloy/Al2O3 （3A） composite was obtained by crystallization of the amorphous powders, which were prepared by mechanical alloying （MA） in a planetary ball milling system using Ti-AI-TiO2 as raw materials. The experimental results show that, when the milling time increases up to 30 h, the hep Ti（Al） supersaturated solid solution disappears, only amorphous phase is left. The compact samples were synthesized by hot-press to 1 200 ℃ with the amorphous as a precursor; the final phases of the matrix and strengthened phase are y-TiAl and Al2O3. The phases come from in situ crystallization and transformation. The samples, fabricated from the amorphous phase by hot press sintering, have high bending strength and fracture toughness.
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| 关 键 词： | 钛 铝 金属合成 金属化合物 机械性能 晶体结构 有色金属 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Synthesis of TiAl-Al2O3 composites by high energy milling and hot-press sintering |
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| ZHU Jian-feng, GAO Ji-qiang, WANG Fen.Synthesis of TiAl-Al2O3 composites by high energy milling and hot-press sintering[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):2055-2057. |
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| Authors: | ZHU Jian-feng GAO Ji-qiang WANG Fen |
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| Abstract: | |
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| Keywords: | titanium aluminide intermetallics Al2O3 composite mechanical alloying crystallization |
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