| TiB_2粒子增强Ti-Al基复合材料的合成机理 |
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| 引用本文： | 曲选辉,黄伯云,雷长明,陈仕奇,冯大林,欧少华.TiB_2粒子增强Ti-Al基复合材料的合成机理[J].中南大学学报(自然科学版),1993(4). |
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| 作者姓名： | 曲选辉 黄伯云 雷长明 陈仕奇 冯大林 欧少华 |
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| 作者单位： | 中南工业大学粉末冶金研究所，中南工业大学粉末冶金研究所，中南工业大学粉末冶金研究所，中南工业大学粉末冶金研究所，中南工业大学粉末冶金研究所，中南工业大学粉末冶金研究所 长沙，410083，长沙，410083，长沙，410083，长沙，410083，长沙，410083，长沙，410083 |
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| 基金项目： | Project supported by The High Technology Research and Development Programme of China |
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| 摘 要： | 采用Ti、Al和B元素粉末,经燃烧反应合成了TiB_2粒子增强的Ti Al金属间化合物基复合材料,并用DSC、EMPA和XRD等方法研究了其合成机理。结果发现,Ti和Al粉末间的放热反应促进了 TiB_2粒子的形成,所形成的 TiB_2粒子的尺寸约为2μm。将所得复合材料重熔后,TiB_2粒子的尺寸、相对含量和形貌没有明显变化,并且其显微组织比铸态Ti Al基合金组织明显细化。
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| 关 键 词： | 金属间化合物 Ti Al 复合材料 显微组织 |
SYNTHESIS MECHANISMS OF Ti-Al MATRIX COMPOSITES REINFORCED WITH TiB_2 PARTICLES |
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| Qu Xuanhui,Huang Baiyun,Lei Changming,Chen Shiqi,Feng Dalin,Ou Shaohua Powder Metallurgy Research Institute,Central South Univetsity of Technology,Changsha,China.SYNTHESIS MECHANISMS OF Ti-Al MATRIX COMPOSITES REINFORCED WITH TiB_2 PARTICLES[J].Journal of Central South University:Science and Technology,1993(4). |
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| Authors: | Qu Xuanhui Huang Baiyun Lei Changming Chen Shiqi Feng Dalin Ou Shaohua Powder Metallurgy Research Institute Central South Univetsity of Technology Changsha China |
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| Institution: | Qu Xuanhui,Huang Baiyun,Lei Changming,Chen Shiqi,Feng Dalin,Ou Shaohua Powder Metallurgy Research Institute,Central South Univetsity of Technology,Changsha,410083,China |
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| Abstract: | Ti Al intermetallic compound matrix composites reinforced with TiB_2 particles were fabricated by acombus-tion-reaction method from elemental Ti, Al and B powders. The synthesis mechanisms were in-vestigated by means of DSC,EMPA and XRD. It was confirmed that the exothermal reactions between Tiand Al powders promoted the formation of TiB_2 particles in the matrix. The average particle size of theproduced TiB_2 was about 2 microns, and their size, relative amount and morphology did not change after thereacted compacts were remelted, and the microstructure of the remelted TiAl TiB_2 composites was muchfiner than that of the cast Ti-Al base alloys. |
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| Keywords: | intermetallic compounds Ti-Al composites fabrication |
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