| 原位合成TiB/Ti基复合材料增强体的生长机制 |
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| 引用本文： | 吕维洁,张小农,张荻,吴人洁,卞玉君,方平伟.原位合成TiB/Ti基复合材料增强体的生长机制[J].金属学报,2000,36(1):104-108. |
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| 作者姓名： | 吕维洁 张小农 张荻 吴人洁 卞玉君 方平伟 |
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| 作者单位： | 1. 上海交通大学金属基复合材料国家重点实验室,上海,200030
2. 上海钢铁研究所钛合金分所,上海,200940 |
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| 基金项目： | 国家自然科学基金重点资助项目59631080和上海市新材料中心资助项目 |
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| 摘 要： | 利用Ｔｉ与Ｂ之间的自蔓延高温合成反应，经非自耗电弧熔炼工艺制备了ＴｉＢ增强的钛基复合材料，借助Ｘ射线衍射（ＸＲＤ），扫描电镜和透射电镜分析了复合材料的物相和增强体的形态，结果表明：只存在ＴｉＢ增强体和α－Ｔｉ。原位合成增强体ＴｉＢ的形貌与其Ｂ２７晶体结构密切相关，ＴｉＢ增强体容易沿（０１０）方向生长而生成柱状短纤维，其柱面由（１００），（１０１）和（１０１）组成。
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| 关 键 词： | TiB／Ti 复合材料 原位反应 晶体结构 生长机制 |
| 文章编号： | 0412-1961(2000)01-0104-05 |
| 修稿时间： | 1999年7月23日 |
GROWTH MECHANISM OF REINFORCEMENT IN IN SITU PROCESSED TiB/Ti COMPOSITES |
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| L Weijie,ZHANG Xiaonong,ZHANG Di,WU Renjie,BIAN Yujun,FANG Pingwei.GROWTH MECHANISM OF REINFORCEMENT IN IN SITU PROCESSED TiB/Ti COMPOSITES[J].Acta Metallurgica Sinica,2000,36(1):104-108. |
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| Authors: | L Weijie ZHANG Xiaonong ZHANG Di WU Renjie BIAN Yujun FANG Pingwei |
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| Affiliation: | L(U) Weijie,ZHANG Xiaonong,ZHANG Di,WU Renjie,BIAN Yujun,FANG Pingwei |
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| Abstract: | Utilizing the self--propagation high temperature synthesis reaction between titanium and boron, TiB reinforced titanium matrix composites have been produced by non-consumable arc--melting technology. Phase identification and reinforcement morphologies have been performed by X- ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results show that there only exist two phases in the composites, namely TiB reinforcement and a-Ti matrix phase. Reinforcement morphologies are closely relate to the crystal structure of TiB, TiB reinforcements are liable to grow along 010] direction and become prism--like short--fibre. The prismatic planes of TiB are consisted with facets (100), (101) and (101). |
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| Keywords: | TiB/Ti composite in situ reaction crystal structure growth mechanism |
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