| TiAl基合金的制备及其摩擦磨损性能 |
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| 引用本文： | 马兴伟,金洙吉,闫石.TiAl基合金的制备及其摩擦磨损性能[J].机械工程材料,2009,33(3). |
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| 作者姓名： | 马兴伟 金洙吉 闫石 |
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| 作者单位： | 大连理工大学精密与特种加工教育部重点实验室,辽宁,大连,116024
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| 摘 要： | 以钛粉、铝粉和铬粉为原料,采用机械合金化放电等离子烧结技术制备了TiAl基合金,分析了球磨时间和烧结温度对其物相组成、显微组织以及硬度的影响;用SiC砂轮为对偶件对TiAl基合金的摩擦磨损性能进行了研究.结果表明:混合粉经150 h球磨,1 173 K烧结9 min后所制备的合金具有较好的性能,其显微组织均匀细小,平均晶粒尺寸小于10μm,硬度达到68.2 HRC;与304不锈钢相比,烧结TiAl基合金具有更低的摩擦因数和更高的耐磨性,磨损机理为磨粒磨损.
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| 关 键 词： | 机械合金化 放电等离子烧结 TiAl基合金 摩擦磨损性能 |
Preparation and Tribological Properties of TiAl Based Alloy |
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| MA Xing-wei,JIN Zhu-ji,YAN Shi.Preparation and Tribological Properties of TiAl Based Alloy[J].Materials For Mechanical Engineering,2009,33(3). |
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| Authors: | MA Xing-wei JIN Zhu-ji YAN Shi |
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| Affiliation: | Dalian University of Technology;Dalian 116024;China |
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| Abstract: | TiAl based alloy was prepared by mechanical alloying(MA) and sparking plasma sintering(SPS) method using Ti,Al and Cr powders as raw material.The effects of milling time and sintering temperature on the phase composition,microstructure and hardness of the sintered alloy were analyzed.Abrasion test with SiC grinding wheel as matching part was carried out to investigate the tribological properties of the sintered alloy.The results show that the TiAl based alloy obtained by powder milling for 150 h and sinteri... |
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| Keywords: | mechanical alloying spark plasma sintering TiAl based alloy tribological property |
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