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激光熔化沉積Ti5Si3/NiTi雙相金屬間化合物合金耐磨性能
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國(guó)家自然科學(xué)基金(50625413, 50671004); 廣東省教育部產(chǎn)學(xué)研結(jié)合項(xiàng)目(2007B090400097, 2008B090500243)


Wear Resistance of Ti5Si3/NiTi Biphase Intermetallic Compound Alloy by Laser Melting Deposition
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    摘要:

    采用激光熔化沉積工藝制備出以塊狀Ti5Si3過(guò)渡金屬硅化物為初生相、以Ti5Si3/NiTi共晶為基體的雙相金屬間化合物耐磨合金，在室溫干滑動(dòng)磨損條件下測(cè)試了Ti5Si3/NiTi合金的耐磨性能并討論了其磨損機(jī)制。結(jié)果表明，由于Ti5Si3/NiTi合金良好的強(qiáng)韌性配合以及在磨損過(guò)程中磨損表面上形成了“無(wú)組織特征”的表面高硬度層，對(duì)合金有保護(hù)作用，合金在室溫干滑動(dòng)磨損條件下具有優(yōu)異的耐磨性能和很低的載荷敏感性

    Abstract:

    Biphase intermetallic compound wear-resistant alloy was prepared by laser melting deposition technique with bulk silicide Ti-5Si3 as primary phase and with Ti5Si3/NiTi eutectic as substrate. The wear resistance of Ti5Si3/NiTi alloy was tested under dry sliding wearing condition at room temperature and the worn mechanism was discussed. Results show that the Ti5Si3/NiTi alloy has excellent wear resistance and extremely low load-sensitivity under dry sliding wearing conditions, which is attributed to the good match between the toughness and the strength as well as the protection for the alloy from the formation of microstructurally featureless layer with high hardness on the worn surface of the alloy

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周宇英,王 燕,方艷麗,王華明.激光熔化沉積Ti5Si3/NiTi雙相金屬間化合物合金耐磨性能[J].稀有金屬材料與工程,2010,39(8):1411~1414.[Zhou Yuying, Wang Yan, Fang Yanli, Wang Huaming. Wear Resistance of Ti5Si3/NiTi Biphase Intermetallic Compound Alloy by Laser Melting Deposition[J]. Rare Metal Materials and Engineering,2010,39(8):1411~1414.]
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  • 收稿日期:2009-08-24
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