| B添加对TiC/Ti6Al4V复合材料组织和耐磨性能的影响 |
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| 引用本文： | 林新志,马旭梁. B添加对TiC/Ti6Al4V复合材料组织和耐磨性能的影响[J]. 材料工程, 2009, 0(8) |
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| 作者姓名： | 林新志 马旭梁 |
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| 作者单位： | 1. 哈尔滨工程大学,材料科学与化学工程学院,哈尔滨,150001
2. 哈尔滨工程大学,材料科学与化学工程学院,哈尔滨,150001;哈尔滨理工大学,材料科学与工程学院,哈尔滨,150080 |
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| 基金项目： | 黑龙江省自然科学基金资助项目 |
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| 摘 要： | 用熔铸法制备原位自生钛合金基复合材料,研究B元素的添加对TiC/Ti6Al4V复合材料显微组织和耐磨性能的影响.结果表明:当B的加入量小于0.06%(质量分数,下同)时,随B加入量的增加,复合材料中的枝晶状增强相TiC的尺寸显著减小,由粗大的树枝状逐渐减小为细小的树枝状,甚至链条状和颗粒状,但是复合材料的耐磨性下降;当B添加量从0.1%增加到0.6%时,枝晶状TiC细化不明显,TiC周围伴有纤维状的TiB出现,复合材料的耐磨性能得到明显提高.B对TiC枝晶的细化是凝固前沿成分过冷区形核率的提高和TiC生长率降低的综合作用结果.耐磨性能的改善主要是生成的大量纤维状TiB共同参与了磨损所致.
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| 关 键 词： | B添加 TiC/Ti6Al4V复合材料 显微组织 耐磨性能 |
Effect of B Addition on Microstructure and Abrasive Property of TiC/Ti6Al4V Composites |
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| LIN Xin-zhi,MA Xu-liang. Effect of B Addition on Microstructure and Abrasive Property of TiC/Ti6Al4V Composites[J]. Journal of Materials Engineering, 2009, 0(8) |
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| Authors: | LIN Xin-zhi MA Xu-liang |
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| Affiliation: | LIN Xin-zhi1,MA Xu-liang1,2(1 College of Materials Science , Chemical Engineering,Harbin Engineering University,Harbin 150001,China,2 School of Materials Science , Engineering,Harbin University of Science , Technology,Harbin 150080,China) |
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| Abstract: | In-situ titanium alloy matrix composites were fabricated by melting-casting method and the effect of B content on microstructure and abrasive property of TiC/Ti6Al4V composites was studied.The results show that the average grain size of dendritic TiC in the composites is remarkably refined when the addition content of B is less than 0.06%(mass fraction).TiC dendrite gradually changes into small dendrite or even granular from coarse dendrite,but the abrasive property is obviously reduces with the increasing ... |
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| Keywords: | B addition TiC/Ti6Al4V composite microstructure abrasive property |
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