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熔鑄-原位合成TiC/7075復(fù)合材料的拉伸和磨損性能
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Tensile and Wear Properties of TiC/7075 Composite Prepared by Melt in-Situ Synthesis
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    摘要:

    采用熔鑄-原位合成法制備TiC/7075復(fù)合材料。結(jié)果顯示，TiC顆粒以近球形為主，平均尺寸小于1.0 μm。拉伸性能測試發(fā)現(xiàn)，復(fù)合材料的延伸率雖略有降低，但其拉伸強度和屈服強度較基體7075鋁合金分別提高35.8%和 42.2%，表明原位形成的TiC顆粒有效地強化了基體。摩擦磨損結(jié)果顯示，在9.1 N載荷下質(zhì)量分?jǐn)?shù)為6%TiC/7075復(fù)合材料的耐磨性高于7075鋁合金，而在35.8 N載荷下復(fù)合材料的耐磨性卻低于7075鋁合金。并分析了外加載荷對材料耐磨性的影響

    Abstract:

    TiC/7075 composite was synthesized by melt in-situ synthesis. The TiC particulates were observed from SEM to be nearly spherical shape with an average size of less than 1.0 μm. The experimental results show that the tensile elongation of the composite is slightly decreased, but the tensile strength and yield strength are respectively improved about 35.8% and 42.2% than those of 7075 aluminum alloy, showing that the TiC particulates formed by in-suit reaction strengthen the matrix effectively. The results of wear experiment show that the wear resistance of 6wt％TiC/7075 composite is better than that of 7075 aluminum alloy under lower loading (9.1 N). The wear resistance of the same composite, however, is lower than that of 7075 aluminum alloy under higher loading (35.8 N). The effect of external load on the wear resistance of the materials was analyzed

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孫 淼,許存官,何建平,王 鋒,周香林,楊 濱.熔鑄-原位合成TiC/7075復(fù)合材料的拉伸和磨損性能[J].稀有金屬材料與工程,2009,38(2):308~312.[Sun Miao, Xu Cunguan, He Jianping, Wang Feng, Zhou Xianglin, Yang Bin. Tensile and Wear Properties of TiC/7075 Composite Prepared by Melt in-Situ Synthesis[J]. Rare Metal Materials and Engineering,2009,38(2):308~312.]
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  • 收稿日期:2008-01-28
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