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TiC含量对微波烧结TiC/TC4复合材料组织和性能的影响
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南昌航空大学材料科学与工程学院 南昌330063,南昌航空大学材料科学与工程学院 南昌330063,南昌航空大学材料科学与工程学院 南昌330063

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TG146.23

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国家自然科学基金(51101085)


The effect of TiC content on TiC / TC4 composite microstructure and properties prepared by microwave sintering
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School of Material Science and Engineering,Nanchang HangKong University,School of Material Science and Engineering,Nanchang HangKong University,School of Material Science and Engineering,Nanchang HangKong University

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    摘要:

    通过微波烧结法制备TiC/TC4 复合材料,研究不同质量分数增强相TiC(0%、5%、10/%、15%)对钛基复合材料显微组织和性能的影响。结果表明:TiC/TC4复合材料只有TiC和基体ɑ-Ti+β-Ti三种物相组成。随着增强相TiC 含量增加,TiC/TC4复合材料相对密度、显微硬度、室温压缩强度均提高,分别达到98.01%、661 HV、1789MPa,其相对密度与有关文献中的真空烧结相比提高2%~6%,其抗压强度与熔铸法制备的铸态钛基复合材料相比提高5%~15%左右。随TiC含量增加,TiC/TC4复合材料耐磨性提高,摩擦系数在0.25~0.30之间,其室温磨损机制由磨粒磨损和粘着磨损转变为轻微的剥层磨损。

    Abstract:

    The impacts of different mass fraction TiC (0%, 5%, 10 /%, 15%) on the microstructure and properties of titanium-based composite material by microwave sintering were studied.The results show that the TiC/TC4 composite material is only consist of TiC and matrix ɑ-Ti + β-Ti. The relative density, microhardness and compressive strength of the TiC/TC4 composite increase with the increasing of TiC content at room temperature, which reaching 98.01%, 661 HV, 1789MPa respectively, the relative density of the composite increases about 2% to 6% compared to the vacuum sintering with the referred literatures, and the compressive strength increases about 5% to 15% compared to the cast titanium matrix composites prepared by melting-casting process. Beside, the wear resistance of TiC/TC4 composite also enhances with the addition of TiC content which the friction coefficient is between 0.25 to 0.30.Therefore its wear mechanism changes from the abrasive wear and adhesive wear into a slight delamination.

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罗军明,吴小红,徐吉林. TiC含量对微波烧结TiC/TC4复合材料组织和性能的影响[J].稀有金属材料与工程,2017,46(11):3416~3421.[Luo Junming, Wu Xiaohong, Xu Jiling. The effect of TiC content on TiC / TC4 composite microstructure and properties prepared by microwave sintering[J]. Rare Metal Materials and Engineering,2017,46(11):3416~3421.]
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  • 收稿日期:2015-08-10
  • 最后修改日期:2015-12-22
  • 录用日期:2016-01-14
  • 在线发布日期: 2017-12-13
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