钛合金/碳纤维布复合材料的界面与力学性能的研究（英文）  

Interface Optimization and Mechanical Properties of Cu-coated Carbon Fiber Cloth/Titanium Alloy Composite

作　　者：杨智明[1] 吴腾腾 刘金旭[1] 周林[3] 李树奎[1,4] 

机构地区：[1]北京理工大学材料学院,北京100081 [2]北京汽车股份有限公司,北京101300 [3]北京机电研究所,北京100083 [4]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《稀有金属材料与工程》2017年第4期869-875,共7页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(51201013)

摘　　要：选用Ti-6Al-4V(TC4)钛合金为基体,镀铜碳纤维布为增强相来制备钛合金/碳纤维布复合材料。通过放电等离子烧结法(SPS)对镀铜碳纤维布与钛合金薄片进行叠层烧结,制备钛合金/碳纤维布叠层复合材料,并对其界面形貌、微观组织与力学性能进行表征。结果表明:镀铜碳纤维均匀分布在钛合金/碳纤维布复合材料中,Cu Ti,Cu和少量的TiC沿着纤维和基体的界面分布。钛合金/碳纤维布复合材料具有比钛合金略高的塑性,同时屈服强度和抗压强度与钛合金相比有了明显的提高。碳纤维表面电镀铜对复合材料界面有着重要的影响:(1)显着降低钛合金/碳纤维布复合材料的烧结温度;(2)提高了碳纤维和钛基体之间的润湿性,改善了界面结合,从而提高了钛合金/碳纤维布复合材料的力学性能;(3)有效地抑制TiC脆性相的产生,与未镀铜的碳纤布增强钛复合复合材料相比,镀铜碳纤维布/钛合金复合材料具有更好的塑性。Using Cu-coated carbon fiber cloth （CFC） as reinforcement and Ti-6Al-4V （TC4） as matrix, the Cu-coated CFC/TC4 composite was fabricated by spark plasma sintering. The interface morphology, phase microstructure, phase distribution and mechanical properties of CFC/TC4 were characterized. Results show that carbon fibers are uniformly distributed in Cu-coated CFC/TC4. CuTi, Cu and trace TiC are distributed along the interface between fibers and matrix. The Cu-coated CFC/TC4 possesses slightly better plasticity than TC4, and the yield strength and compressive strength are obviously enhanced. The electroplated Cu plays important roles： （1） markedly decreasing the sintering temperature of Cu-coated CFC/TC4; （2） significantly improving the wettability and interracial bonding between carbon fibers and TC4 matrix, thus increasing mechanical properties of Cu-coated CFC/TC4; （3） effectively inhibits the excessiving generation of brittle TiC compared with uncoated CFC/TC4 composite, thus maintaining good plasticity of Cu-coated CFC/TC4.

关 键 词：金属基复合材料 界面 烧结 力学性能 微观组织 

分 类 号：TB333[一般工业技术—材料科学与工程]