Effect of TiC particle size on microstructure and mechanical properties of 1％TiCp/W composites

摘要：

The nano-TiCp/W and micro-TiCp/W composites containing 1％ TiC(mass fraction) particles with average particle sizes of 50 nm and 1.5 μm were fabricated respectively by high energy ball milling and vacuum hot pressing (VHP) at 2 373 K,30 MPa,in a vacuum of 1×10.3 Pa.Microstructure and mechanical properties of the composites were examined at room temperature.The results show that both n-TiC and μ-TiC particles are homogeneously distributed in the as-sintered composites.The size of n-TiC particle is about 100 nm,and that of μ-TiC particle is about 1 μm.The additions of n-TiC and μ-TiC particles both result in higher mechanical properties compared with monolithic W.The improved mechanical properties may be mainly attributed to the grain size strengthening,dispersion strengthening and grain boundaries strengthening.The addition of n-TiC particles to tungsten is found to have beneficial effects on the mechanical properties than that of μ-TiC due to its small size.

关键词： tungsten titanium carbide composites particle size microstructure mechanical properties

作者: YU Fu-wen WU Yu-cheng CHEN Yong DENG Jing-quan CHEN Jun-ling

作者单位: School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China

会议类型: 国际会议

会议名称: 2007年国际有色金属大会(International Conference of Nonfereous Materials 2007)(ICNFM)

会议地点: 长沙

会议语种:英文

在线出版日期: 2007-11-28（万方平台首次上网日期，不代表论文的发表时间）