Microstructure and Mechanical Properties of TiB2-WC-TiC-Ni Composite Tool Materials

摘要：

TiB2-WC-TiC-Ni composite tool materials were fabricated using Ni as sintering additive by vacuum hot-pressing technique. The microstructure and mechanical properties of the composite were investigated. The composite was analyzed by scanning electron microscope (SEM), X-ray diffraction (XRD) and energy dispersive spectrometry (EDS). The microstructure of TiB2-WC-30wt.％TiC-Ni composite containing fine WC grains, TiC grains and uniform TiB2 grains. A lot of pores and coarse grains were found in TiB2-WC-10wt.％TiC-Ni composite. The pores, brittle phases and the coarse grains were harmful to the improvement of the mechanical properties of the composite. The good wettability and the adequate liquid not only inhibited the formation of the pores and the coarse grains, but also strengthened the interface energy among the grains. The flexural strength, fracture toughness and Vickers hardness of TiB2-WC-30wt.％TiC-Ni composite were 996.6±113.6MPa, 7.64±0.28MPa·m1/2 and 23.58±0.82GPa, respectively.

关键词： TiB2 WC TiC Microstructure Mechanical properties

作者: Jinpeng Song Chuanzhen Huang Bin Zou Hanlian Liu Jun Wang

作者单位: Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering,Shandong University, Jinan 250061, PR China Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Shandong University),Ministry of Education

会议类型: 国际会议

会议名称: 2011 International Conference on Advanced Materials and Engineering Materials(2011先进材料与工程材料国际会议 ICAMEM 2011)

会议地点: 沈阳

会议语种:英文

页码: 1191-1195

在线出版日期: 2011-11-22（万方平台首次上网日期，不代表论文的发表时间）