Applications of WC-based composites rapid synthesized by consumable electrode in-situ metallurgy to cutting pick

作者：Li Jiannan^*; Li Huiqi; Wang Mei; Wang Shufeng; Ji Qiang; Li Min; Chi Jing

来源：International Journal of Refractory Metals and Hard Materials, 2012, 35: 132-137.

DOI：10.1016/j.ijrmhm.2012.05.005

• Consumable electrode
• In-situ metallurgy
• Tungsten carbide
• Microstructure
• Microhardness
• Crystallization mechanism

The composite WpC (WC + W2C) material was prepared by the rapid route of consumable electrode D.C. arc in-situ metallurgy in the blind hole of the cutting pick, which has excellent metallurgical bonding with the substrate. The microstnicture and microhardness of WpC were investigated by XRD, EDS, TEM and microhardness tester. The crystallization mechanism was analyzed. The results show that the microstructure of the sample is uniform, and the hard phases are WC, W2C, Fe3W3C. The average hardness of the alloy is 1290 HV0.2 and the average microhardness of WpC is 2253HV(0.2). The two-dimensional microstructure morphology of WpC is triangluar and rectangular. The largest WpC grains can grow to 70 pm in the molten pool.

• 出版日期2012-11
• 单位山东大学