Characteristics of Nanophase WC and WC-3 wt% (Ni, Co, and Fe) Alloys Using a Rapid Sintering Process for the Application of Friction Stir Processing Tools
作者： Daeup Kim , Young Choi , Yongil Kim , Seungboo Jung
DOI: 10.1155/2015/343619
关键词:
摘要: Microstructures and mechanical characteristics of tungsten carbide- (WC-) based alloys, that is, WC, WC-3 wt% Ni, Co, Fe, fabricated using a spark plasma sintering (SPS) method for the application friction stir processing tools were evaluated. The sintered bodies with diameter 66 mm showed relative densities up to 99% an average particle size 0.26~0.41 μm under pressure condition 60 MPa electric current 35 min without noticeable grain growth during sintering. Even though no phase changes observed after ball milling process phases W2C appeared in all samples Vickers hardness fracture toughness Fe ranged from 2,240 kg mm2 2,730 kg mm2 6.3 MPa·m1/2 9.1 MPa·m1/2, respectively.
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