Cemented Carbide YG11C and Tool Steel Crl2MoV was blazed with Ni-base amorphous alloys, QG-1011, MBF-20 and MBF-75, using dynamics thermodynamics analogue testing machine Gleeble 1500D. The effects of brazing temperat...Cemented Carbide YG11C and Tool Steel Crl2MoV was blazed with Ni-base amorphous alloys, QG-1011, MBF-20 and MBF-75, using dynamics thermodynamics analogue testing machine Gleeble 1500D. The effects of brazing temperature, holding time and holding pressure on micro-structure and bond strength were investigated. Results showed that YG11C and Crl2MoV were all wetted well by these three Ni-base alloys, and the bond strength was as high as 220MPa, 320MPa, 320MPa respectively. When the blazing temperature was at the point over the melting point 60-70°C of Ni-base alloy, the holding time was about 2-10min, the suitable pressure was benefit for improving the brazing quality. Microanalysis showed Co in cemented carbide diffused into liquid brazing alloy and formed the Fe-Co solid .solution.展开更多
文摘Cemented Carbide YG11C and Tool Steel Crl2MoV was blazed with Ni-base amorphous alloys, QG-1011, MBF-20 and MBF-75, using dynamics thermodynamics analogue testing machine Gleeble 1500D. The effects of brazing temperature, holding time and holding pressure on micro-structure and bond strength were investigated. Results showed that YG11C and Crl2MoV were all wetted well by these three Ni-base alloys, and the bond strength was as high as 220MPa, 320MPa, 320MPa respectively. When the blazing temperature was at the point over the melting point 60-70°C of Ni-base alloy, the holding time was about 2-10min, the suitable pressure was benefit for improving the brazing quality. Microanalysis showed Co in cemented carbide diffused into liquid brazing alloy and formed the Fe-Co solid .solution.
