Structures and Properties of Cladding Layer by HM3 Electrode
HM3 welding electrodes were prepared with different contents of the coating,the structure and mechancical properties of the cladding layer were studied after heat treatment.The weld-core wires(4Cr5MoSiV1) were 4mm dia.And adding Mo and Nb into the coating of the electrodes,as to increase Mo and Nb contents.The processing behavior of the electrode and the microstructure,wear resistance,hardness etc.were tested by using JSM-550LV SEM,HRC-150 microhardness tester and X-ray diffraction.The microstructures of the clad layer are martensite,residual austenite and carbide.