Microstructure and mechanical properties of EQNiCr-3 strip surfacing material
This study investigated the microstructure characteristics of EQNiCr-3 strip welding material using an optical microscope,revealing the intrinsic relationship between its microstructure and mechanical properties.The experimental results indicate that the γ-Ni based solid solution is the main constituent phase in the stud-ied weld overlay,and there are a large number of dispersed strengthening phases distributed inside it.The syn-ergistic effect of these microstructures significantly improves the hardness and tensile strength of the material.The mechanical properties of EQNiCr-3 strip electrode overlay material under heat treatment were systematical-ly evaluated using microhardness testing and tensile testing.Research has found that after multiple welding ther-mal cycles,the hardness and tensile strength of the material have increased by about 10％compared to their o-riginal state,while the toughness has slightly decreased.
EQNiCr-3 cladding materialmicrostructuremechanical propertiesmicrohardnesstensile test
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维普
