Effect of Silicon Content on Tensile Property of Laser Cladding Layer on 316L Stainless Steel
In order to study the effect of Si on the mechanical properties and forming quality of laser cladding layer on 316L stainless steel,three contents of Si for laser cladding layers on the 316L stainless steel were prepared,and the effects of Si content on the microstructure,tensile property and forming quality of the cladding layer were systematically analyzed.The result showed that various properties of 316L laser cladding layer are closely related to Si content.With the mass fraction of Si increases from 0.8%to 1.6%,the internal grains refines,the forming quality of the cladding layer improves,and the tensile strength increases from 525 MPa to 622 MPa.However,the inclusion of silicide in the cladding layer increases,and the plasticity decreases,resulting in the elongation after fracture dropping from 68.3%to 40.5%.
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