Study on the effect of WC powder on the microstructure and properties of ZL102 alloy
Different amounts of WC powder were added to ZL102 alloy specimens.Characterization means such as SEM,3D video microscope and tensile testing machine were used to study the effect of WC powder on the properties of ZL102 alloy.The test results show that with the increase of WC powder addition,the microstructure of ZL102 alloy is obviously refined,while the mechanical properties of the alloy are obviously improved.When the amount of WC powder added is 0.20％,ZL102 alloy obtains the relatively best microstructure and tensile properties.Eutectic silicon from the uneven distribution of long needles gradually transformed into short rods or dots in the intergranular uniform distribution,grain or-ganization from a large number of columnar crystals to the equiaxial crystal transformation;tensile strength and tensile fracture maximum height of the bulge first rise and then decline,the elongation change trend is not obvious,the tensile strength of 237 MPa,an increase of 10.50％;tensile fracture maximum height of the bulge is 1558.30 μm,an increase of 72.21％.
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