Effects of W on Microstructure and Friction Properties of FeCoCrNiWx High Entropy Alloys
FeCoCrNiWx high entropy alloys with different W contents were prepared by non-consumable vacuum arc melting furnace.The microstructure,morphology,composition distribution,microhardness,friction and wear proper-ties of the alloy were investigated by X-ray diffraction(XRD),scanning electron microscopy(SEM),MFT-EC4000 reciprocating electrochemical corrosion friction and wear tester,microhardness tester and profile tester.The results indicate that FeCoCrNiWx high entropy alloys all exhibit a simple face centered cubic structure(FCC),which is trans-formed from a single FCC phase to FCC phase+μ phase with the increase of W content.When x=0.5,the hardness of FeCoCrNiW0.5 is 196.75 HV,and the volume wear has the minumum value.The alloy possesses desirable plastic deformation resistance and wear resistance,and the strengthening mechanism is dominated by solution strengthening and the second phase(μ phase)strengthening.
High Entropy AlloysMicrostructureFriction Properties
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