Effect of C Content on Microstructure and Properties of(FeCoCrNi)88-x Mo8WNb3Cx High Entropy Alloys by Additive Manufacturing
(FeCoCrNi)88-xMo8WNb3C,(x=0.25,0.5,0.75,1,1.5,2,2.5)high entropy alloy specimens are prepared by mechanical alloying and additive manufacturing.The formation law of the high entropy alloys is clarified firstly,and then the effects of C content on their microstructures and mechanical properties are further studied.It is found out that the(FeCoCrNi)88-xMo8WNb3Cx high entropy alloy is composed of FCC and M6C phases when the C content is between 0.25%and 2.50%(mole fraction).With the increase of C content,the compressive strength of the alloy increases and the fracture strain increases at first and then decreases.When the C content is 2.00%,the compressive strength and fracture strain of the al-loy are 1 993.4 MPa and 31.5%.
high entropy alloymechanical alloyingadditive manufacturingmicrostructuremechanical property