Abstract
Details of strengthening by cold drawing of FeNiCrSiC alloy wires produced by the in-rotating-water spinning method have been presented. The formation of a strain-induced α′ phase and the work-hardening of γ and α′ phases cause a significant increase in the tensile strength of the rapidly solidified wires. The tensile strength reaches as high as 3500 MPa for the Fe10Ni12Cr4Si0.25C alloy wire. Subsequent low temperature annealing results in a further increase in the tensile strength to 4050 MPa. The corrosion resistance of the cold-drawn wires was found to be comparable with that of high strength SUS304 wires. It was found that the work hardening behavior in cold drawing strongly depends on the chemical composition, especially in alloys with high C contents. The optimum chemical composition for high strength in the FeNiCrSiC alloy wires has been proposed by using the Ni-equivalent content.
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