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February 15, 2016
Hitachi and Tohoku University developed additive manufacturing technology for high-entropy alloy with superior tensile strength and corrosion resistance using 3D printer for metals
Hitachi, Ltd. and Institute for Materials Research (IMR, Tohoku University) have developed an additive manufacturing technology for high-entropy alloy (called HiPEACE)–with superior tensile strength and corrosion resistance– using a 3D printer for metals. This technology makes it possible to fabricate homogeneous components with intricate shapes but without compositional irregularities. Compared to components made by conventional methods for manufacturing using a 3D printer for metals, these components provide 1.2-times-higher tensile strength (i.e., 1300 MPa) and 1.7-times-higher pitting potential (an index of corrosion resistance; i.e., 0.85 V vs Ag/AgCl). Applying the developed technology made it possible to successfully trial manufacture components with complicated shapes. Utilizing this technology to fabricate components for facilities such as chemical plants (which require high strength and corrosion resistance) will contribute to enhancing lifetime and operation rate of such facilities.
The developed product was presented at TMS 2016 145th Annual Meeting & Exhibition of The Minerals, Metals & Materials Society from February 14 to 18, 2016 in Nashville, Tennessee, USA.
Impeller with complicated shapes successfully formed by test molding