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        Tensile Properties of Additively Manufactured C-18150 Copper Alloys

        Congyuan Zeng,Hao Wen,Benjamin C. Bernard,Huan Ding,Jonathan R. Raush,Paul R. Gradl,Michael Khonsari,Shengmin Guo 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.1

        The efect of aging processes on the tensile properties of C-18150 copper alloy samples, made by laser powder-bed-fusionadditive manufacturing (AM) process with three diferent fabrication orientations (horizontal, angled, and vertical to the builddirection), are investigated. For the as-fabricated C-18150 AM parts, horizontal and angled fabrication directions result inmarginally better tensile strengths and much improved strain-to-failure values than those of vertically built AM parts. Afterthe aging treatment, tensile strength can be signifcantly enhanced with a sacrifce of the strain-to-failure value. Moreover,the highest tensile strength is achieved by treating the as-fabricated samples at an aging temperature of 500 °C for 2 h. At800 °F (427 °C), both tensile strength and ductility are smaller than low temperature values (room temperature and 400 °F/204 °C). Phase constituents, microstructure, and composition distribution of the AM parts are characterized to gain insightinto the measured tensile properties.

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