Metals and Materials International ( IF 3.3 ) Pub Date : 2021-09-17 , DOI: 10.1007/s12540-021-01052-0 Congyuan Zeng 1 , Hao Wen 1 , Huan Ding 1 , Michael Khonsari 1 , Shengmin Guo 1 , Benjamin C. Bernard 2 , Jonathan R. Raush 2 , Paul R. Gradl 3
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The effect of aging processes on the tensile properties of C-18150 copper alloy samples, made by laser powder-bed-fusion additive manufacturing (AM) process with three different fabrication orientations (horizontal, angled, and vertical to the build direction), are investigated. For the as-fabricated C-18150 AM parts, horizontal and angled fabrication directions result in marginally better tensile strengths and much improved strain-to-failure values than those of vertically built AM parts. After the aging treatment, tensile strength can be significantly enhanced with a sacrifice 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. At 800 °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 insight into the measured tensile properties.
Graphic Abstract
中文翻译：
增材制造的 C-18150 铜合金的拉伸性能
时效过程对 C-18150 铜合金样品拉伸性能的影响，由激光粉末床融合增材制造 (AM) 工艺制成，具有三种不同的制造方向（水平、成角度和垂直于构建方向），如下所示调查。对于制造的 C-18150 AM 部件，水平和倾斜的制造方向比垂直制造的 AM 部件的拉伸强度略好，应变失效值也大大提高。时效处理后，拉伸强度可以显着提高，但会牺牲应变-破坏值。此外，通过在 500 °C 的时效温度下处理制造的样品 2 小时来获得最高的拉伸强度。在 800 °F (427 °C) 时，拉伸强度和延展性都小于低温值（室温和 400 °F/204 °C）。对 AM 部件的相成分、微观结构和成分分布进行表征，以深入了解测得的拉伸性能。
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