2026-04-30T16:08:50Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/56592021-11-02T12:04:44Zcom_10259_4201com_10259_5086com_10259_2604col_10259_4505

Cold Isostatic pressing to improve the mechanical performance of additively manufactured metallic components Cuesta Segura, Isidoro Iván Martínez Pañeda, Emilio Díaz Portugal, Andrés Alegre Calderón, Jesús Manuel cold isostatic pressure metal 3D printing small punch test binder jetting Additive manufacturing is becoming a technique with great prospects for the production of components with new designs or shapes that are difficult to obtain by conventional manufacturing methods. One of the most promising techniques for printing metallic components is binder jetting, due to its time efficiency and its ability to generate complex parts. In this process, a liquid binding agent is selectively deposited to adhere the powder particles of the printing material. Once the metallic piece is generated, it undergoes a subsequent process of curing and sintering to increase its density (hot isostatic pressing). In thiswork,we propose subjecting themanufactured component to an additional post-processing treatment involving the application of a high hydrostatic pressure (5000 bar) at room temperature. This post-processing technique, so-called cold isostatic pressing (CIP), is shown to increase the yield load and the maximum carrying capacity of an additively manufactured AISI 316L stainless steel. The mechanical properties, with and without CIP processing, are estimated by means of the small punch test, a suitable experimental technique to assess the mechanical response of small samples. In addition,we investigate the porosity andmicrostructure of thematerial according to the orientations of layer deposition during themanufacturing process. Our observations reveal a homogeneous distribution independent of these orientations, evidencing thus an isotropic behaviour of the material. 2021-03-24T09:06:22Z 2021-03-24T09:06:22Z 2019-08 info:eu-repo/semantics/article http://hdl.handle.net/10259/5659 10.3390/ma12152495 1996-1944 eng Materials. 2019, V. 12, n. 15, 2495 https://doi.org/10.3390/ma12152495 info:eu-repo/grantAgreement/JCyL/BU033G18 http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional MDPI