Journal article
Cold isostatic pressing to improve the mechanical performance of additively manufactured metallic components
- Abstract:
- 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 this work, we propose subjecting the manufactured 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 and microstructure of the material according to the orientations of layer deposition during the manufacturing process. Our observations reveal a homogeneous distribution independent of these orientations, evidencing thus an isotropic behaviour of the material.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 3.1MB, Terms of use)
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- Publisher copy:
- 10.3390/ma12152495
Authors
- Publisher:
- MDPI
- Journal:
- Materials More from this journal
- Volume:
- 12
- Issue:
- 15
- Article number:
- 2495
- Place of publication:
- Switzerland
- Publication date:
- 2019-08-06
- Acceptance date:
- 2019-08-05
- DOI:
- ISSN:
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1996-1944
- Pmid:
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31390786
- Language:
-
English
- Keywords:
- Pubs id:
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1048719
- Local pid:
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pubs:1048719
- Deposit date:
-
2024-02-28
Terms of use
- Copyright holder:
- Cuesta et al.
- Copyright date:
- 2019
- Rights statement:
- © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
- Licence:
- CC Attribution (CC BY)
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