Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys
Copper is a key material for cooling of thermally stressed components in modern aerospace propulsion systems, due to its high thermal conductivity. The use of copper materials for such applications requires both high material strength and high stability at high temperatures, which can be achieved by...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-09-01
|
| Series: | Journal of Manufacturing and Materials Processing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2504-4494/6/5/102 |
| _version_ | 1797472429028671488 |
|---|---|
| author | Markus B. Wilms Silja-Katharina Rittinghaus |
| author_facet | Markus B. Wilms Silja-Katharina Rittinghaus |
| author_sort | Markus B. Wilms |
| collection | DOAJ |
| description | Copper is a key material for cooling of thermally stressed components in modern aerospace propulsion systems, due to its high thermal conductivity. The use of copper materials for such applications requires both high material strength and high stability at high temperatures, which can be achieved by the concept of oxide dispersion strengthening. In the present work, we demonstrate the oxide reinforcement of two highly conductive precipitation-strengthened Cu-Cr-Nb alloys using laser additive manufacturing. Gas-atomized Cu-3.3Cr-0.5Nb and Cu-3.3Cr-1.5Nb (wt.%) powder materials are decorated with Y<sub>2</sub>O<sub>3</sub> nanoparticles by mechanical alloying in a planetary mill and followed by consolidation by the laser additive manufacturing process of laser powder bed fusion (L-PBF). While dense specimens (>99.5%) of reinforced and nonreinforced alloys can be manufactured, oxide dispersion-strengthened alloys additionally exhibit homogeneously distributed oxide nanoparticles enriched in yttrium and chromium next to Cr<sub>2</sub>Nb precipitates present in all alloys examined. Higher niobium contents result in moderate increase of the Vickers hardness of approx. 10 HV0.3, while the homogeneously dispersed nanometer-sized oxide particles lead to a pronounced increase of approx. 30 HV0.3 in material strength compared to their nonreinforced counterparts. |
| first_indexed | 2024-03-09T20:01:37Z |
| format | Article |
| id | doaj.art-1e2b9d4e61bd477084da8afad681352e |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-09T20:01:37Z |
| publishDate | 2022-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-1e2b9d4e61bd477084da8afad681352e2023-11-24T00:42:15ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942022-09-016510210.3390/jmmp6050102Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium AlloysMarkus B. Wilms0Silja-Katharina Rittinghaus1Chair of Materials Science and Additive Manufacturing, School of Mechanical Engineering and Safety Engineering, University of Wuppertal, Gaussstr. 20, 42119 Wuppertal, GermanyChair of Materials Science and Additive Manufacturing, School of Mechanical Engineering and Safety Engineering, University of Wuppertal, Gaussstr. 20, 42119 Wuppertal, GermanyCopper is a key material for cooling of thermally stressed components in modern aerospace propulsion systems, due to its high thermal conductivity. The use of copper materials for such applications requires both high material strength and high stability at high temperatures, which can be achieved by the concept of oxide dispersion strengthening. In the present work, we demonstrate the oxide reinforcement of two highly conductive precipitation-strengthened Cu-Cr-Nb alloys using laser additive manufacturing. Gas-atomized Cu-3.3Cr-0.5Nb and Cu-3.3Cr-1.5Nb (wt.%) powder materials are decorated with Y<sub>2</sub>O<sub>3</sub> nanoparticles by mechanical alloying in a planetary mill and followed by consolidation by the laser additive manufacturing process of laser powder bed fusion (L-PBF). While dense specimens (>99.5%) of reinforced and nonreinforced alloys can be manufactured, oxide dispersion-strengthened alloys additionally exhibit homogeneously distributed oxide nanoparticles enriched in yttrium and chromium next to Cr<sub>2</sub>Nb precipitates present in all alloys examined. Higher niobium contents result in moderate increase of the Vickers hardness of approx. 10 HV0.3, while the homogeneously dispersed nanometer-sized oxide particles lead to a pronounced increase of approx. 30 HV0.3 in material strength compared to their nonreinforced counterparts.https://www.mdpi.com/2504-4494/6/5/102oxide dispersion strengtheningODScopper–chromium–niobiumlaser additive manufacturinglaser powder bed fusion |
| spellingShingle | Markus B. Wilms Silja-Katharina Rittinghaus Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys Journal of Manufacturing and Materials Processing oxide dispersion strengthening ODS copper–chromium–niobium laser additive manufacturing laser powder bed fusion |
| title | Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys |
| title_full | Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys |
| title_fullStr | Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys |
| title_full_unstemmed | Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys |
| title_short | Laser Additive Manufacturing of Oxide Dispersion-Strengthened Copper–Chromium–Niobium Alloys |
| title_sort | laser additive manufacturing of oxide dispersion strengthened copper chromium niobium alloys |
| topic | oxide dispersion strengthening ODS copper–chromium–niobium laser additive manufacturing laser powder bed fusion |
| url | https://www.mdpi.com/2504-4494/6/5/102 |
| work_keys_str_mv | AT markusbwilms laseradditivemanufacturingofoxidedispersionstrengthenedcopperchromiumniobiumalloys AT siljakatharinarittinghaus laseradditivemanufacturingofoxidedispersionstrengthenedcopperchromiumniobiumalloys |