Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al Coatings
The aluminum cold spray feedstock powder was single- and dual-reinforced with no greater than 2 vol% boron nitride nanoplatelets (BNNP) and/or nanometric boron carbide (nB<sub>4</sub>C). These powders were cold sprayed onto Al-6061 substrates and then heat-treated in an argon environment...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Journal of Manufacturing and Materials Processing |
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| Online Access: | https://www.mdpi.com/2504-4494/7/1/32 |
| _version_ | 1797620099959488512 |
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| author | Kia Min Phua Thomas Stapel Troy Y. Ansell |
| author_facet | Kia Min Phua Thomas Stapel Troy Y. Ansell |
| author_sort | Kia Min Phua |
| collection | DOAJ |
| description | The aluminum cold spray feedstock powder was single- and dual-reinforced with no greater than 2 vol% boron nitride nanoplatelets (BNNP) and/or nanometric boron carbide (nB<sub>4</sub>C). These powders were cold sprayed onto Al-6061 substrates and then heat-treated in an argon environment. In addition, micro- and nano-indentation hardness and wear testing were performed on the heat-treated samples. Further microscopy and optical profilometry were used to characterize the microstructure and wear track volumes. Minimal changes to the splat structure were observed after heat treatment. However, when compared to the pure Al coating, microhardness improved with reinforcement after treatment at 500 °C, while nanohardness improved only in the dual-reinforced coatings, again after treatment at 500 °C. The elastic modulus generally decreased for the reinforced coatings after treatment; however, indentation test results were mixed. The wear testing done on samples heat treated at 500 °C for one hour showed increases in the specific wear rate for single-reinforced coatings but decreases in the dual-reinforced coatings. These results indicate that both dual-reinforcement and heat treatment are required for improvements in the mechanical and tribological properties of Al nanocomposites. |
| first_indexed | 2024-03-11T08:36:19Z |
| format | Article |
| id | doaj.art-0d751dfcef434237abecef9a1359623f |
| institution | Directory Open Access Journal |
| issn | 2504-4494 |
| language | English |
| last_indexed | 2024-03-11T08:36:19Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Manufacturing and Materials Processing |
| spelling | doaj.art-0d751dfcef434237abecef9a1359623f2023-11-16T21:26:05ZengMDPI AGJournal of Manufacturing and Materials Processing2504-44942023-01-01713210.3390/jmmp7010032Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al CoatingsKia Min Phua0Thomas Stapel1Troy Y. Ansell2Coatings and Composites for Extreme Environments Lab (CE)<sup>2</sup>, Department of Mechanical and Aerospace Engineering, Naval Postgraduate School, Monterey, CA 93943, USANanoMEMS Laboratory, Department of Physics, Naval Postgraduate School, Monterey, CA 93943, USACoatings and Composites for Extreme Environments Lab (CE)<sup>2</sup>, Department of Mechanical and Aerospace Engineering, Naval Postgraduate School, Monterey, CA 93943, USAThe aluminum cold spray feedstock powder was single- and dual-reinforced with no greater than 2 vol% boron nitride nanoplatelets (BNNP) and/or nanometric boron carbide (nB<sub>4</sub>C). These powders were cold sprayed onto Al-6061 substrates and then heat-treated in an argon environment. In addition, micro- and nano-indentation hardness and wear testing were performed on the heat-treated samples. Further microscopy and optical profilometry were used to characterize the microstructure and wear track volumes. Minimal changes to the splat structure were observed after heat treatment. However, when compared to the pure Al coating, microhardness improved with reinforcement after treatment at 500 °C, while nanohardness improved only in the dual-reinforced coatings, again after treatment at 500 °C. The elastic modulus generally decreased for the reinforced coatings after treatment; however, indentation test results were mixed. The wear testing done on samples heat treated at 500 °C for one hour showed increases in the specific wear rate for single-reinforced coatings but decreases in the dual-reinforced coatings. These results indicate that both dual-reinforcement and heat treatment are required for improvements in the mechanical and tribological properties of Al nanocomposites.https://www.mdpi.com/2504-4494/7/1/32cold sprayboron nitride nanoplateletsaluminum metal matrix compositesdual-reinforced coatings |
| spellingShingle | Kia Min Phua Thomas Stapel Troy Y. Ansell Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al Coatings Journal of Manufacturing and Materials Processing cold spray boron nitride nanoplatelets aluminum metal matrix composites dual-reinforced coatings |
| title | Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al Coatings |
| title_full | Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al Coatings |
| title_fullStr | Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al Coatings |
| title_full_unstemmed | Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al Coatings |
| title_short | Effect of Heat Treatment on the Mechanical and Tribological Properties of Dual-Reinforced Cold-Sprayed Al Coatings |
| title_sort | effect of heat treatment on the mechanical and tribological properties of dual reinforced cold sprayed al coatings |
| topic | cold spray boron nitride nanoplatelets aluminum metal matrix composites dual-reinforced coatings |
| url | https://www.mdpi.com/2504-4494/7/1/32 |
| work_keys_str_mv | AT kiaminphua effectofheattreatmentonthemechanicalandtribologicalpropertiesofdualreinforcedcoldsprayedalcoatings AT thomasstapel effectofheattreatmentonthemechanicalandtribologicalpropertiesofdualreinforcedcoldsprayedalcoatings AT troyyansell effectofheattreatmentonthemechanicalandtribologicalpropertiesofdualreinforcedcoldsprayedalcoatings |