Tribologically constructed gradient structures unlock exceptional wear resistance in LPBF-fabricated Al–La–Mg–Mn alloy
This work explored the wear behavior of Al–La–Mg–Mn alloy fabricated via laser powder bed fusion (LPBF). Notably, sliding at 200 °C induced the formation of gradient structures transitioning from an amorphous glaze layer with streamlined nanograins, to elongated nanograins with Al2O3 particles, to e...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425020423 |
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| Summary: | This work explored the wear behavior of Al–La–Mg–Mn alloy fabricated via laser powder bed fusion (LPBF). Notably, sliding at 200 °C induced the formation of gradient structures transitioning from an amorphous glaze layer with streamlined nanograins, to elongated nanograins with Al2O3 particles, to elongated sub-micron grains, to the as-printed microstructures. This innovative structure significantly enhanced wear resistance at 200 °C by mitigating interface stress and improving load distribution, surpassing the one observed at room temperature. These findings revealed the critical role of multiple-layer strengthening structures in improving wear resistance and highlighted the potential of LPBF-fabricated Al–(La, Ce) alloys in demanding environments. |
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| ISSN: | 2238-7854 |