Tribologically constructed gradient structures unlock exceptional wear resistance in LPBF-fabricated Al–La–Mg–Mn alloy
Source abstract
Abstract
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 Al 2 O 3 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.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced materials and composites · Metal and Thin Film Mechanics · High Entropy Alloys Studies
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