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A new insight on induced-tribological behaviour of hypereutectic Al-Si alloys manufactured by selective laser melting

Article dans une revue avec comité de lecture
Auteur
KANG, Nan
564968 Northwestern Polytechnical University (CHINA)
EL MANSORI, Mohamed
211915 Mechanics surfaces and materials processing [MSMP]
301080 Texas A&M University [College Station]

URI
http://hdl.handle.net/10985/18720
DOI
10.1016/j.triboint.2019.04.035
Date
2019
Journal
Tribology International

Résumé

In this work, the tribological behaviour of selective laser melting (SLM) processed hypereutectic Al-Si alloy is investigated by the ball on disc test with focus on the effect of silicon content (18 and 50 wt %). Different from the conventional casted sample, the SLM processed sample shows an ultra-fine microstructure with silicon size inferior to 5 μm. Indeed, the SLM processed hypereutectic Al-Si alloy illustrates a pseudo-eutectic microstructure consisted by supersaturated Al(Si) and primary silicon. Both the SLM processed Al-18Si and Al-50Si presents low wear rate about of 7.0 and 8.1◊10−4 mm3/(N◊m) respectively. Moreover, the wear mechanisms of conventional casted and SLM processed hypereutectic Al-Si alloys are compared and discussed.

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  • Laboratoire Mechanics, Surfaces and Materials Processing (MSMP)

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    Article dans une revue avec comité de lecture
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    Article dans une revue avec comité de lecture
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    Article dans une revue avec comité de lecture
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    Article dans une revue avec comité de lecture
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