Wear Behavior of a Heat-Treatable Al-3.5Cu-1.5Mg-1Si Alloy Manufactured by Selective Laser Melting

Pei Wang, Yang Lei, Jun Fang Qi, Si-Jie Yu, Rossitza Setchi, Ming Wei Wu, Jürgen Eckert, Hai Chao Li, Sergio Scudino

Research output: Contribution to journalArticleResearchpeer-review

Abstract

In this study, the wear behavior of a heat-treatable Al-7Si-0.5Mg-0.5Cu alloy fabricated by selective laser melting was investigated systematically. Compared with the commercial homogenized AA2024 alloy, the fine secondary phase of the SLM Al-Cu-Mg-Si alloy leads to a low specific wear rate (1.8 ± 0.11 × 10−4 mm3(Nm)−1) and a low average coefficient of friction (0.40 ± 0.01). After the T6 heat treatment, the SLM Al-Cu-Mg-Si alloy exhibits a lower specific wear rate (1.48 ± 0.02 × 10−4 mm3(Nm)−1), but a similar average coefficient of friction (0.34 ± 0.01) as the heat-treated AA2024 alloy. Altogether, the SLM Al-3.5Cu-1.5Mg-1Si alloy is suitable for the achievement of not only superior mechanical performance, but also improved tribological properties.
Original languageEnglish
Article number7048
Number of pages11
Journal Materials
Volume14.2021
Issue number22
DOIs
Publication statusPublished - 1 Nov 2021

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

  • Al-Si-Cu-Mg alloy
  • Heat treatment
  • Microstructure
  • Selective laser melting
  • Wear behavior

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