Magnesium alloy-silicon carbide composite fabrication using chips waste. (20th September 2019)

• Record Type: Journal Article
• Authors: Asgari, A.; Sedighi, M.; Krajnik, P.
• Is Part Of: Journal of cleaner production. Volume 232(2019)
• Page Start: 1187
• Page End: 1194
• Publication Date: 2019-09-20
• Subjects: Magnesium -- Composites -- AZ91 -- Chip -- Waste -- Sustainable; Factory and trade waste -- Management -- Periodicals; Manufactures -- Environmental aspects -- Periodicals; Déchets industriels -- Gestion -- Périodiques; Usines -- Aspect de l'environnement -- Périodiques; 628.5
• DOI: 10.1016/j.jclepro.2019.06.018
• Languages: English
• ISSNs: 0959-6526

Abstract

Abstract: Interest in Mg-based composites has grown with their potential use as engineering materials due to having a high strength-to-weight ratio, wear resistance, and creep behavior. While magnesium chips are typically considered as waste on production shop floors, there can be a promising way to fabricate Mg-based composites with carefully distributed reinforcements. This research is concerned with the reuse of AZ91 magnesium-alloy chips to fabricate Mg-based composites. The fabrication process requires to collect and clean magnesium chips and then mix them with SiC particles as reinforcements. Finally, this composition is melted and stirred by a stir casting method to fabricate the AZ91/SiC composites. The results clearly show that not only magnesium chips waste can be reused in a sustainable way, but also that they improve the reinforcement distribution substantially, leading to enhanced mechanical properties so that the composite yield strength increases by 62.7% when adding 5% SiC particles, volume percentage. Moreover, the composites with 5% reinforcements, demonstrate a hardness increase of about 46%.