Synthesis of magnesium metallic matrix composites and the evaluation of aluminum nitride addition effect

• Published in: Journal of alloys and compounds 2016-04, Vol.663, p.407-412
• Main Authors: Falcon-Franco, L., Rosales, I., García-Villarreal, S., Curiel, F.F., Arizmendi-Morquecho, A.
• Format: Article
• Language: English
• Subjects: Aluminum nitride; Bearing steels; Chromium steels; Disks; Hardness tests; Magnesium; Magnesium base alloys; Mechanical properties; Mechanochemical processing; Metal matrix composites; Scanning Electron Microscopy SEM; Wear resistance
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2015.12.078

Metallic matrix composites (MMC) have been successfully fabricated using Mg-AZ91E alloy and AlN as reinforcement by pressure-less self-infiltration technique. Mechanical characterization such as Young Modulus and hardness test evaluations have shown a positive strengthening behavior on the composite, superior to the matrix alloy. The samples were worn by using a tribometer pin-on- disk system and a counter part of bearing 100Cr6 Steel. Wear resistance was evaluated under dry sliding condition at different loads. Wear mechanisms of the composites are basically abrasive-oxidative. The wear resistance in all cases was better at low loads for the composite Mg AZ91E/AlN and for the unreinforced Mg AZ91E alloy at 5 N. •Metallic matrix composites (MMC) have been successfully fabricated using Mg-AZ91E alloy and AlN as reinforcement by pressure-less self-infiltration technique.•Mechanical properties shown an improved behavior.•Tribological studies have shown a positive potential of application.