Open AccessImprovement of Mechanical Properties of Magnesium (Mg) Matrix Composites Reinforced with Nano Alumina (Al2O3) Particles
Author(s) -
Hayder Muneam Abed Zaid,
Abdul Rahman N. Abed,
Hussain S. Hasan
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/671/1/012162
Subject(s) - materials science , magnesium , ball mill , microstructure , powder metallurgy , volume fraction , composite material , porosity , compressive strength , particle size , nano , metallurgy , chemical engineering , engineering
Nano alumina particle-reinforced magnesium was fabricated by powder metallurgy technique. Powders were mixed by ball milling (without balls) for 6 hours at rotation speed 60 rpm. Then, the powder was compacted at 550 MPa and sintered at 530°C for 2 hours. The magnesium contained 0.25, 0.5, 1, 1.5, 3, and 5 vol. % nano alumina Al 2 O 3 . The physical, mechanical properties and microstructures, such as density, porosity, compressive strength, hardness, wear rate, SEM and EDX, were measured and compared with the values of unmodified pure magnesium samples. The results revealed an improvement with Al 2 O 3 in Mg matrix composites. The greatest improvement in UCS and Hv values were about 197 MPa and 70 Hv at the volume fraction of 3 vol.% Al 2 O 3 respectively. The wear tests showed that wear resistance was increased with the increasing of the reinforcement volume fraction of Al 2 O 3 .