The Influence of Different Manganese-iron Ratios on the Friction and Wear Properties of Al-10Mg<sub>2</sub>Si Alloy
The study investigated the effect of different manganese-to-iron ratios on the friction and wear performance of Al-10Mg2Si alloy. The results showed that the as-cast α-Al in the Al-10Mg2Si alloy without manganese and iron phases was relatively coarse, and its eutectic Mg2Si morphology was mostly in the form of long needles and needle-like flakes. When the manganese-to-iron ratio was 0.5, the manganese-iron phases were polygonal and fine granular. As the manganese-to-iron ratio continued to increase, the morphology of the manganese-iron phases became polygonal and nearly spherical, with particle sizes of about 10-12μm, showing a clear coarsening phenomenon. Under the conditions of a load of 40N, a rotation speed of 200r/min, and a wear time of 30min, the alloy not treated with ultrasonic had the least wear scar volume when the manganese-to-iron ratio was 0.5, which was 2.635mm³, showing the best wear resistance relatively, and the worn surface exhibited abrasive wear accompanied by slight adhesive wear.
References
- Li Q, Xia T, Lan Y, Li P, Lu F.Effects of rare earth cerium addition on the microstructure and tensile properties of hypereutectic Al-20%Si alloy[J]. Journal of Alloys and Compounds, 2013, 588(20):97-102
- Wang K Y, Xiang J, Zhao R D, Wu X F, Wu F F. Microstructure refinement and enhanced tensile properties of Al-11Mg2Si alloy modified by erbium[J]. Journal of Alloys and Compounds, 2020, 860(04):158-421.
- Lu L, Nogita K, Dahle A K. Combining Sr and Na additions in hypoeutectic Al-Si foundry alloys[J]. Materials Science and Engineering: A, 2005, 399(01-02): 244-253.
- Nasiri N, Emamy M, Malekan A, Norouzi M H. Microstructure and tensile properties of cast A1-15%Mg2Si composite: Effects of phosphorous addition and heat treatment[J]. Materials Science& Engineering A (Structural Materials: Properties, Microstructure and Processing), 2012, 556(07): 446-453.
- Hadian R, Emamy M, Campbell J. Modification of cast Al-Mg2Si metal matrix composite by Li[J]. Metallurgical & Materials Transactions B, 2009, 40(06): 822-832.