Wear Behavior of In Situ Mg₂Si Particle-Dispersed Magnesium Alloys

Abstract:

Magnesium alloys, in which the in-situ Mg2Si particles were dispersed, were fabricated by a casting process, and the dry sliding wear behavior of the alloys was investigated. Optical microscopy revealed that the polygonal Mg2Si particles were homogeneously dispersed in the alloys. Mg2Si particle volume fractions in the alloys were 7 and 11 vol%. Although the wear loss of the alloy decreased due to the particle-dispersion, there was no difference in the wear loss between the alloys with different volume fractions. The worn surfaces of the particle-dispersed alloys were covered with the crumbled Mg2Si particles, which would prevent seizure between the alloy and the steel counterpart, leading to an improvement in the wear resistance of the alloy. The particle-dispersion slightly decreased the scatter of the coefficient of friction during the wear for the low sliding speed and load, but the effect of the dispersion was not clearly observed for the high speed and load.

• Periodical: Materials Science Forum (Volume 909)
• Pages: 100-105
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.909.100
• Online since: November 2017
• Authors: Kazunori Asano
• Keywords: Casting, In Situ Formation, Magnesium, Mg₂Si, Wear

References

[1] E. Schmid, K. Oldenburg and G. Frommeyer: Z. Metallkde. 81(1990) 809-815.

[2] M. E. Moussa, M. A. Waly and A. M. El-Sheikh: J. Alloy Compd. 615(2014) 576-581.

[3] S. Tang, J. Zhou, C. Tian and Y. Yang: Trans. Nonferrous Met. Soc. China 21(2011) 1932-(1936).

[4] R. Alizadeh and R. Mahmudi: J. Alloy Compd. 509(2011) 9195-9199.

[5] H. Yan, Y. Hu and X. Wu: Trans. Nonferrous Met. Soc. China 20(2010) 411-415.

[6] F. Mirshahi and M. Meratian: Mater. Design 33(2012) 557-562.

[7] J. Hou, C. Li and X Liu: J. Alloy Compd. 509(2011) 735-739.

[8] B. Çiçek, H. Ahlatçı and Y. Sun: Mater. Design 50(2013) 929-935.

[9] K. Asano and H. Yoneda: Mater. Trans. 48(2007) 1469-1475.