The Temperature-analysis Influence on Fatigue Crack Growth Behaviour of Magnesium Alloy

  • Authors

    • M. A. Fauthan
    • S. Abdullah
    • M. F. Abdullah
    https://doi.org/10.14419/ijet.v7i4.36.29359
  • AZ31B, fatigue, cyclic loading, dissipated energy magnesium alloy

  • In this study, the temperature-based mechanical fatigue crack growth of a magnesium alloy was investigated. Since fatigue is an irreversible process and experience temperature change, the fatigue crack growth behaviour of AZ31B was investigated based on the temperature trend. For this objective, compact tension tests were carried out by applying different stress levels to the specimen. The temperature trend was monitored via an infrared sensor. During the cyclic load applied to metallic materials, mechanical energy is expended to bring about plastic deformations at a macroscopic level. At the point of fracture, there was a temperature increase of 2.2ËšC when 5.12MPa stress level is applied. This temperature increase was due to the generation of thermal energy from the dislocation motion and grain friction on the material under cyclic loading which has caused an increase in the internal molecular average energy of the material. Thus, the temperature trend could be a new indication of fatigue crack growth behaviour.

     


     

  • References

    1. [1] Z. F. Yan et al., “Temperature evolution mechanism of AZ31B magnesium alloy during high-cycle fatigue process Address : College of Materials Science and Engineering , Taiyuan University of,†2014.

      [2] H. X. Zhang, G. H. Wu, Z. F. Yan, S. F. Guo, P. D. Chen, and W. X. Wang, “An experimental analysis of fatigue behavior of AZ31B magnesium alloy welded joint based on infrared thermography,†Mater. Des., vol. 55, pp. 785–791, 2014.

      [3] M. Liakat and M. M. Khonsari, “An experimental approach to estimate damage and remaining life of metals under uniaxial fatigue loading,†J. Mater., vol. 57, pp. 289–297, 2014.

      [4] M. Naderi, M. Amiri, and M. M. Khonsari, “On the thermodynamic entropy of fatigue fracture,†Proc. R. Soc. A Math. Phys. Eng. Sci., vol. 466, no. 2114, pp. 423–438, 2010.

      [5] S. Guo et al., “Thermographic analysis of the fatigue heating process for AZ31B magnesium alloy,†Mater. Des., vol. 65, pp. 1172–1180, 2015.

      [6] L. Xiao-qing, Z. Hong-xia, Y. Zhi-feng, W. Wen-xian, Z. Ya-guo, and Z. Qian-ming, “Fatigue life prediction of AZ31B magnesium alloy and its welding joint through infrared thermography,†Theor. Appl. Fract. Mech., vol. 66–67, pp. 46–52, 2013.

      [7] N. I. I. Mansor, S. Abdullah, and A. K. Ariffin, “Discrepancies of fatigue crack growth behaviour of API X65 steel †,†vol. 31, no. 10, pp. 4719–4726, 2017.

      [8] Z. Xu, H. Zhang, Z. Yan, F. Liu, P. K. Liaw, and W. Wang, “Three-point-bending fatigue behavior of AZ31B magnesium alloy based on infrared thermography technology,†Int. J. Fatigue, vol. 95, pp. 156–167, 2017.

      [9] G. Meneghetti and M. Ricotta, “The heat energy dissipated in a control volume to correlate the crack propagation rate in stainless steel specimens,†vol. V, pp. 299–306, 2017.

  • Downloads

  • How to Cite

    A. Fauthan, M., Abdullah, S., & F. Abdullah, M. (2018). The Temperature-analysis Influence on Fatigue Crack Growth Behaviour of Magnesium Alloy. International Journal of Engineering & Technology, 7(4.36), 1502-1505. https://doi.org/10.14419/ijet.v7i4.36.29359