Authors : Hussain J.M. Al-Alkawi, Maha N. Abdulridah and Raad H. Majid
Abstract: The influence of reinforced ratio 6 wt.% of alumina particles of Al2O3 size with aluminum alloy 7100 metal matrix on constant fatigue strength and life at 200°C was studied. The experimental results revealed that the fatigue strength improvement factor FSIF for the composite was obtained to be from 0.84-4.84. The FSIF for the nanocomposite tested at 200°C exhibited for 103 and 105 cycles, respectively, at Room Temperature (RT) and the net FSIF was recorded as 4, the value of 7.29-7.4% at 103 and 105 cycles, respectively with 0.11 net FSIF. The addition of nanoreinforced material resulted to rais the fatigue endurance limit at 107 cycles from 47-51.8 MPa and from 46-50.86 MPa at RT and 200°C, respectively.
Hussain J.M. Al-Alkawi, Maha N. Abdulridah and Raad H. Majid, 2019. Fatigue Strength of Nanocomposite Under High Temperature. Journal of Engineering and Applied Sciences, 14: 4742-4746.