Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Aluminum alloys

Experimental Study on the Effect of Temperature on the Fatigue Endurance Limit of Two AL Alloys

ad Abbas Al-Saraf

Engineering and Technology Journal, 2012, Volume 30, Issue 6, Pages 1048-1057

In this work , an experimental study to obtain the fatigue endurance limit for two aluminum alloy , 2024 and 5052 , were carried out at stress ratio R=-1 and rotary bending tests . The fatigue tests were performed at RT, 100 °C, 200 °C and 300 °C in order to establish the S–N curve equations. The fatigue endurance limits for both alloys at different temperature conditions were calculated at 107 cycles
from the empirical S-N curve equations. It was found that the fatigue endurance limit decrease with increasing the temperature. Also the reduction percentage in fatigue endurance limit for 5052 Al. alloy was higher than that of 2024 Al. alloy.

Wettability of Al2O3 by Aluminum and Al-Mg Alloys

M. S. Waheed; Ali I. Salih

Engineering and Technology Journal, 2010, Volume 28, Issue 9, Pages 1771-1777

The wettablity at a liquid of pure-Al or Al-Mg alloys/ Al2O3 interface was
evaluated by the sessile drop method at 700oC and with a vacuum pressure of
10-4Pa. The value of contact angle varies (decreases) with time of contact with
Al2O3 substrate. The reduction in θ of the Al-Mg alloy was proportional to the
reduction in surface tension γlv of Al, and to reactions that took place at the Alalloy/
Al2O3 interface.