- Turkish Journal of Engineering and Environmental Sciences
- Vol: 26 Issue: 3
- Low Cycle Fatigue Properties of 2124/SiCp Al-Alloy Composites
Low Cycle Fatigue Properties of 2124/SiCp Al-Alloy Composites
Authors : İlyas UYGUR
Pages : 265-274
View : 5 | Download : 1
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :In this article, powder metallurgy processed metal matrix composites are tested under the strain control loading conditions. The influence of volume fraction (17 and 25 vol%), particulate size (2.5 and 15 m m) of reinforcement particles and strain ratio (R=0, R=0.5 and R= -1) are examined for 2124 Al-alloy-T4 composites. Increasing the content of SiCp results in the degradation of strain control fatigue properties. The monotonic and cyclic stress-strain response of the 2124Al -- (25 vol % 2.5 m m) SiCp composite was significantly altered by strain ratio values.Fatigue cracks frequently initiated from intensively stress concentrated regions. Increasing volume fraction and particle sizes result in early crack initiation.Keywords : Composites, Fatigue, Low cycle fatigue