Open AccessImprovement of Fatigue Property in High Strength Aluminum Alloy by Shot Peening
Author(s) -
Hussain J. Mohammed Al-Alkawi,
Mohammed Jawad Kadhim
Publication year - 2012
Language(s) - English
Resource type - Journals
ISSN - 1858-7313
DOI - 10.52981/fjes.v6i1.16
Subject(s) - shot peening , materials science , fatigue limit , alloy , peening , shot (pellet) , stress (linguistics) , aluminium , laser peening , metallurgy , structural engineering , composite material , residual stress , engineering , linguistics , philosophy
Shot peening process has both the beneficial and detrimentaleffects; therefore, it is difficult and time–consuming task to determine the optimized process parameters based on the fatiguelife. In this study the fatigue of 7001-T6 high strength aluminum alloy has been investigate before and after a shot peeningis beneficial for a treatment to investigate where a shot peening is beneficial for a component with this combination. The effect of 12 min. shot peening on the fatigue behavior of the material used gave an increase in the fatigue life of up to 2.49 times depending on the applied stress, and a 28.34% increase in the endurance limit of the material. Cumulative fatigue damage was conducted under low-high and high-low stress amplitude .The fatigue life prolonging factor (FLPF) was calculated for different stress amplitudes and it was found that this parameter is an indicator for prolonging the fatigue life.