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INVESTIGATION OF FATIGUE BEHAVIOR USING SURFACE SHOT PEENED TECHNIQUE FOR 2024 – T4 AL-ALLOY | ||
| Iraqi journal of mechanical and material engineering | ||
| Article 1, Volume 16, Issue 2, 2016, Pages 129-142 | ||
| Authors | ||
| Rawaa Hamid Al-Kalali; Hussain J. M. Alalkawi; Shatha M.R. Abdul Jabbar | ||
| Abstract | ||
| The strength and fatigue lifetime of AL alloy 2024-T4 were estimated using flat fatigue specimen and stress ratio R=-1 at room temperature (RT). After fatigue testing,it was found that both fatigue region (low cycle fatigue and high cycle fatigue) was improved after the shoot penning of the surface .This improvement appeared due to the compressive residual stress established at the shoot penned surface . Also, the fatigue life improvement factor was obtained around (6) while the fatigue strength factor was found to be around 26. | ||
| Keywords | ||
| Alloy; fatigue; life and strength; Shot peening | ||
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