Enhancing High-Temperature Fatigue Performance of AA2024-T4 Alloy Through Shot Peening: A Comprehensive Numerical Simulation

Abstract

This research is part of a series of previous studies aiming to advance technology for aluminum alloys, particularly focusing on AA2024-T4 alloy. The main objective encompassed predicting the fatigue life of a standard specimen under varying experimental conditions associated with the shot peening process. The study delved into forecasting the fatigue life stemming from the cyclic impacts of shots, followed by an endeavor to enhance the specimen’s surface longevity through numerical simulation techniques under varying temperatures, including room and high temperatures. The study predicted the fatigue life resulting from cyclic shot impacts, followed by an attempt to improve the specimen’s surface longevity using numerical simulation techniques under different temperatures, including ambient and elevated temperatures. Interestingly, the research also revealed that static stress becomes apparent after the first 10⁶ cycles, consistent with the results observed in different test cases with different forces applied. Indeed, to guarantee the validity of the results, the interpretations and conclusions drawn have been rigorously validated both at room temperature and at an elevated temperature of 250°C. In summary, this research successfully investigates the numerical analysis of the structure of the AA2024-T4 alloy, providing valuable information on its fatigue behavior at different temperatures.