Heat Treatment and Cryotreatment Effect on the Fatigue Crack Growth (FCG) in Aluminium 2024

Abstract

Abstract

Al 2024 is commonly used in aircraft components, especially for the critical parts like wing and fuselage components. In the present investigation, Al 2024 has been selected subjected heat treatments for the study of fatigue crack growth (FCG) subjected to fatigue loads. Specimens were subjected to fatigue crack growth as per ASTM E-647 standards and the results of FCG were compared. NASGRO software was employed to predict the FCG in metals, and was validated using the experimental results of FCG test. Microstructure analysis of metallic specimens was also carried out to study the microstructural changes in metallic specimens undergoing heat treatment and cryotreatment. From the present investigation, it has been observed that cryogenic treatment and heat treatments play vital role in improving fatigue life of Al 2024 components.

Keywords: Al 2024, fatigue crack growth (FCG), annealing, cryogenic treatment, NASGRO.

Cite this Article

Aruna Kumara PC, Dinesh P, Naveen Kumar BK. Heat Treatment and Cryotreatment Effect on the Fatigue Crack Growth (FCG) in Aluminium 2024. Journal of Thermal Engineering and Applications. 2019; 6(1): 5–13p.