Fractographic analysis of the overload effect on fatigue crack growth in 2024-T3 and 7075-T6 Al alloys

作     者：A.Albedah B.Bachir Bouiadjra S.M.A.K.Mohammed F.Benyahia A. Albedah;B. Bachir Bouiadjra;S.M.A.K. Mohammed;F. Benyahia

作者机构：Mechanical Engineering DepartmentCollege of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia LMPMDepartment of Mechanical EngineeringUniversity of Sidi Bel AbbesBP 89CitéBen M’hidiSidi Bel Abbes 22000Algeria Department of Mechanical and Industrial EngineeringRyerson UniversityTorontoOntario M5B 2K3Canada 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2020年第27卷第1期

页      面：83-90页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the Deanship of Scientific Research at King Saud University for funding the work through the research group (No. RGP-VPP-035) 

主　　题：fatigue crack growth overload retardation fractography crack tip plasticity 

摘      要：The effect of single overload on the fatigue crack growth in 2024-T3 and 7075-T6 Al alloys was *** tests under constantamplitude loading with overload peak were carried out on V-notched *** analysis was used as a principal approach to explain the crack growth retardation due to the *** electron microscopy(SEM)analyses were conducted on the fractured surface of failed specimens to study the retardation *** obtained results show that the overload application generates a plastic zone in both aluminum *** generated plastic zone is three times larger in the case of 2024-T3 compared to 7075-T6,and thus,a significant crack retardation was induced for *** retardation effect due to the overload for 2024-T3 and 7075-T6 lasted for about 10 mm and 1 mm,respectively,from the point of overload application.