Effect of prolonged heating at 130 degrees C on fatigue crack propagation of 2024 Al alloy in three orientations

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Sarioglu F., Orhaner F.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, vol.248, pp.115-119, 1998 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 248
• Publication Date: 1998
• Doi Number: 10.1016/s0921-5093(98)00504-8
• Journal Name: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.115-119
• Keywords: aging, 2024 Al alloy, fatigue crack propagation, MICROSTRUCTURE, PARTICLES
• Middle East Technical University Affiliated: No

Abstract

An AI-Cu alloy 2024 received in T3 condition (cold worked after solutionizing and natural aging) was heated at 130 degrees C for 100 and 1000 h. Fatigue crack growth tests were carried out before and after heating with center cracked tension specimens machined in L-T, T-L and 60 degrees orientations. Fracture surfaces were studied by means of scanning electron microscopy. It was found that the fatigue crack growth rate depends on the test direction in T3 condition. The orientation effect seemed to be lost after prolonged heating at 130 degrees C. (C) 1998 Elsevier Science S.A. All rights reserved.