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Fatigue Characterization and Fractographic Analysis of Aluminium 6063 Alloy
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Author(s): Sreearravind M. (School of Mechanical Engineering, SASTRA University (Deemed), India), Ramesh Kumar S. (School of Mechanical Engineering, SASTRA University (Deemed), India)and Ahilan C. (Department of Mechanical Engineering, Sri Venkateswara College of Engineering and Technology, India)
Copyright: 2022
Pages: 19
Source title:
Handbook of Research on Advancements in the Processing, Characterization, and Application of Lightweight Materials
Source Author(s)/Editor(s): Kaushik Kumar (Birla Institute of Technology, India), B. Sridhar Babu (CMR Institute of Technology, India)and J. Paulo Davim (University of Aveiro, Portugal)
DOI: 10.4018/978-1-7998-7864-3.ch008
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Abstract
Aluminium and its alloy are widely employed in various automobile and aircraft areas because of their unique specific strength and formability. Al alloys that have been employed in aerospace structural components will undergo dynamic loading, which leads to fatigue due to mechanical stress and thermal conditions. Considering studies toward the low cycle fatigue behaviour of Al alloys are significantly narrowed, this chapter sighted to the analysis of fatigue behaviour of Al 6063 alloy at the various total strain amplitude (TSA) of 0.4% and 0.8%, which performed through the low cycle fatigue testing machine at the frequency rate of 0.2 Hz. The test results show that for 0.4% TSA, the number of cycles to failure (N) is 1786, whereas as the TSA increases, N got reduced. For 0.8% TSA, the cycle to failure is 291 and samples undergone cyclic softening during the test. The rate of cyclic plastic strain raised up with the increase in the TSA. Crack propagation was observed along with the quasi-cleavage fracture for 0.4% TSA and cleavage fracture for 0.8% TSA.
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