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Study of fatigue behaviour of 7475 aluminium alloy

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Abstract

Fatigue properties of a thermomechanically treated 7475 aluminium alloy have been studied in the present investigation. The alloy exhibited superior fatigue life compared to conventional structural aluminium alloys and comparable stage II crack growth rate. It was also noticed that the fatigue crack initiated from a surface grain and the crack extension was dominated by ductile striations. Analysis also revealed that this alloy possessed fracture toughness and tensile properties superior to that noticed with other structural aluminium alloys. Therefore the use of this alloy can safely reduce the overall weight of the aircraft.

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Authors and Affiliations

  1. Department of Metallurgical Engineering, Regional Engineering College, 769 008, Rourkela, India

    B. B. Verma, J. D. Atkinson & M. Kumar

  2. School of Engineering, Sheffield Hallam University, S1 1WB, Sheffield, UK

    J. D. Atkinson

Authors
  1. B. B. Verma
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  2. J. D. Atkinson
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  3. M. Kumar
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Verma, B.B., Atkinson, J.D. & Kumar, M. Study of fatigue behaviour of 7475 aluminium alloy. Bull Mater Sci 24, 231–236 (2001). https://doi.org/10.1007/BF02710107

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  • DOI: https://doi.org/10.1007/BF02710107

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