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Dependence of fatigue life on the surface integrity in the machining of 2024-T351 aluminium alloy — unlubricated conditions

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Abstract

An experimental investigation was conducted to study the dependence of fatigue life on the surface integrity in the machining of 2024-T351 aluminium alloy under dry unlubricated conditions. Cutting speeds ranging from 100 to 250 ft min−1 (30.48 to 76.2 m min−1 and tool rake angles ranging from 10 to 30° were used. The results of the investigation show that the damage in the surface due to machining consists of a wide variety of defects such as cracks, long straight grooves, cavities, microcracks and macrocracks, and severe plastic deformation, etc. The severity of the damage decreases with an increase in the cutting speed and tool rake angle. An increase in the cutting speed or tool rake angle resulted in an increase in the fatigue life of the specimen.

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Authors and Affiliations

  1. School of Engineering and Architecture, Tuskegee Institute, 36088, Tuskegee, Alabama, USA

    S. Jeelani & M. Musial

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  1. S. Jeelani
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  2. M. Musial
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Jeelani, S., Musial, M. Dependence of fatigue life on the surface integrity in the machining of 2024-T351 aluminium alloy — unlubricated conditions. J Mater Sci 21, 155–160 (1986). https://doi.org/10.1007/BF01144714

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  • DOI: https://doi.org/10.1007/BF01144714

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