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Influence of Controlled Shot Peening on Mechanical Properties and Compressive Residual Stress of Al6061-TiB2 Composite

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Abstract

Most of the Aerospace and Automobile components fail due to surface cracks, fatigue and higher tensile residual stresses. Shot peening is one of the cost economic surface treatment processes used to enhance mechanical properties by avoiding early failures. Shots of round shape are made to impinge on the component which causes plastic deformation. Due to the strain hardening effect, the shot peening induces compressive residual stresses (CRS) on the surface of the part. Repetitive impact of shots modifies the crystalline structure by causing compactness of the atoms. This beneficial residual stress prevents failure of components. In this study, air blast shot peening machine was used to conduct a shot peening process with optimized parameters on Al6061-TiB2 developed Composites. After conducting the shot peening process, various mechanical properties such as hardness, surface roughness, microstructure, fatigue life, and compressive residual stresses were analyzed. It is evident that the controlled shot peening process enhances mechanical properties.

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Authors and Affiliations

  1. Department of Mechanical Engineering, ATME College of Engineering, Mysuru, 570028, India

    S. Suresh Kumar

  2. Department of Mechanical Engineering, Sri Jayachamarajendra College of Engineering, Mysuru, 570006, India

    G. Mallesh

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  1. S. Suresh Kumar
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  2. G. Mallesh
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Correspondence to S. Suresh Kumar.

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Suresh Kumar, S., Mallesh, G. Influence of Controlled Shot Peening on Mechanical Properties and Compressive Residual Stress of Al6061-TiB2 Composite. J. Inst. Eng. India Ser. C 103, 813–819 (2022). https://doi.org/10.1007/s40032-022-00823-x

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  • DOI: https://doi.org/10.1007/s40032-022-00823-x

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