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Mechanical properties of commercially pure aluminium subjected to repetitive bending and straightening process

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Abstract

The feasibility of using the Repetitive Bending and Straightening (RBS) process to improve the mechanical properties of commercial purity aluminium has been investigated. RBS was carried out by bending with a U-bending die of 10 mm radius followed by straightening between flat dies. The ultimate tensile strength (UTS) and yield strength (YS) slightly increased with increasing number of passes. The maximum UTS of 84 MPa and YS of 68 MPa were obtained after four passes and % elongation to failure decreased from 46% to 35% after four passes. The RBS processed Al showed poor improvement in mechanical properties as compared to other SPD processes. Repetitive bending and straightening process is therefore not an effective process to introduce fine grained structures in metals or alloys.

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Authors and Affiliations

  1. BK21 Education Center for Advanced Intelligent Components and Materials, Chungnam National University, Yuseong, Daejeon, 305-764, Korea

    A. Krishnaiah & H. S. Kim

  2. Department of Mechanical Engineering, University College of Engineering (Autonomous), Osmania University, Hyderabad, 500 007, India

    A. Krishnaiah

  3. Department of Metallurgical and Materials Engineering, Indian Institute of Technology Madras, Chennai, 600 036, India

    U. Chakkingal

  4. Department of Nanomaterials Engineering, Chungnam National University, Yuseong, Daejeon, 305-764, Korea

    H. S. Kim

Authors
  1. A. Krishnaiah
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  2. U. Chakkingal
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  3. H. S. Kim
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Correspondence to A. Krishnaiah.

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Krishnaiah, A., Chakkingal, U. & Kim, H.S. Mechanical properties of commercially pure aluminium subjected to repetitive bending and straightening process. Trans Indian Inst Met 61, 165–167 (2008). https://doi.org/10.1007/s12666-008-0032-3

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  • DOI: https://doi.org/10.1007/s12666-008-0032-3

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