Incremental ECAP as a method to produce ultrafine grained aluminium plates

Lewandowska, Malgorzata and Chrominski, Witold and Lipinska, Marta and Olejnik, Lech and Rosochowski, Andrzej (2016) Incremental ECAP as a method to produce ultrafine grained aluminium plates. Key Engineering Materials, 710. pp. 59-64. ISSN 1013-9826 (https://doi.org/10.4028/www.scientific.net/KEM.710...)

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Abstract

In this work, we propose a new approach to producing ultrafine grained plates using a modified ECAP method, namely incremental ECAP. Unlike conventional ECAP, incremental ECAP works step by step whereby deformation and feeding are performed with two different tools acting asynchronously. Incremental processing reduces forces and allows to process relatively large billets. The major advantage of this technique is that the specimens are in the form of plates with a rectangular shape, which makes them suitable for further processing, e.g. via deep drawing. This paper reports a study on microstructure development, mechanical properties and their anisotropy in aluminium plates processed by means of incremental ECAP. Eight passes applied (with the accumulated strain of 9.2) with the rotation about the Z axis brought about the reduction in the grain size down to 600 nm with the 80% fraction of high angle grain boundaries and a very homogenous equiaxial microstructure. This, in turn, resulted in a significant increase in mechanical strength with the ultimate tensile strength reaching 200 MPa and, more importantly, very low anisotropy with respect to the rolling direction.

ORCID iDs

Lewandowska, Malgorzata, Chrominski, Witold, Lipinska, Marta, Olejnik, Lech and Rosochowski, Andrzej ORCID logoORCID: https://orcid.org/0000-0001-7896-8167;
  • Item type:Article
    ID code:60556
    Dates:
    Date
    Event
    23 September 2016
    Published
    28 June 2016
    Accepted
    Notes:© 2016 Trans Tech Publications, Switzerland Lewandowska, M., Chrominski, W., Lipinska, M., Olejnik, L., & Rosochowski, A. (2016). Incremental ECAP as a method to produce ultrafine grained aluminium plates. Key Engineering Materials, 710, 59-64. DOI: 10.4028/www.scientific.net/KEM.710.59
    Subjects:Technology > Manufactures
    Department:Faculty of Engineering > Design, Manufacture and Engineering Management
    Depositing user: Pure Administrator
    Date deposited:28 Apr 2017 11:10
    Last modified:18 Nov 2024 20:07
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/60556
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