Incremental ECAP as a novel tool for producing ultrafine grained aluminium plates

Lech Olejnik, Witold Chrominski, Andrzej Rosochowski, Marta Lipinska, Malgorzata Lewandowska

Research output: Contribution to journalConference Contribution

10 Citations (Scopus)
183 Downloads (Pure)

Abstract

Conventional equal channel angular pressing is an efficient technique to obtain bulk ultrafine grained materials (UFG) with extraordinary mechanical properties in the form of rods. In this work, an incremental method of ECAP process which allows to obtain thick sheets with UFG structure is presented. Using this method square plates (62 × 62 mm) were obtained. In this case, a combined route – A+ specific B – with 90 degree rotation along plate normal after each pass keeping other planes in the same positions relatively to the channel – has been applied. The efficiency of this methods was proved for technically pure 1050 aluminium. It was processed by incremental ECAP using 8 passes of A+B route. To characterize microstructure visible light microscopy and transmission electron microscopy were used. Mechanical properties were measured by microhardness test. The results obtained showed that the microstructure and mechanical properties of 1050 aluminium alloy processed by incremental ECAP are comparable to conventional ECAP. However, the new processing method broaden the potential applications of UFG materials.
Original languageEnglish
Article number012004
Number of pages10
JournalIOP Conference Series: Materials Science and Engineering
Volume63
Issue number1
Early online date8 Aug 2014
DOIs
Publication statusPublished - 18 Aug 2014
Event6th International Conference on Nanomaterials by Severe Plastic Deformation - The Arsenal , Metz, France
Duration: 30 Jun 20144 Jul 2014
http://www.nanospd6.com/

Keywords

  • ultrafine grained metals
  • severe plastic deformation
  • incremental ECAP
  • novel tool
  • ultrafine grained aluminium plates

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