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2015 | Vol. 76, nr 2 | 129--133
Tytuł artykułu

Mechanical and microstructural properties of Mg-based AZ31 alloy processed by ARB

Wybrane pełne teksty z tego czasopisma
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose: Severe plastic deformation techniques are known to produce materials with ultrafine-grained structures and enhanced mechanical properties. In magnesium alloys, these techniques improve both strength and ductility, as the latter is normally low at room temperature. In the present experiment, properties of rolled products after two rolling passes were examined. Rolling was carried out at 350°C and 400°C. At 350°C, the rolled sheets did not bond. Mechanical properties of the rolled products were determined. Microhardness profiles were measured to map the deformation distribution. The impact of the number of passes on mechanical properties was evaluated. It was found that with increasing number of passes, ultimate strength yield strength improve, and elongation does not decrease. Metallographic examination of the rolled products was carried out to assess the quality of the resulting joint. In certain locations, the joint was not distinctly visible, which proves its high quality. Design/methodology/approach: The evaluation was performed by simple tensile testing and light microscopy. The first conclusions were derived from the determined mechanical properties and based on analogies in available publications on a similar topic. Findings: This study confirmed that the SPD process improves mechanical properties and does not impair the ductility of the material. With increasing number of passes, the mechanical properties of the sample become more uniform.
Wydawca

Rocznik
Strony
129--133
Opis fizyczny
Bibliogr. 8 poz.
Twórcy
autor
autor
  • COMTES FHT a.s., Průmyslová 995, Dobřany 334 41, Czech Republic
autor
  • COMTES FHT a.s., Průmyslová 995, Dobřany 334 41, Czech Republic
autor
  • COMTES FHT a.s., Průmyslová 995, Dobřany 334 41, Czech Republic
Bibliografia
  • [1] J. Zrnik, S.V. Dobatkin, T. Kovarik, J. Dzugan, Ultrafine grain structure development in steels with different carbon content subjected to severe plastic deformation, The Minerals, Metals and Materials Society-3rd International Conference on Processing Materials for Properties 2008, PMP III; Bangkok; Thailand, ISBN: 978-161567423-7.
  • [2] J. Zrnik, S.V. Dobatkin, T. Kovarik, J. Dzugan, Ultrafine grain structure development in steels with different carbon content subjected to severe plastic deformation, Materials Science Forum 638-642 (2010) 2013-2018.
  • [3] R.Z. Valiev, I.V. Alexandrov, Bulk Nanostructured Metallic Materials: Production, Structure and Properties, Akademkniga Pub., Moscow, 2007, (in Russian).
  • [4] M. Zhan, Y.Y. Li, W.P. Chen, Improving mechanical properties of Mg-Al-Zn alloy sheets through accumulative roll-bonding, The Transactions of Nonferrous Metals Society of China 18 (2008) 309-314.
  • [5] B.L. Mordike, T. Ebert, Magnesium propertiesapplications-potential Journal of Materials Science and Engineering A302 (2001) 37-45.
  • [6] Y. Saito, H. Utsunomiya, N. Tsuji, T. Sakai, Novel ultra-highstraining process for bulk materials development of the accumulativeroll-bonding (ARB) process Acta Materialia 47/2 (1999) 579-583.
  • [7] J. Gubiš, Properties of ultrafine steel prepared by severe plastic deformation, Institute of Chemical Technology in Prague (in Czech).
  • [8] K Kubota, M. Mabuchi, K. Higashi, Processing and mechanical properties of fine-grained magnesium alloys, Materials Science Forum 34 (1999) 2255-2262.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.baztech-2dab641e-92f8-43ad-91a7-14339843e6ad
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