EVALUATION OF HIGHT PURITY ALUMINIUM AFTER ASYMMETRIC ROLLING AT AMBIENT AND CRYOGENIC TEMPERATURES

Authors

  • Dušan Šimčák
  • Tibor Kvačkaj
  • Róbert Kočiško
  • Róbert Bidulský
  • Ján Kepič
  • Viktor Puchý

DOI:

https://doi.org/10.12776/ams.v23i2.928

Keywords:

pure aluminium, asymmetric rolling, microstructure, mechanical properties

Abstract

Ultrafine grained materials are capable of superplastic elongation at strain rates faster than those currently employed for commercial superplastic forming operations. However, such operations require the material in the form of thin sheets. Asymmetric rolling (ASR), as one of severe plastic deformation (SPD) methods, was used to make ultra-fined grain materials with enhanced performance. This work show effect of the deformation paths on micro-hardness and mechanical properties changing during asymmetric rolling of pure aluminium. In our case, the asymmetric condition was introduced by using different diameters with a ratio of upper and bottom roll 2,4. The thickness of samples was reduced about 20% - 40% at ambient temperature and at cryogenic temperature. Asymmetric rolling at cryogenic temperature (ASR-C) provides greater strength tensile properties than rolling at ambient temperature (ASR-A).

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Published

2017-06-30

How to Cite

Šimčák, D. ., Kvačkaj, T. ., Kočiško, R., Bidulský, R. ., Kepič, J. ., & Puchý, V. . (2017). EVALUATION OF HIGHT PURITY ALUMINIUM AFTER ASYMMETRIC ROLLING AT AMBIENT AND CRYOGENIC TEMPERATURES. Acta Metallurgica Slovaca, 23(2), 99–104. https://doi.org/10.12776/ams.v23i2.928

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