Effect of grain size on tensile stress and ductility in Al99.99

E. Kovács-Csetényi, M. Horváth, N. Q. Chinh, I. Kovács

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Abstract

The effect of recrystallized grain size on the tensile stress and ductility of 99.99% purity aluminium was investigated at room temperature. It was proved that the grain size dependence of flow stress follows a modified Hall-Petch equation with coefficients depending linearly on ε1/2 up to the stability limit. The uniform strain can also be described by a linear dependence on d-1/2 according to which the uniform elongation increases with increasing grain size. The post-uniform elongation changes inversely to that of the uniform one accompanied by the decrease of the strain rate sensitivity.

Original languageEnglish
Pages (from-to)805-810
Number of pages6
JournalPhysica Status Solidi (A) Applied Research
Volume166
Issue number2
DOIs
Publication statusPublished - Apr 1998

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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