IMPACT OF STRAIN RATE ON MICROALLOYED STEEL SHEET BREAKING

Authors

  • Mária Mihaliková Technical University of Košice Faculty of Metallurgy
  • Miroslav Német Technical University of Košice Faculty of Metallurgy
  • Marek Vojtko Technical University of Košice Faculty of Metallurgy

DOI:

https://doi.org/10.14311/AP.2014.54.0281

Abstract

Strain rate is a significant external factor and its influence on material behavior in forming process is a function of its internal structure. The contribution is analysis of the impact of loading rate from 1.6 x 10-4 ms-1 to 24 ms-1 to changes in the fracture of steel sheet used for bodywork components in cars. Experiments were performed on samples taken from HC420LA grade strips produced by cold rolling and hot dip galvanizing. Material strength properties were compared based on measured values, and changes to fracture surface character were observed.

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Author Biography

Mária Mihaliková, Technical University of Košice Faculty of Metallurgy

Department of material science

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Published

2014-08-31

Issue

Section

Articles