Influence of testing rate on Lüders band propagation in niobium microalloyed steel

Using thermal imaging camera during tensile testing of low carbon and Nb microalloyed steel influence of testing rate on start of plastic deformation was investigated. The results showed that the onset of plastic flow is significantly different in Nb steel. When testing Nb steel, above the yield poi...

Full description

Saved in:
Bibliographic Details
Published inMetalurgija Vol. 55; no. 2; pp. 157 - 160
Main Authors S. Rešković, I. Jandrlić, F. Vodopivec
Format Journal Article
LanguageEnglish
Published Croatian Metallurgical Society 01.01.2016
Subjects
microalloyed steel
plastic deformation
speed of Lüders bands
thermography
Online AccessGet full text

Cover

More Information
Summary:Using thermal imaging camera during tensile testing of low carbon and Nb microalloyed steel influence of testing rate on start of plastic deformation was investigated. The results showed that the onset of plastic flow is significantly different in Nb steel. When testing Nb steel, above the yield point (Reh), Lüders bands formed and no change of temperature was recorded by increase of sample stretching force. Strain rate affects the propagation velocity of Lüders bands through the deformation zone.
ISSN:0543-5846
1334-2576