Temperature Changes Induced by the Portevin-Le Châtelier (PLC) Effect during Tensile Test Based on the Example of CuZn37 Brass

Abstract:

This paper presents results of research on PLC effect in CuZn37 brass. A thermographic camera was applied in the tests for determining surface temperature distributions of the tested specimens during tension. Spatial-temporal diagrams were prepared on the basis of those distributions. The tests were performed at two strain rates. No significant difference in the tension curve course depending on the above rate was found. Significant difference was observedas regards the course of specimen temperature changes. Increased frequency of the permanent strain wave propagating along the specimen centerline was observed together with the increase of the wave propagation speed for the higher strain rate. Simultaneous initiation of two propagating waves in opposite directions was observed in case of the higher strain rate.

• Periodical: Solid State Phenomena (Volume 224)
• Pages: 238-243
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.224.238
• Online since: November 2014
• Authors: Adam Lipski*, Zbigniew Lis
• Keywords: Brass, IR Thermography, PLC Effect, Portevin-Le Châtelier Effect, Tension Test

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