Influence of Plastic Strain on Heat Capacity of L485ME Pipe Steel Grade

Author:

Lipski Adam1ORCID,Witek Maciej2ORCID,Abdelghani Mechri3ORCID,Swacha Piotr1ORCID

Affiliation:

1. Laboratory for Research on Materials and Structures, Faculty of Mechanical Engineering, Bydgoszcz University of Science and Technology, Al. Prof. S. Kaliskiego 7, 85-796 Bydgoszcz, Poland

2. Department of Heating and Gas Systems, Warsaw University of Technology, Nowowiejska Str. 20, 00-653 Warszawa, Poland

3. Composite Structures and Innovative Materials Laboratory, University of Sciences and Technology USTOMB, BP 1505, Oran 31000, Algeria

Abstract

The aim of this work is an experimental evaluation of a specific heat capacity as a function of plastic strain for thermo-mechanically rolled pipe material, with application of an infrared thermographic camera. The tensile load tests of samples prepared of L485ME (X70M) steel grade were performed with the use of a strength machine. Based on other known material thermophysical properties, the determination of heat source parameters was conducted with the use of an infrared thermography and with an optimization task solution. A linear regression equation describing the specific heat capacity as a function of plastic percentage elongation for L485ME steel grade was determined. The experimental results of the present study showed a linear increase in the specific heat capacity in the range of the analyzed tensile deformation up to 16%. The presented methodology is suitable for assessment of the material specific heat capacity as a function of strain up to the occurrence of the sample narrowing in a direction perpendicular to the tensile force.

Funder

Warsaw University of Technology

Publisher

MDPI AG

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