Effect of heat treatment on the properties of plasma arc welded TRIP800 steel

Büşra Karaoğlu; Ramazan Kaçar

doi:10.1515/mt-2022-0110

Article

Effect of heat treatment on the properties of plasma arc welded TRIP800 steel

Büşra Karaoğlu
Büşra Karaoğlu was a MSc student in the Institute of Graduate Studies, Manufacturing Engineering Department of Karabük University, Karabük, Turkey.
and Ramazan Kaçar

Published/Copyright: November 4, 2022

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From the journal Materials Testing Volume 64 Issue 11

Abstract

In this study, the effect of heat treatment applied at various temperatures on the properties of plasma arc welded TRIP800 steel has been examined extensively. For this purpose, the low temperature heat treatment was carried out at −50, −20, and 0 °C for 2 h on a set of welded samples. Moreover, the heat treatment process was also applied for 2 h at various temperatures (i.e., 100, 200, 300, 400, 500, 600, 800, and 1000 °C) for another group of plasma arc welded TRIP800 steels. In addition, the properties of a set of samples without any heat treatment were determined in as-welded condition for a comparison. The mechanical properties of all samples were determined, and microstructures of samples were evaluated. As a result, the low temperature heat treatment applied at the specified temperatures did not have a significant effect on the ultimate tensile strength, and ductility of the joint but affected the yield strength positively. Besides, the ultimate tensile strength of heat treated samples also diminished with increasing processing temperature. It was found that the yield strength of the heat treatment applied samples showed an increase up to 500 °C, while the samples tested at 500 and 600 °C showed pronounced yielding behavior.

Keywords: heat treatment; mechanical properties; microstructure; plasma arc welding; TRIP steels

Corresponding author: Ramazan Kaçar, Karabük Üniversitesi, Karabük, Türkiye, E-mail: rkacar@karabuk.edu.tr

Funding source: Scientific Research Projects Coordination Unit of Karabük University

Award Identifier / Grant number: FYL-2019-2021

About the author

Büşra Karaoğlu

Büşra Karaoğlu was a MSc student in the Institute of Graduate Studies, Manufacturing Engineering Department of Karabük University, Karabük, Turkey.

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This work was supported by the Scientific Research Projects Coordination Unit of Karabük University under the project code number FYL-2019-2021. Authors are grateful for their financial support.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2022-11-04

Published in Print: 2022-11-25

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Articles in the same Issue

https://doi.org/10.1515/mt-2022-0110

Keywords for this article

heat treatment; mechanical properties; microstructure; plasma arc welding; TRIP steels