Characterization of a low-alloy steel component produced with wire arc additive manufacturing process using metal-cored wire

Uğur Gürol; Savaş Dilibal; Batuhan Turgut; Mustafa Koçak

doi:10.1515/mt-2021-2155

Article

Characterization of a low-alloy steel component produced with wire arc additive manufacturing process using metal-cored wire

Uğur Gürol , Savaş Dilibal , Batuhan Turgut
Batuhan Turgut, born in 1998, graduated with a bachelor’s degree in Mechanical Engineering from Istanbul Gedik University as the top of the department. He started his MSc at Gebze Technical University on wire arc additive manufacturing. He is a candidate IIW Welding Engineer. He is currently working as an R&D Engineer in Gedik Welding Inc. His main research areas are robotic welding applications and wire arc additive manufacturing.
and Mustafa Koçak

Published/Copyright: June 8, 2022

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From the journal Materials Testing Volume 64 Issue 6

Abstract

In this study, a low-alloy steel component was manufactured using specially produced E70C-6M class of metal-cored welding wire according to AWS A5.18 standard for the WAAM process. The manufactured low-alloy steel component was first subjected to radiographic examination to detect any weld defect. Uniaxial tensile tests were conducted for the bottom, middle and upper regions. The micro-hardness tests were performed parallel to the deposition direction. The results show that microstructures varied from base metal to the face region of the WAAM component, including the bottom, middle and top sections. The bottom region showed lamellar structures; the middle and upper region presented equiaxed ferrite structure with a small amount of grain boundary pearlites and the face region displayed a mix of equiaxed and lamellar structures of ferrites. The yield and ultimate tensile strengths of the top, middle, and bottom regions exhibited similar results varying between 370 MPa and 490 MPa, respectively. In contrast, the top region showed an elongation value about 15% higher than other regions. Moreover, the yield and ultimate tensile strength for WAAM-produced component were found to be 14% and 24% lower than the multiple-pass all-weld metal of E70C-6M class of metal-cored wire.

Keywords: low-alloy steel; mechanical properties; metal-cored wire; microstructure; wire arc additive manufacturing

Corresponding author: Uğur Gürol, Metallurgical and Materials Engineering Department, İstanbul Gedik University, İstanbul, Turkey, E-mail: ugur.gurol@yahoo.com

About the author

Batuhan Turgut

Batuhan Turgut, born in 1998, graduated with a bachelor’s degree in Mechanical Engineering from Istanbul Gedik University as the top of the department. He started his MSc at Gebze Technical University on wire arc additive manufacturing. He is a candidate IIW Welding Engineer. He is currently working as an R&D Engineer in Gedik Welding Inc. His main research areas are robotic welding applications and wire arc additive manufacturing.

Acknowledgments

Authors wish to acknowledge the valuable contributions of Ms. Nurten Güleçyüz for assisting the robotic welding and the WAAM operations.

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Published Online: 2022-06-08

Published in Print: 2022-06-27

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Articles in the same Issue

https://doi.org/10.1515/mt-2021-2155

Keywords for this article

low-alloy steel; mechanical properties; metal-cored wire; microstructure; wire arc additive manufacturing