Mechanical properties of wire arc additive manufactured carbon steel cylindrical component made by gas metal arc welding process

Bellamkonda Prasanna Nagasai,Sudersanan Malarvizhi,Visvalingam Balasubramanian

doi:10.1515/jmbm-2021-0019

Bellamkonda Prasanna Nagasai, Sudersanan Malarvizhi + Show 1 more

Open Access

https://doi.org/10.1515/jmbm-2021-0019

Copy DOI

Abstract

Abstract Wire arc additive manufacturing (WAAM), a welding-based additive manufacturing (AM) method, is a hot topic of research since it allows for the cost-effective fabrication of large-scale metal components at relatively high deposition rates. In the present study, the cylindrical component of low carbon steel (ER70S-6) was built by WAAM technique, using a GMAW torch that was translated by an automated three-axis motion system using a rotation table. The mechanical properties of the component were evaluated by extracting tensile, impact toughness and hardness specimens from the two regions of the building up (vertical) direction. It is found that the tensile properties of the built material exhibited anisotropic characteristics. The yield strength and ultimate tensile strength varied from 333 to 350 MPa and from 429 to 446 MPa, respectively, (less than 5 % variation).

Highlights

Additive manufacturing (AM) has been developed in recent decades as a new technology for manufacturing parts, par-Wire arc additive manufacturing (WAAM) is considered to be the most advantageous metallic AM technology for producing large-scale components
Wire arc additive manufacturing (WAAM), a welding-based additive manufacturing (AM) method, is a hot topic of research since it allows for the cost-effective fabrication of large-scale metal components at relatively high deposition rates
The cylindrical component of low carbon steel (ER70S-6) was built by WAAM technique, using a Gas Metal Arc Welding (GMAW) torch that was translated by an automated three-axis motion system using a rotation table

Summary

Introduction

WAAM is considered to be the most advantageous metallic AM technology for producing large-scale components. The advantage of WAAM is its high deposition rate, low cost investment and production in compared with other AM technologies [5, 6]. WAAM is a more cost-effective and appropriate option to the industry’s for large-scale component production. PAW-based AM has the highest energy density among WAAM processes, which enables fast welding speeds and the high quality of weld beads with minimum distortion. The deposition rate of GMAWbased AM is almost two times higher compared to the deposition rate of GTAW- and PAW-based AM [9]. The GMAW-based AM method is well suited to manufacture large-scale components

Objectives

Methods

Results

Discussion

Conclusion