Effects of wire arc directed energy deposition process parameters on uniaxial tensile behavior of multi-layered ER120S-G steel builds

Author

• Bryant Applegarth, Mississippi State UniversityFollow

Advisor

Rhee, Hongjoo

Committee Member

Mujahid, Shiraz

Committee Member

Van Iderstine, Dawn

Committee Member

Kim, Han-Gyu

Date of Degree

5-15-2026

Original embargo terms

Embargo 6 months

Document Type

Graduate Thesis - Open Access

Major

Mechanical Engineering

Degree Name

Master of Science (M.S.)

College

James Worth Bagley College of Engineering

Department

Michael W. Hall School of Mechanical Engineering

Abstract

Wire arc directed energy deposition (WA-DED) is an innovative additive manufacturing (AM) technique capable of producing large metal components at high deposition rates. Increasing research efforts have focused on identifying materials that can fully leverage these capabilities. Among these materials, high strength low alloy (HSLA) steels have emerged as promising candidates due to their favorable strength-to-weight ratios and good weldability in conventional manufacturing methods. Therefore, this study aims to expand the current understanding of HSLA steels in WA-DED by investigating the influence of WA-DED process parameters on uniaxial tensile behavior of multi-layered as-processed builds fabricated using ER120S-G steel. The tensile specimens were analyzed using stress-strain analysis, digital image correlation (DIC), and microstructure characterization to evaluate uniaxial tensile behavior. It was found that varying process parameters can influence slight changes in tensile properties, while variations within builds are primarily driven by the complex thermal history inherent to WA-DED processes.

Sponsorship (Optional)

This material is based upon work supported by the Engineering Research and Development Center – Information Technology Laboratory (ERDC-ITL) under Contract No. W912HZ-23-C0012. Any opinions, findings, conclusions, or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the ERDC-ITL

Recommended Citation

Applegarth, Bryant, "Effects of wire arc directed energy deposition process parameters on uniaxial tensile behavior of multi-layered ER120S-G steel builds" (2026). Theses and Dissertations. 6863.
https://scholarsjunction.msstate.edu/td/6863