The Effect of Resistance Spot Welding Parameters on Microstructure and Strength of DP800 Steel Joints Using Response Surface Methodology

Chakkravarthi Rajarajan; Tushar Sonar; Paramasivam Sivaraj; Selvaraj Raja; Nallusamy Mathiazhagan

doi:10.2478/adms-2022-0013

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The Effect of Resistance Spot Welding Parameters on Microstructure and Strength of DP800 Steel Joints Using Response Surface Methodology

Advances in Materials Science

Volume 22 (2022): Issue 3 (September 2022)

By: Chakkravarthi Rajarajan, Tushar Sonar, Paramasivam Sivaraj, Selvaraj Raja and Nallusamy Mathiazhagan

Open Access

|Oct 2022

Abstract

The main objective of this paper is to analyze the direct and interaction effect of resistance spot welding (RSW) parameters on microstructure and strength of DP800 steel joints using response surface methodology (RSM). The DP800 steel sheets were spot welded in straight lap and cross lap joint configuration using RSW. The relationship between the RSW parameters, tensile shear fracture load (TSFL) and nugget zone hardness (NZH) was established employing statistical regression analysis and validated using Analysis of Variance (ANOVA). The DP800 steel joints made using welding current of 5.0 kA, electrode pressure of 4.0 MPa, and welding time of 1.50 s displayed maximum STRAIGHT-TSFL of 21.7 kN, CROSS-TSFL of 17.65 kN, and NZH of 589 HV_0.5 respectively.

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Articles in this issue

DOI: https://doi.org/10.2478/adms-2022-0013 | Journal eISSN: 2083-4799 | Journal ISSN: 1730-2439

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Language: English

Page range: 53 - 78

Published on: Oct 8, 2022

Published by: Gdansk University of Technology

In partnership with: Paradigm Publishing Services

Publication frequency: 4 issues per year

Keywords:

Resistance spot welding,

DP800 steel,

tensile shear fracture load,

response surface methodology

Related subjects:

Materials sciences,

Functional and smart materials

© 2022 Chakkravarthi Rajarajan, Tushar Sonar, Paramasivam Sivaraj, Selvaraj Raja, Nallusamy Mathiazhagan, published by Gdansk University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Volume 22 (2022): Issue 3 (September 2022)