Next Article in Journal
The Effect of Cooling Rate on Microstructure and Mechanical Properties of the Zr-4Hf-3Nb (wt%) Alloy
Previous Article in Journal
Quantified Approach for Evaluation of Geometry Visibility of Optical-Based Process Monitoring System for Laser Powder Bed Fusion
 
 
Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
Journals
Metals
Volume 13
Issue 1
10.3390/met13010014
metals-logo
Submit to this Journal Review for this Journal Propose a Special Issue
► Article Menu

Article Menu

share Share announcement Help format_quote Cite question_answer Discuss in SciProfiles
first_page
settings
Order Article Reprints
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:
Background:
Article

Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel

by
Sachin Sirohi
1,
Shailesh M. Pandey
2,
Aleksandra Świerczyńska
3,
Grzegorz Rogalski
3,
Naveen Kumar
4,
Michał Landowski
3,
Dariusz Fydrych
3,* and
Chandan Pandey
5,*
1
Department of Mechanical Engineering, SRM Institute of Science and Technology, Delhi NCR Campus, Modinagar 201204, India
2
Department of Mechanical Engineering, National Institute of Technology, Patna 800005, India
3
Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, Gabriela Narutowicza Street 11/12, 80-233 Gdańsk, Poland
4
Department of Mechanical Engineering, Indian Institute of Technology Delhi, Delhi 110016, India
5
Department of Mechanical Engineering, Indian Institute of Technology, Jodhpur N.H. 62, Nagaur Road, Karwar, Jodhpur 342037, India
*
Authors to whom correspondence should be addressed.
Metals 2023, 13(1), 14; https://doi.org/10.3390/met13010014
Submission received: 13 November 2022 / Revised: 10 December 2022 / Accepted: 17 December 2022 / Published: 21 December 2022
(This article belongs to the Topic Welding and Joining of Materials in Off-Shore and Energy Industry)
Browse Figures
Versions Notes

Abstract

A dissimilar welded joint of Inconel 718 and 304L austenitic stainless steel was prepared using a combined procedure with the gas tungsten arc welding and shielded metal arc welding processes by employing the Ni-based fillers: ERNiCr-3 and ENiCrFe-3. The welded joints were investigated for metallographic testing and mechanical properties, and a relationship was established between the microstructure and the resultant mechanical properties. Microstructural observation revealed the formation of the unmixed zone on the 304L SS side. The weld metal showed that the fully austenitic microstructure consisted of the Nb- and Ti-rich carbide phases along the inter-dendritic spaces. The tensile test results at room temperature showed the failure from the weld metal which might be due to alloying element segregation along the inter-dendritic spaces. However, a tensile test at 600 °C showed the failure from the 304L SS base metal with a tensile strength and % elongation value of 377 MPa and 24%, respectively. The hardness plot showed the average hardness value of the weld metal of 236 ± 5 HV, which was higher than the 304L SS BM (204 ± 4 HV) but lower than the IN718 BM (243 ± 5 HV). The impact toughness of the weld metal was 109 J, which was significantly lower than the base metals. The poor impact strength of the weld metal might be due to the evolution of the NbC phase along inter-dendritic spaces.
Keywords: Inconel 718; 304L austenitic stainless steel; GTAW; SMAW; dissimilar welded joint; mechanical testing Inconel 718; 304L austenitic stainless steel; GTAW; SMAW; dissimilar welded joint; mechanical testing

Share and Cite

MDPI and ACS Style

Sirohi, S.; Pandey, S.M.; Świerczyńska, A.; Rogalski, G.; Kumar, N.; Landowski, M.; Fydrych, D.; Pandey, C. Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel. Metals 2023, 13, 14. https://doi.org/10.3390/met13010014

AMA Style

Sirohi S, Pandey SM, Świerczyńska A, Rogalski G, Kumar N, Landowski M, Fydrych D, Pandey C. Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel. Metals. 2023; 13(1):14. https://doi.org/10.3390/met13010014

Chicago/Turabian Style

Sirohi, Sachin, Shailesh M. Pandey, Aleksandra Świerczyńska, Grzegorz Rogalski, Naveen Kumar, Michał Landowski, Dariusz Fydrych, and Chandan Pandey. 2023. "Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel" Metals 13, no. 1: 14. https://doi.org/10.3390/met13010014

APA Style

Sirohi, S., Pandey, S. M., Świerczyńska, A., Rogalski, G., Kumar, N., Landowski, M., Fydrych, D., & Pandey, C. (2023). Microstructure and Mechanical Properties of Combined GTAW and SMAW Dissimilar Welded Joints between Inconel 718 and 304L Austenitic Stainless Steel. Metals, 13(1), 14. https://doi.org/10.3390/met13010014

Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details here.

Article Metrics

Back to TopTop