Welding investigation of a wrought FeMnAl steel for armor application

Dai, Tao; Feng, Zhili; Kyle, Douglas; Zhang, Wei; Parish, Chad; Sebeck, Katherine; Tzelepis, Demetrios; Vieau, Katherine; Rogers, Matt

doi:10.1007/s40194-025-02078-3

Welding investigation of a wrought FeMnAl steel for armor application

Journal Article · Tue Jun 03 00:00:00 EDT 2025 · Welding in the World

DOI:https://doi.org/10.1007/s40194-025-02078-3· OSTI ID:2573128

^[1]; ^[1]; Kyle, Douglas ^[1]; Zhang, Wei ^[1]; ^[1]; Sebeck, Katherine ^[2]; Tzelepis, Demetrios ^[2]; Vieau, Katherine ^[2]; Rogers, Matt ^[2]

Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
US Army Combat Capabilities Development Command Ground Vehicle Systems Center, Warren, MI (United States)

A new wrought FeMnAl steel contains high Mn content and high Al content. This steel has high strength. When it is compared to conventional steels with the similar strength, its density is lower. FeMnAl steels can be used in armor vehicle manufacturing, in which welding is a common practice to join the steel plates together. The welding of FeMnAl steels has not been sufficiently studied before. Here, this work studied the weldability and weld microstructure of an FeMnAl steel and provided useful data for the welding practice of FeMnAl steels. The influences of weld filler metals and shielding gases were studied, using single-pass bead-on-plate gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW) two processes. The optimal filler metals and shielding gases have been determined to achieve the better weldability. Autogenous GTAW and electron beam welding were also conducted. Cracks were found in the HAZ in the GMAW welds and electron beam welds. Fewer or no cracks were found in the HAZ of GTAW welds. SEM, SEM/EDX, TEM, TEM/EDX, and EBSD were used to analyze the grain boundaries in the HAZ and the cracks. The grain boundaries of FeMnAl base metal are mostly high angle grain boundaries (HAGBs), which attract impurity and solute atoms and cause intergranular cracking. The proposed cracking mechanisms are liquation cracking and ductility-dip cracking. It was found that GTAW provides much better weldability for the FeMnAl steel than GMAW and EBW.

View Accepted Manuscript (DOE)

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 2573128

Journal Information:: Welding in the World, Journal Name: Welding in the World; ISSN 1878-6669; ISSN 0043-2288

Publisher:: Springer NatureCopyright Statement

Country of Publication:: United States

Language:: English

References (30)

Welding Metallurgy and Weldability of Nickel-Base Alloys DuPont, John N.; Lippold, John C.; Kiser, Samuel D. https://doi.org/10.1002/9780470500262	book	September 2009
Microstructures and Mechanical Properties of High-Strength Fe-Mn-Al-C Light-Weight TRIPLEX Steels Frommeyer, Georg; Brüx, Udo steel research international, Vol. 77, Issue 9-10 https://doi.org/10.1002/srin.200606440	journal	September 2006
Properties of electron-beam-welded and laser-welded austenitic Fe-28Mn-5Al-1C alloy Ku, Jim Son; Ho, New Jin; Tjong, Sie Chin Journal of Materials Science, Vol. 28, Issue 10 https://doi.org/10.1007/BF00356223	journal	January 1993
Effect of carbon on the weldability of Fe-Mn-Al alloys Chou, Chang-Pin; Lee, Chien-Hsun Journal of Materials Science, Vol. 25, Issue 2 https://doi.org/10.1007/BF00585471	journal	February 1990
Fe?Mn?Al precipitation-hardening austenitic alloys Kayak, G. L. Metal Science and Heat Treatment, Vol. 11, Issue 2 https://doi.org/10.1007/BF00652271	journal	February 1969
Galvanic corrosion behaviour of Fe-Mn-Al alloys in sea water Gau, Y. J.; Wu, J. K. Journal of Materials Science Letters, Vol. 11, Issue 2 https://doi.org/10.1007/BF00724618	journal	January 1992
Influence of heat treatment on the structure and properties of 9G28Yu9MVB steel Bozhko, S. A. Metal Science and Heat Treatment, Vol. 30, Issue 3 https://doi.org/10.1007/BF00775730	journal	March 1988
A general perspective of Fe–Mn–Al–C steels Zambrano, O. A. Journal of Materials Science, Vol. 53, Issue 20 https://doi.org/10.1007/s10853-018-2551-6	journal	June 2018
Origin of Extended Tensile Ductility of a Fe-28Mn-10Al-1C Steel Yoo, J. D.; Hwang, S. W.; Park, K. -T. Metallurgical and Materials Transactions A, Vol. 40, Issue 7 https://doi.org/10.1007/s11661-009-9862-9	journal	May 2009
Alloy Design, Combinatorial Synthesis, and Microstructure–Property Relations for Low-Density Fe-Mn-Al-C Austenitic Steels Raabe, D.; Springer, H.; Gutierrez-Urrutia, I. JOM, Vol. 66, Issue 9 https://doi.org/10.1007/s11837-014-1032-x	journal	June 2014
High Manganese and Aluminum Steels for the Military and Transportation Industry Bartlett, Laura; Van Aken, David JOM, Vol. 66, Issue 9 https://doi.org/10.1007/s11837-014-1068-y	journal	August 2014
Heat-Affected Zone Characteristics with Post-Weld Heat Treatments in Austenitic Fe–Mn–Al–C Lightweight Steels Jeong, Seonghoon; Park, Gitae; Kim, Bongyoon Metals and Materials International, Vol. 28, Issue 10 https://doi.org/10.1007/s12540-021-01133-0	journal	March 2022
Weld metal characteristics of duplex Fe-30wt.%Mn-10wt.%Al-xC alloys Chou, Chang-Pin; Lee, Chien-Hsun Materials Science and Engineering: A, Vol. 118 https://doi.org/10.1016/0921-5093(89)90066-X	journal	October 1989
Heat treatment and thermal stability of FeMnAlC alloys Kalashnikov, I. S.; Acselrad, O.; Shalkevich, A. Journal of Materials Processing Technology, Vol. 136, Issue 1-3 https://doi.org/10.1016/S0924-0136(02)00937-8	journal	May 2003
Rapid alloy prototyping: Compositional and thermo-mechanical high throughput bulk combinatorial design of structural materials based on the example of 30Mn–1.2C–xAl triplex steels Springer, H.; Raabe, D. Acta Materialia, Vol. 60, Issue 12 https://doi.org/10.1016/j.actamat.2012.05.017	journal	July 2012
Strain hardening by dynamic slip band refinement in a high-Mn lightweight steel Welsch, E.; Ponge, D.; Hafez Haghighat, S. M. Acta Materialia, Vol. 116 https://doi.org/10.1016/j.actamat.2016.06.037	journal	September 2016
Strengthening and strain hardening mechanisms in a precipitation-hardened high-Mn lightweight steel Yao, M. J.; Welsch, E.; Ponge, D. Acta Materialia, Vol. 140 https://doi.org/10.1016/j.actamat.2017.08.049	journal	November 2017
The effect of κ-carbides on high cycle fatigue behavior of a Fe-Mn-Al-C lightweight steel Gomez, A.; Banis, A.; Avella, M. International Journal of Fatigue, Vol. 184 https://doi.org/10.1016/j.ijfatigue.2024.108306	journal	July 2024
Precipitation and dissolution behavior of κ-carbide during continuous heating in Fe-9.3Mn-5.6Al-0.16C lightweight steel Lee, Sukjin; Jeong, Junyeong; Lee, Young-Kook Journal of Alloys and Compounds, Vol. 648 https://doi.org/10.1016/j.jallcom.2015.06.048	journal	November 2015
Effect of aging treatment on microstructure and intrinsic mechanical behavior of Fe–31.4Mn–11.4Al–0.89C lightweight steel Lee, Keunho; Park, Seong-Jun; Lee, Jaeeun Journal of Alloys and Compounds, Vol. 656 https://doi.org/10.1016/j.jallcom.2015.10.016	journal	January 2016
Microband-induced plasticity in a high Mn–Al–C light steel Yoo, Je Doo; Park, Kyung-Tae Materials Science and Engineering: A, Vol. 496, Issue 1-2 https://doi.org/10.1016/j.msea.2008.05.042	journal	November 2008
Influence of Al content on the strain-hardening behavior of aged low density Fe–Mn–Al–C steels with high Al content Wu, Z. Q.; Ding, H.; An, X. H. Materials Science and Engineering: A, Vol. 639 https://doi.org/10.1016/j.msea.2015.05.002	journal	July 2015
Effect of aging on the microstructure and deformation behavior of austenite base lightweight Fe–28Mn–9Al–0.8C steel Choi, Kayoung; Seo, Chang-Hyo; Lee, Hakcheol Scripta Materialia, Vol. 63, Issue 10 https://doi.org/10.1016/j.scriptamat.2010.07.036	journal	November 2010
Influence of Al content and precipitation state on the mechanical behavior of austenitic high-Mn low-density steels Gutierrez-Urrutia, I.; Raabe, D. Scripta Materialia, Vol. 68, Issue 6 https://doi.org/10.1016/j.scriptamat.2012.08.038	journal	March 2013
Physical and mechanical properties of iron-aluminium-(Mn, Si) lightweight steels Frommeyer, G.; Drewes, E. J.; Engl, B. Revue de Métallurgie, Vol. 97, Issue 10 https://doi.org/10.1051/metal:2000110	journal	October 2000
Heat affected zone liquation cracking evaluation on FeMnAl alloys Giorjao, Rafael; Riffel, Kaue C.; Brizes, Eric Science and Technology of Advanced Materials, Vol. 25, Issue 1 https://doi.org/10.1080/14686996.2024.2342232	journal	August 2024
High strength and ductile low density austenitic FeMnAlC steels: Simplex and alloys strengthened by nanoscale ordered carbides Gutierrez-Urrutia, I.; Raabe, D. Materials Science and Technology, Vol. 30, Issue 9 https://doi.org/10.1179/1743284714Y.0000000515	journal	February 2014
Solidification microstructure and creep rupture behaviour of electron beam welded austenitic Fe-28M-6Al-1C alloy Tjong, S. C.; Zhu, S. M.; Ho, N. J. Materials Science and Technology, Vol. 13, Issue 3 https://doi.org/10.1179/mst.1997.13.3.251	journal	March 1997
Phase equilibria in Fe-Mn-Al-C alloys. Ishida, Kiyohito; Ohtani, Hiroshi; Satoh, Naoya ISIJ International, Vol. 30, Issue 8 https://doi.org/10.2355/isijinternational.30.680	journal	January 1990
High-strength Fe–20Mn–Al–C-based Alloys with Low Density Sutou, Yuji; Kamiya, Naohide; Umino, Reiko ISIJ International, Vol. 50, Issue 6 https://doi.org/10.2355/isijinternational.50.893	journal	January 2010

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Welding investigation of a wrought FeMnAl steel for armor application

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