Imperial College London
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ProfessorBaptisteGault

Faculty of Engineering, Department of Materials

Professor of Atomic-Scale Characterization
 
 
 
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Contact

 

b.gault

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{da:2022:10.1038/s41467-022-30019-x,
author = {da, Silva AK and Souza, Filho IR and Lu, W and Zilnyk, KD and Hupalo, MF and Alves, LM and Ponge, D and Gault, B and Raabe, D},
doi = {10.1038/s41467-022-30019-x},
journal = {Nature Communications},
pages = {1--8},
title = {A sustainable ultra-high strength Fe18Mn3Ti maraging steel through controlled solute segregation and alpha-Mn nanoprecipitation},
url = {http://dx.doi.org/10.1038/s41467-022-30019-x},
volume = {13},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The enormous magnitude of 2 billion tons of alloys produced per year demands a change in design philosophy to make materials environmentally, economically, and socially more sustainable. This disqualifies the use of critical elements that are rare or have questionable origin. Amongst the major alloy strengthening mechanisms, a high-dispersion of second-phase precipitates with sizes in the nanometre range is particularly effective for achieving ultra-high strength. Here, we propose an alternative segregation-based strategy for sustainable steels, free of critical elements, which are rendered ultrastrong by second-phase nano-precipitation. We increase the Mn-content in a supersaturated, metastable Fe-Mn solid solution to trigger compositional fluctuations and nano-segregation in the bulk. These fluctuations act as precursors for the nucleation of an unexpected α-Mn phase, which impedes dislocation motion, thus enabling precipitation strengthening. Our steel outperforms most common commercial alloys, yet it is free of critical elements, making it a new platform for sustainable alloy design.
AU  - da,Silva AK
AU  - Souza,Filho IR
AU  - Lu,W
AU  - Zilnyk,KD
AU  - Hupalo,MF
AU  - Alves,LM
AU  - Ponge,D
AU  - Gault,B
AU  - Raabe,D
DO  - 10.1038/s41467-022-30019-x
EP  - 8
PY  - 2022///
SN  - 2041-1723
SP  - 1
TI  - A sustainable ultra-high strength Fe18Mn3Ti maraging steel through controlled solute segregation and alpha-Mn nanoprecipitation
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-022-30019-x
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000788852000036&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://www.nature.com/articles/s41467-022-30019-x
UR  - http://hdl.handle.net/10044/1/104218
VL  - 13
ER  -
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