Imperial College London
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ProfessorDavidDye

Faculty of Engineering, Department of Materials

Professor of Metallurgy
 
 
 
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Contact

 

+44 (0)20 7594 6811david.dye

 
 
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Location

 

1.09GoldsmithSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kwok:2022:10.1016/j.msea.2022.143864,
author = {Kwok, TWJ and Gong, P and Rose, R and Dye, D},
doi = {10.1016/j.msea.2022.143864},
journal = {Materials Science and Engineering: A},
pages = {1--13},
title = {The relative contributions of TWIP and TRIP to strength in fine grained medium-Mn steels},
url = {http://dx.doi.org/10.1016/j.msea.2022.143864},
volume = {855},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A medium Mn steel of composition Fe-4.8Mn-2.8Al-1.5Si-0.51C (wt.%) was processed to obtain two different microstructures representing two different approaches in the hot rolling mill, resulting in equiaxed vs. mixed equiaxed and lamellar microstructures. Both were found to exhibit a simultaneous Twinning Induced Plasticity and Transformation Induced Plasticity (TWIP  TRIP) mechanism where deformation twins and -martensite formed independently of twinning with strain. Interrupted tensile tests were conducted in order to investigate the differences in deformation structures between the two microstructures. A constitutive model was used to find that, surprisingly, twinning contributed relatively little to the strength of the alloy, chiefly due to the fine initial slip lengths that then gave rise to relatively little opportunity for work hardening by grain subdivision. Nevertheless, with lower high-cost alloying additions than equivalent Dual Phase steels (2–3 wt% Mn) and greater ductility, medium-Mn TWIP  TRIP steels still represent an attractive area for future development.
AU  - Kwok,TWJ
AU  - Gong,P
AU  - Rose,R
AU  - Dye,D
DO  - 10.1016/j.msea.2022.143864
EP  - 13
PY  - 2022///
SN  - 0921-5093
SP  - 1
TI  - The relative contributions of TWIP and TRIP to strength in fine grained medium-Mn steels
T2  - Materials Science and Engineering: A
UR  - http://dx.doi.org/10.1016/j.msea.2022.143864
UR  - https://www.sciencedirect.com/science/article/pii/S0921509322012448?via%3Dihub
UR  - http://hdl.handle.net/10044/1/99912
VL  - 855
ER  -
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