The mechanism of twin thickening and the elastic strain state of TWIP steel nanotwins

Kwok, T. W.J.; McAuliffe, T. P.; Ackerman, A. K.; Savitzky, B. H.; Danaie, M.; Ophus, C.; Dye, D.

doi:10.1016/j.msea.2023.145005

The mechanism of twin thickening and the elastic strain state of TWIP steel nanotwins

Journal Article · Wed Apr 05 00:00:00 EDT 2023 · Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing

DOI:https://doi.org/10.1016/j.msea.2023.145005· OSTI ID:2234135

Kwok, T. W.J. ^[1]; ^[1]; Ackerman, A. K. ^[1]; ^[2]; Danaie, M. ^[3]; ^[2]; ^[1]

Imperial College, London (United Kingdom)
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Molecular Foundry
Electron Physical Science Imaging Centre (ePSIC), Oxford (United Kingdom). Diamond Light Source, Ltd.

A Twinning Induced Plasticity (TWIP) steel with a nominal composition of Fe-16.4Mn-0.9C-0.5Si-0.05Nb-0.05V was deformed to an engineering strain of 6%. The strain around the deformation twins were mapped using the 4D-STEM technique. Strain mapping showed a large average elastic strain of approximately 6% in the directions parallel and perpendicular to the twinning direction. However, the large average strain comprised of several hot spots of even larger strains of up to 12%. These hot spots could be attributed to a high density of sessile Frank dislocations on the twin boundary and correspond to shear stresses of 1–1.5 GPa. The strain and therefore stress fields are significantly larger than other materials known to twin and are speculated to be responsible for the early thickness saturation of TWIP steel nanotwins. The ability to keep twins extremely thin helps improve grain fragmentation, i.e. the dynamic Hall–Petch effect, and underpins the large elongations and strain hardening rates in TWIP steels.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 2234135

Journal Information:: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing, Journal Name: Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing Vol. 873; ISSN 0921-5093

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (32)

Formation of deformation twins in f.c.c. crystals Mahajan, S.; Chin, G. Y. Acta Metallurgica, Vol. 21, Issue 10 https://doi.org/10.1016/0001-6160(73)90085-0	journal	October 1973
Brittle fracture in austenitic steel Müllner, P.; Solenthaler, C.; Uggowitzer, P. J. Acta Metallurgica et Materialia, Vol. 42, Issue 7 https://doi.org/10.1016/0956-7151(94)90300-X	journal	July 1994
Second order twinning in austenitic steel Müllner, P.; Solenthaler, C.; Speidel, M. O. Acta Metallurgica et Materialia, Vol. 42, Issue 5 https://doi.org/10.1016/0956-7151(94)90382-4	journal	May 1994
Modelling of TWIP effect on work-hardening Bouaziz, O.; Guelton, N. Materials Science and Engineering: A, Vol. 319-321 https://doi.org/10.1016/S0921-5093(00)02019-0	journal	December 2001
On the ductile to brittle transition in austenitic steel Müllner, Peter Materials Science and Engineering: A, Vol. 234-236 https://doi.org/10.1016/S0921-5093(97)00196-2	journal	August 1997
Strength, strain-rate sensitivity and ductility of copper with nanoscale twins Dao, M.; Lu, L.; Shen, Y. F. Acta Materialia, Vol. 54, Issue 20 https://doi.org/10.1016/j.actamat.2006.06.062	journal	December 2006
Strain mapping in a deformation-twinned nanocrystalline Pd grain Rösner, H.; Boucharat, N.; Padmanabhan, K. A. Acta Materialia, Vol. 58, Issue 7 https://doi.org/10.1016/j.actamat.2009.12.047	journal	April 2010
Sensitivity of deformation twinning to grain size in titanium and magnesium Ghaderi, Alireza; Barnett, Matthew R. Acta Materialia, Vol. 59, Issue 20 https://doi.org/10.1016/j.actamat.2011.09.018	journal	December 2011
Revealing the strain-hardening behavior of twinning-induced plasticity steels: Theory, simulations, experiments Steinmetz, David R.; Jäpel, Tom; Wietbrock, Burkhard Acta Materialia, Vol. 61, Issue 2 https://doi.org/10.1016/j.actamat.2012.09.064	journal	January 2013
The effect of grain size on the twin initiation stress in a TWIP steel Rahman, K. M.; Vorontsov, V. A.; Dye, D. Acta Materialia, Vol. 89 https://doi.org/10.1016/j.actamat.2015.02.008	journal	May 2015
Assessment of residual stress fields at deformation twin tips and the surrounding environments Abdolvand, Hamidreza; Wilkinson, Angus J. Acta Materialia, Vol. 105 https://doi.org/10.1016/j.actamat.2015.11.036	journal	February 2016
Twinning-induced plasticity (TWIP) steels De Cooman, Bruno C.; Estrin, Yuri; Kim, Sung Kyu Acta Materialia, Vol. 142 https://doi.org/10.1016/j.actamat.2017.06.046	journal	January 2018
The influence of silicon additions on the deformation behavior of austenite-ferrite duplex medium manganese steels Sun, Binhan; Fazeli, Fateh; Scott, Colin Acta Materialia, Vol. 148 https://doi.org/10.1016/j.actamat.2018.02.005	journal	April 2018
Deformation mechanisms in a metastable beta titanium twinning induced plasticity alloy with high yield strength and high strain hardening rate Gao, Junheng; Huang, Yuhe; Guan, Dikai Acta Materialia, Vol. 152 https://doi.org/10.1016/j.actamat.2018.04.035	journal	June 2018
Microstructural evolution and strain-hardening in TWIP Ti alloys Zhao, Guo-Hua; Xu, Xin; Dye, David Acta Materialia, Vol. 183 https://doi.org/10.1016/j.actamat.2019.11.009	journal	January 2020
A phase field model for the growth and characteristic thickness of deformation-induced twins Grilli, Nicolò; Cocks, Alan C. F.; Tarleton, Edmund Journal of the Mechanics and Physics of Solids, Vol. 143 https://doi.org/10.1016/j.jmps.2020.104061	journal	October 2020
A physical model of the twinning-induced plasticity effect in a high manganese austenitic steel Allain, S.; Chateau, J. -P.; Bouaziz, O. Materials Science and Engineering: A, Vol. 387-389 https://doi.org/10.1016/j.msea.2004.01.060	journal	December 2004
The dynamic behaviour of a twinning induced plasticity steel Rahman, K. M.; Vorontsov, V. A.; Dye, D. Materials Science and Engineering: A, Vol. 589 https://doi.org/10.1016/j.msea.2013.09.081	journal	January 2014
Micromechanics of twinning in a TWIP steel Rahman, K. M.; Jones, N. G.; Dye, D. Materials Science and Engineering: A, Vol. 635 https://doi.org/10.1016/j.msea.2015.03.082	journal	May 2015
The relative contributions of TWIP and TRIP to strength in fine grained medium-Mn steels Kwok, T. W. J.; Gong, P.; Rose, R. Materials Science and Engineering: A, Vol. 855 https://doi.org/10.1016/j.msea.2022.143864	journal	October 2022
Effect of stacking-fault energy on deformation twin thickness in Cu–Al alloys Zhang, Y.; Tao, N. R.; Lu, K. Scripta Materialia, Vol. 60, Issue 4 https://doi.org/10.1016/j.scriptamat.2008.10.005	journal	February 2009
In situ nanobeam electron diffraction strain mapping of planar slip in stainless steel Pekin, Thomas C.; Gammer, Christoph; Ciston, Jim Scripta Materialia, Vol. 146 https://doi.org/10.1016/j.scriptamat.2017.11.005	journal	March 2018
Optimizing disk registration algorithms for nanobeam electron diffraction strain mapping Pekin, Thomas C.; Gammer, Christoph; Ciston, Jim Ultramicroscopy, Vol. 176 https://doi.org/10.1016/j.ultramic.2016.12.021	journal	May 2017
Four-Dimensional Scanning Transmission Electron Microscopy (4D-STEM): From Scanning Nanodiffraction to Ptychography and Beyond Ophus, Colin Microscopy and Microanalysis, Vol. 25, Issue 3 https://doi.org/10.1017/S1431927619000497	journal	May 2019
py4DSTEM: Open Source Software for 4D-STEM Data Analysis Savitzky, Benjamin H.; Hughes, Lauren; Bustillo, Karen C. Microscopy and Microanalysis, Vol. 25, Issue S2 https://doi.org/10.1017/S1431927619001351	journal	August 2019
Evolution and interaction of twins, dislocations and stacking faults in rolled α-brass during nanostructuring at sub-zero temperature Roy, Barna; Kumar, Nand Kishor; Nambissan, Padinharu Madathil Gopalakrishnan AIP Advances, Vol. 4, Issue 6 https://doi.org/10.1063/1.4881376	journal	June 2014
Nanoscale elastic strain mapping of polycrystalline materials Rottmann, Paul F.; Hemker, Kevin J. Materials Research Letters, Vol. 6, Issue 4 https://doi.org/10.1080/21663831.2018.1436609	journal	February 2018
Dislocation nucleation and defect structure during surface indentation Kelchner, Cynthia L.; Plimpton, S. J.; Hamilton, J. C. Physical Review B, Vol. 58, Issue 17 https://doi.org/10.1103/PhysRevB.58.11085	journal	November 1998
Strengthening Materials by Engineering Coherent Internal Boundaries at the Nanoscale Lu, K.; Lu, L.; Suresh, S. Science, Vol. 324, Issue 5925 https://doi.org/10.1126/science.1159610	journal	April 2009
Plastic strain due to twinning in austenitic TWIP steels Qin, B.; Bhadeshia, H. K. D. H. Materials Science and Technology, Vol. 24, Issue 8 https://doi.org/10.1179/174328408X263688	journal	August 2008
Efficient subpixel image registration algorithms Guizar-Sicairos, Manuel; Thurman, Samuel T.; Fienup, James R. Optics Letters, Vol. 33, Issue 2 https://doi.org/10.1364/OL.33.000156	journal	January 2008
Precipitation strengthening in high manganese austenitic TWIP steels Scott, Colin; Remy, Blandine; Collet, Jean-Louis International Journal of Materials Research, Vol. 102, Issue 5 https://doi.org/10.3139/146.110508	journal	May 2011

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