Materials information and mechanical response of TRIP/TWIP Ti alloys
Abstract Materials innovation calls for an integrated framework combining physics-based modelling and data-driven informatics. A dislocation-based constitutive model accounting for both transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP) was built to interpret the mechani...
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Series: | npj Computational Materials |
Online Access: | https://doi.org/10.1038/s41524-021-00560-2 |
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doaj-c45bd9bb057b4b3086dcb50cf91b69762021-06-20T11:20:24ZengNature Publishing Groupnpj Computational Materials2057-39602021-06-01711910.1038/s41524-021-00560-2Materials information and mechanical response of TRIP/TWIP Ti alloysGuohua Zhao0Xiaoqing Li1Nik Petrinic2Department of Engineering Science, University of OxfordDepartment of Materials Science and Engineering, KTH Royal Institute of TechnologyDepartment of Engineering Science, University of OxfordAbstract Materials innovation calls for an integrated framework combining physics-based modelling and data-driven informatics. A dislocation-based constitutive model accounting for both transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP) was built to interpret the mechanical characteristics of metastable titanium alloys. Particular attention was placed on quantitatively understanding the composition-sensitive phase stability and its influence on the underlying deformation mechanism. For this purpose, a pseudoelastic force balance incorporating thermodynamics and micromechanics was applied to calculate the energy landscapes of β → α ″ martensitic transformation, {332}〈113〉 twinning and dislocation slip. Extensive material data were probed, computed and fed to the model. Our results revealed that TRIP and TWIP may operate simultaneously because of the presence of a noticeably overlapped energy domain, and confirmed {332}〈113〉 twinning is an energetically favourable deformation mechanism. The model validation further unveiled that the activation of β → α ″ transition remarkably enhances the strain-hardening and plasticity, even though the dynamically formed α ″ volume fraction is much less than that of deformation twinning. Our work suggests that the synchronised physical metallurgy and data-driven strategy allows to identify the compositional scenarios for developing high-performance engineering alloys.https://doi.org/10.1038/s41524-021-00560-2 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Guohua Zhao Xiaoqing Li Nik Petrinic |
spellingShingle |
Guohua Zhao Xiaoqing Li Nik Petrinic Materials information and mechanical response of TRIP/TWIP Ti alloys npj Computational Materials |
author_facet |
Guohua Zhao Xiaoqing Li Nik Petrinic |
author_sort |
Guohua Zhao |
title |
Materials information and mechanical response of TRIP/TWIP Ti alloys |
title_short |
Materials information and mechanical response of TRIP/TWIP Ti alloys |
title_full |
Materials information and mechanical response of TRIP/TWIP Ti alloys |
title_fullStr |
Materials information and mechanical response of TRIP/TWIP Ti alloys |
title_full_unstemmed |
Materials information and mechanical response of TRIP/TWIP Ti alloys |
title_sort |
materials information and mechanical response of trip/twip ti alloys |
publisher |
Nature Publishing Group |
series |
npj Computational Materials |
issn |
2057-3960 |
publishDate |
2021-06-01 |
description |
Abstract Materials innovation calls for an integrated framework combining physics-based modelling and data-driven informatics. A dislocation-based constitutive model accounting for both transformation-induced plasticity (TRIP) and twinning-induced plasticity (TWIP) was built to interpret the mechanical characteristics of metastable titanium alloys. Particular attention was placed on quantitatively understanding the composition-sensitive phase stability and its influence on the underlying deformation mechanism. For this purpose, a pseudoelastic force balance incorporating thermodynamics and micromechanics was applied to calculate the energy landscapes of β → α ″ martensitic transformation, {332}〈113〉 twinning and dislocation slip. Extensive material data were probed, computed and fed to the model. Our results revealed that TRIP and TWIP may operate simultaneously because of the presence of a noticeably overlapped energy domain, and confirmed {332}〈113〉 twinning is an energetically favourable deformation mechanism. The model validation further unveiled that the activation of β → α ″ transition remarkably enhances the strain-hardening and plasticity, even though the dynamically formed α ″ volume fraction is much less than that of deformation twinning. Our work suggests that the synchronised physical metallurgy and data-driven strategy allows to identify the compositional scenarios for developing high-performance engineering alloys. |
url |
https://doi.org/10.1038/s41524-021-00560-2 |
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