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- Hallberg, HåkanLund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH (author)
Thermo-mechanically coupled model of diffusionless phase transformation in austenitic steel
- Article/chapterEnglish2010
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- Elsevier BV,2010
- electronicrdacarrier
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- LIBRIS-ID:oai:lup.lub.lu.se:fbef6972-a35f-4177-aa00-caa06e2ec347
- https://lup.lub.lu.se/record/1584074URI
- https://doi.org/10.1016/j.ijsolstr.2010.02.019DOI
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- Language:English
- Summary in:English
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- Abstract in UndeterminedA constitutive model of thermo-mechanically coupled finite strain plasticity considering martensitic phase transformation is presented. The model is formulated within a thermodynamic framework, giving a physically sound format where the thermodynamic mechanical and chemical forces that drive the phase transformation are conveniently identifiable. The phase fraction is treated through an internal variable approach and the first law of thermodynamics allows a consistent treatment of the internal heat generation due to dissipation of inelastic work. The model is calibrated against experimental data on a Ni-Cr steel of AISi304-type, allowing illustrative simulations to be performed. It becomes clear that the thermal effects considered in the present formulation have a significant impact on the material behavior. This is seen, not least, in the effects found on forming limit diagrams, also considered in the present paper.
Subject headings and genre
- TEKNIK OCH TEKNOLOGIER Maskinteknik hsv//swe
- ENGINEERING AND TECHNOLOGY Mechanical Engineering hsv//eng
- Phase transformation
- Thermo-mechanical processes
- Finite strain plasticity
- AIS1304
- Forming limit diagram
- FLD
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- Håkansson, PaulLund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)soli-pha (author)
- Ristinmaa, MattiLund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)hall-mri (author)
- HållfasthetsläraInstitutionen för byggvetenskaper (creator_code:org_t)
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- In:International Journal of Solids and Structures: Elsevier BV47:11-12, s. 1580-15910020-7683
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