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Dislocations, vacancies and solute diffusion in physical based plasticity model for AISI 316L
Dalarna University, School of Technology and Business Studies, Materials Technology.ORCID iD: 0000-0002-2544-9168
Dalarna University, School of Technology and Business Studies, Mechanical Engineering.
2008 (English)In: Mechanics of materials (Print), ISSN 0167-6636, E-ISSN 1872-7743, Vol. 40, no 11, p. 907-919Article in journal (Refereed) Published
Abstract [en]

A physical based model for the evolution of flow stress of AISI 316L from room temperature up to 1300 °C, strains up to 0.6 and strain rates from 0.0005 up to 10 s-1 is developed. One set of tests have been used for model calibration and another more complex set of tests for its validation. The model is based on a coupled set of evolution equations for dislocation density and (mono) vacancy concentration. Furthermore, it includes the effect of diffusing solutes in order to describe dynamic strain ageing (DSA). The model described the overall flow stress evolution well with exception of the details of the effect of the DSA phenomenon. Its numerical solution is implemented in a format suitable for large-scale finite element simulations.

Place, publisher, year, edition, pages
Elsevier , 2008. Vol. 40, no 11, p. 907-919
Keyword [en]
Flow stress; Dynamic strain ageing; Dislocation density; Diffusion; Vacancy concentration; Austenitic stainless steel
National Category
Materials Engineering
Research subject
Stålformning och ytteknik
Identifiers
URN: urn:nbn:se:du-3481DOI: 10.1016/j.mechmat.2008.05.005ISI: 000261029100002OAI: oai:dalea.du.se:3481DiVA, id: diva2:519967
Available from: 2008-11-14 Created: 2008-11-14 Last updated: 2017-12-07Bibliographically approved

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Lindgren, Lars-Erik

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  • nn-NB
  • sv-SE
  • Other locale
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Output format
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