Viscoplastic behaviour of stainless steels AISI 316L and 316H

Youtsos, A.G.; Donéa, J.; Verzeletti, G.

doi:10.1007/bf01253578

Cited by 10 publications

(3 citation statements)

References 8 publications

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“…2.5) clearly shows a third, linear regime of behavior at low activation energies. The data in this regime was collected at very high strain rates using Hopkinson bar tests [65]. There is a good physical explanation for a third, rate dependent regime at high strain rate.…”

Section: Hmentioning

confidence: 97%

Development of ASME Division 5 Code proposal on temperature limits for simplified design methods

Messner

Sham

2018

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This report establishes proposed upper temperature limits for the ASME BP&V Code Section III, Division 5, Nonmandatory Appendix HBB-T design by elastic analysis provisions for bounding ratcheting strain and creep-fatigue damage in Class A high temperature nuclear reactor components. Limitations on the use of these design options are required because the design by elastic analysis methods rely on bounding theories that assume a non-unified, decoupled model of creep-plasticity. However, at high temperatures creep and plastic deformation become coupled and bounding theorems relying a decoupled material response may fail. The report describes a method for selecting appropriate upper temperature limits, demonstrates directly through a comparison to full inelastic simulations that the existing Code provisions can be nonconservative at high temperatures, and develops the requisite Code language required to implement the temperature limits in Section III, Division 5.

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Section: Hmentioning

confidence: 97%

Development of ASME Division 5 Code proposal on temperature limits for simplified design methods

Messner

Sham

2018

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“…Several partial models for 316H exist. Youtsos et al provide a model for the monotonic rate sensitivity of 316H [30] but do not address the cyclic or creep response of the material. Gong et al provide a viscoplastic Chaboche model for 316 [38], which is the model form used in this report.…”

Section: Previous Modelsmentioning

confidence: 99%

Development of the Technical Basis of a Unified Viscoplastic Model of 316H Stainless Steel for Incorporation into ASME Division 5

Messner

Phan

Sham

2019

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“…There have been many studies for Type 316H stainless steel [7][8][9][10][11][12][13][14]. However, the published material data of Type 316H are not enough for the inelastic material models to be used for the elevated temperature design of HTRs.…”

Section: Introductionmentioning

confidence: 99%

Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors

Koo

Yoon

2020

Energies

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In this paper, the inelastic material models for Type 316H stainless steel, which is one of the principal candidate materials for elevated temperature design of the advanced high temperature reactors (HTRs) pressure retained components, are investigated and the required material parameters are identified to be used for both elasto-plastic models and unified viscoplastic models. In the constitutive equations of the inelastic material models, the kinematic hardening behavior is expressed with the Chaboche model with three backstresses, and the isotropic hardening behavior is expressed by the Voce model. The required number of material parameters is minimized to be ten in total. For the unified viscoplastic model, which can express both the time-independent plastic behavior and the time-dependent viscous behavior, the constitutive equations have the same kinematic and isotropic hardening parameters of the elasto-plastic material model with two additional viscous parameters. To identify the material parameters required for these constitutive equations, various uniaxial tests were carried out at isothermal conditions at room temperature and an elevated temperature range of 425–650 °C. The identified inelastic material parameters were validated through the comparison between tests and calculations.

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Viscoplastic behaviour of stainless steels AISI 316L and 316H

Cited by 10 publications

References 8 publications

Development of ASME Division 5 Code proposal on temperature limits for simplified design methods

Development of ASME Division 5 Code proposal on temperature limits for simplified design methods

Development of the Technical Basis of a Unified Viscoplastic Model of 316H Stainless Steel for Incorporation into ASME Division 5

Inelastic Material Models of Type 316H for Elevated Temperature Design of Advanced High Temperature Reactors

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