Damage modelling: the current state and the latest progress on the development of creep damage constitutive equations for high Cr steels

Qiang Xu, Zhongyu Lu, Xue Wang

Research output: Contribution to journalReview article

5 Citations (Scopus)

Abstract

This paper reviews the fundamentals of the development of creep damage constitutive equations for high Cr steels including (1) a concise summary of the characteristics of creep deformation and creep damage evolution and their dependence on the stress level and the importance of cavitation for the final fracture; (2) a critical review of the state of art of creep damage equation for high Cr steels; (3) some discussion and comments on the various approaches; (4) consideration and suggestion for future work. It emphasises the need for better understanding the nucleation, cavity growth and coalesces and the theory for coupling method between creep cavity damage and brittle fracture and generalisation.

LanguageEnglish
Pages229-237
Number of pages9
JournalMaterials at High Temperatures
Volume34
Issue number3
DOIs
Publication statusPublished - 4 May 2017

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Steel
constitutive equations
Constitutive equations
Creep
steels
damage
cavities
cavitation flow
suggestion
Brittle fracture
Cavitation
nucleation
Nucleation

Cite this

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title = "Damage modelling: the current state and the latest progress on the development of creep damage constitutive equations for high Cr steels",
abstract = "This paper reviews the fundamentals of the development of creep damage constitutive equations for high Cr steels including (1) a concise summary of the characteristics of creep deformation and creep damage evolution and their dependence on the stress level and the importance of cavitation for the final fracture; (2) a critical review of the state of art of creep damage equation for high Cr steels; (3) some discussion and comments on the various approaches; (4) consideration and suggestion for future work. It emphasises the need for better understanding the nucleation, cavity growth and coalesces and the theory for coupling method between creep cavity damage and brittle fracture and generalisation.",
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AB - This paper reviews the fundamentals of the development of creep damage constitutive equations for high Cr steels including (1) a concise summary of the characteristics of creep deformation and creep damage evolution and their dependence on the stress level and the importance of cavitation for the final fracture; (2) a critical review of the state of art of creep damage equation for high Cr steels; (3) some discussion and comments on the various approaches; (4) consideration and suggestion for future work. It emphasises the need for better understanding the nucleation, cavity growth and coalesces and the theory for coupling method between creep cavity damage and brittle fracture and generalisation.

KW - creep cavity

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KW - creep damage mechanism

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KW - stress level dependence

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