Cristin-resultat-ID: 1742547
Sist endret: 28. april 2020 13:45
NVI-rapporteringsår: 2020
Resultat
Vitenskapelig artikkel
2020

Effect of thermal residual stresses on ductile-to-brittle transition of a bi-material specimen by using the CAFE method

Bidragsytere:
  • Yang Li
  • Xiaobo Ren
  • Jianying He og
  • Zhiliang Zhang

Tidsskrift

European Journal of Mechanics. A, Solids
ISSN 0997-7538
e-ISSN 1873-7285
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2020
Publisert online: 2019
Trykket: 2020
Volum: 80
Sider: 1 - 12
Artikkelnummer: 103889
Open Access

Importkilder

Scopus-ID: 2-s2.0-85075472659

Beskrivelse Beskrivelse

Tittel

Effect of thermal residual stresses on ductile-to-brittle transition of a bi-material specimen by using the CAFE method

Sammendrag

The effect of residual stress on fracture of materials or structures has been widely studied. However, its influence on ductile-to-brittle transition (DBT), a crucial phenomenon of structural materials, has rarely been investigated so far. In the present study, employing the eigenstrain method residual stresses are introduced into a bi-material specimen, where two configurations of crack and interface, e.g., one with interface perpendicular and one parallel to the crack extension, are designed to study the influence of residual stress. The DBT of the bi-material specimen in the presence of residual stresses is numerically studied by using the CAFE method where temperature dependent surface energy is implemented to calculate absorbed energy of Charpy impact testing specimen. It is found that residual stress generated in the two configurations affect the DBT in a similar manner. The DBT curves generally shift to higher temperature due to the decrease of absorbed energy with the increase of residual stress. It is found that the decrease of absorbed energy in both configurations is caused by the additional constraint on the notch root, which is induced by the residual stress and can facilitate the fracture.

Bidragsytere

Yang Li

  • Tilknyttet:
    Forfatter
    ved Institutt for konstruksjonsteknikk ved Norges teknisk-naturvitenskapelige universitet
Aktiv cristin-person

Xiaobo Ren

  • Tilknyttet:
    Forfatter
    ved Materialer og nanoteknologi ved SINTEF AS

Jianying He

  • Tilknyttet:
    Forfatter
    ved Institutt for konstruksjonsteknikk ved Norges teknisk-naturvitenskapelige universitet

Zhiliang Zhang

  • Tilknyttet:
    Forfatter
    ved Institutt for konstruksjonsteknikk ved Norges teknisk-naturvitenskapelige universitet
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