High temperature deformation mechanisms of nano-structured ferritic alloys in the context of internal variable theory of inelastic deformation

Jeoung Han Kim; Thak Sang Byun; D. T. Hoelzer

doi:10.1016/j.jnucmat.2013.02.048

High temperature deformation mechanisms of nano-structured ferritic alloys in the context of internal variable theory of inelastic deformation

Jeoung Han Kim, Thak Sang Byun, D. T. Hoelzer

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Abstract

The stress relaxation behavior of 14YWT and ODS-Eurofer97 was examined within the framework of an internal-variable theory of inelastic deformation. Stress versus strain rate curves obtained by stress relaxation tests for 14YWT were described well by the equations for grain-matrix deformation while those of ODS-Eurofer97 were fitted with the combined curves of grain matrix deformation and grain boundary sliding. The sudden drop of total elongation of 14YWT was discussed in light of fracture surface observations. Grain boundary decohesion at 900 C was identified.

Original language	English
Pages (from-to)	458-462
Number of pages	5
Journal	Journal of Nuclear Materials
Volume	442
Issue number	1-3
DOIs	https://doi.org/10.1016/j.jnucmat.2013.02.048
State	Published - 2013

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10.1016/j.jnucmat.2013.02.048

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title = "High temperature deformation mechanisms of nano-structured ferritic alloys in the context of internal variable theory of inelastic deformation",

abstract = "The stress relaxation behavior of 14YWT and ODS-Eurofer97 was examined within the framework of an internal-variable theory of inelastic deformation. Stress versus strain rate curves obtained by stress relaxation tests for 14YWT were described well by the equations for grain-matrix deformation while those of ODS-Eurofer97 were fitted with the combined curves of grain matrix deformation and grain boundary sliding. The sudden drop of total elongation of 14YWT was discussed in light of fracture surface observations. Grain boundary decohesion at 900 C was identified.",

author = "Kim, {Jeoung Han} and Byun, {Thak Sang} and Hoelzer, {D. T.}",

year = "2013",

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volume = "442",

pages = "458--462",

journal = "Journal of Nuclear Materials",

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T1 - High temperature deformation mechanisms of nano-structured ferritic alloys in the context of internal variable theory of inelastic deformation

AU - Kim, Jeoung Han

AU - Byun, Thak Sang

AU - Hoelzer, D. T.

PY - 2013

Y1 - 2013

N2 - The stress relaxation behavior of 14YWT and ODS-Eurofer97 was examined within the framework of an internal-variable theory of inelastic deformation. Stress versus strain rate curves obtained by stress relaxation tests for 14YWT were described well by the equations for grain-matrix deformation while those of ODS-Eurofer97 were fitted with the combined curves of grain matrix deformation and grain boundary sliding. The sudden drop of total elongation of 14YWT was discussed in light of fracture surface observations. Grain boundary decohesion at 900 C was identified.

AB - The stress relaxation behavior of 14YWT and ODS-Eurofer97 was examined within the framework of an internal-variable theory of inelastic deformation. Stress versus strain rate curves obtained by stress relaxation tests for 14YWT were described well by the equations for grain-matrix deformation while those of ODS-Eurofer97 were fitted with the combined curves of grain matrix deformation and grain boundary sliding. The sudden drop of total elongation of 14YWT was discussed in light of fracture surface observations. Grain boundary decohesion at 900 C was identified.

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U2 - 10.1016/j.jnucmat.2013.02.048

DO - 10.1016/j.jnucmat.2013.02.048

M3 - Article

AN - SCOPUS:84887126375

SN - 0022-3115

VL - 442

SP - 458

EP - 462

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

IS - 1-3

ER -

High temperature deformation mechanisms of nano-structured ferritic alloys in the context of internal variable theory of inelastic deformation

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