About relation between irradiation hardening of ferritic steels and ductile fracture toughness decrease

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46356088%3A_____%2F10%3A%230001692" target="_blank" >RIV/46356088:_____/10:#0001692 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1115/PVP2009-77026" target="_blank" >http://dx.doi.org/10.1115/PVP2009-77026</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1115/PVP2009-77026" target="_blank" >10.1115/PVP2009-77026</a>

Jazyk výsledku

angličtina

Název v původním jazyce

About relation between irradiation hardening of ferritic steels and ductile fracture toughness decrease

Popis výsledku v původním jazyce

We showed recently that temperature dependence of the ductile fracture toughness can be predicted on the base of two assumptions: 1) assumption of constant characteristic length, 2) assumption of proportionality between J-R curve slope and deformation work in unit volume, evaluated from zero to critical strain for initiation of deformation bands determined in plane strain geometry for material modeled by deformation theory of plasticity. Temperature dependence of ductile fracture toughness results simply from temperature dependence of the stress-strain curve. Irradiation hardening changes stress-strain behavior in a qualitatively different way: It is observed that irradiation hardening to certain yield stress level changes the stress-strain curve of the material in the same way as prestraining of the unirradiated material to the same flow stress level does. Equivalence of irradiation and prestraining concerns all key properties of deformation theory; namely the secant modulus should be

Název v anglickém jazyce

About relation between irradiation hardening of ferritic steels and ductile fracture toughness decrease

Popis výsledku anglicky

We showed recently that temperature dependence of the ductile fracture toughness can be predicted on the base of two assumptions: 1) assumption of constant characteristic length, 2) assumption of proportionality between J-R curve slope and deformation work in unit volume, evaluated from zero to critical strain for initiation of deformation bands determined in plane strain geometry for material modeled by deformation theory of plasticity. Temperature dependence of ductile fracture toughness results simply from temperature dependence of the stress-strain curve. Irradiation hardening changes stress-strain behavior in a qualitatively different way: It is observed that irradiation hardening to certain yield stress level changes the stress-strain curve of the material in the same way as prestraining of the unirradiated material to the same flow stress level does. Equivalence of irradiation and prestraining concerns all key properties of deformation theory; namely the secant modulus should be

Druh

D - Stať ve sborníku

CEP obor

JF - Jaderná energetika

OECD FORD obor

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Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, 3

ISBN

9780791843666

ISSN

0277-027X

e-ISSN

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Počet stran výsledku

5

Strana od-do

203-207

Název nakladatele

ASME

Místo vydání

—

Místo konání akce

Praha

Datum konání akce

1. 1. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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