Statistical aspects of brittle fracture toughness in low-alloyed steels

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F02%3A00006963" target="_blank" >RIV/61989100:27360/02:00006963 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Statistical aspects of brittle fracture toughness in low-alloyed steels

Popis výsledku v původním jazyce

This paper presents a method for quantifying probability of brittle fracture in low alloy steels. The proposed method shows how the probability of brittle fracture varies with stress intensity factor, temperature, deformation characteristics and microstructural parameters of low-alloyed steel. Application of this method on Ni-Cr steel demonstrated very good agreement of predicted temperature dependence of scatter in brittle fracture toughness with experimental results. The method enables also to calculate characteristic distance as a radial dimension from the crack tip where microcrack initiation is most probable. The characteristic distance of investigated Ni-Cr steel was found to decrease with increasing temperature. Microstructural mechanisms of initiation and propagation of brittle fracture were identified from results of fractography analysis. The proposed procedure represents a foundation for systematic control of relationship between stress-strain behaviors, toughness and reliab

Název v anglickém jazyce

Statistical aspects of brittle fracture toughness in low-alloyed steels

Popis výsledku anglicky

This paper presents a method for quantifying probability of brittle fracture in low alloy steels. The proposed method shows how the probability of brittle fracture varies with stress intensity factor, temperature, deformation characteristics and microstructural parameters of low-alloyed steel. Application of this method on Ni-Cr steel demonstrated very good agreement of predicted temperature dependence of scatter in brittle fracture toughness with experimental results. The method enables also to calculate characteristic distance as a radial dimension from the crack tip where microcrack initiation is most probable. The characteristic distance of investigated Ni-Cr steel was found to decrease with increasing temperature. Microstructural mechanisms of initiation and propagation of brittle fracture were identified from results of fractography analysis. The proposed procedure represents a foundation for systematic control of relationship between stress-strain behaviors, toughness and reliab

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F00%2F0170" target="_blank" >GA101/00/0170: Přenositelnost charakteristik lomové houževnatosti z hlediska hodnocení integrity komponent s defekty</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2002

Kód důvěrnosti údajů

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

Název periodika

Japan Society of Mechanical Engineering International Journal

ISSN

0916-1821

e-ISSN

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Svazek periodika

45

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

JP - Japonsko

Počet stran výsledku

8

Strana od-do

319-326

Kód UT WoS článku

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EID výsledku v databázi Scopus

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