Incorporation of Temperature and Plastic Strain Effects into Local Approach to Fracture

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F21%3A00548206" target="_blank" >RIV/68081723:_____/21:00548206 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26110/21:PU143299

Result on the web

<a href="https://www.mdpi.com/1996-1944/14/20/6224" target="_blank" >https://www.mdpi.com/1996-1944/14/20/6224</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/ma14206224" target="_blank" >10.3390/ma14206224</a>

Result language

angličtina

Original language name

Incorporation of Temperature and Plastic Strain Effects into Local Approach to Fracture

Original language description

An unjustified simplification of the local quantitative criterion regarding cleavage nucleation is a key problem in the utilisation of the Local Approach to Fracture (LA), particularly to predict the fracture toughness within the ductile-to-brittle transition (DBT) region. The theoretical concept of the effect of both temperature and the plastic strain value on the crack nuclei (CN) generation rate in iron and ferritic steels is presented. It is shown how the plastic strain and temperature affect CN formation rate and, as a consequence, govern the shape of the temperature dependence of fracture toughness K-Jc and its scatter limits. Within the framework of the microscopic model proposed, dependences of the CN bulk density on the plastic deformation value and temperature are predicted. Convenient approximation dependences for incorporating this effect into the LA are suggested. The experimental data of reactor pressure vessel steel and cast manganese steel demonstrate that the use of these dependences enables one to predict, with sufficient accuracy, the effect of temperature on the value of fracture toughness and its scatter limits over the DBT region. It is shown that accounting for both the temperature and strain dependence of CN bulk density gives rise to the invariance of parameters of the Weibull distribution to temperature.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

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

Name of the periodical

Materials

ISSN

1996-1944

e-ISSN

1996-1944

Volume of the periodical

14

Issue of the periodical within the volume

20

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

6224

UT code for WoS article

000714590500001

EID of the result in the Scopus database

2-s2.0-85117573431