A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures

It is a conventional practice to adopt Weibull statistics with a modulus of 4 for characterizing the statistical distribution of cleavage fracture toughness of ferritic steels, albeit based on a rather weak physical justification. In this study, a statistical model for cleavage fracture toughness of...

Descripción completa

Detalles Bibliográficos
Autores principales: Qian, Guian, Lei, Wei-Sheng, Tong, Zhenfeng, Yu, Zhishui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Letter
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6470563/
https://www.ncbi.nlm.nih.gov/pubmed/30934560
http://dx.doi.org/10.3390/ma12060982
_version_ 1783411826209325056
author Qian, Guian
Lei, Wei-Sheng
Tong, Zhenfeng
Yu, Zhishui
author_facet Qian, Guian
Lei, Wei-Sheng
Tong, Zhenfeng
Yu, Zhishui
author_sort Qian, Guian
collection PubMed
description It is a conventional practice to adopt Weibull statistics with a modulus of 4 for characterizing the statistical distribution of cleavage fracture toughness of ferritic steels, albeit based on a rather weak physical justification. In this study, a statistical model for cleavage fracture toughness of ferritic steels is proposed according to a new local approach model. The model suggests that there exists a unique correlation of the cumulative failure probability, fracture toughness and yield strength. This correlation is validated by the Euro fracture toughness dataset for 1CT specimens at four different temperatures, which deviates from the Weibull statistical model with a modulus of four.
format Online
Article
Text
id pubmed-6470563
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-64705632019-04-27 A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures Qian, Guian Lei, Wei-Sheng Tong, Zhenfeng Yu, Zhishui Materials (Basel) Letter It is a conventional practice to adopt Weibull statistics with a modulus of 4 for characterizing the statistical distribution of cleavage fracture toughness of ferritic steels, albeit based on a rather weak physical justification. In this study, a statistical model for cleavage fracture toughness of ferritic steels is proposed according to a new local approach model. The model suggests that there exists a unique correlation of the cumulative failure probability, fracture toughness and yield strength. This correlation is validated by the Euro fracture toughness dataset for 1CT specimens at four different temperatures, which deviates from the Weibull statistical model with a modulus of four. MDPI 2019-03-25 /pmc/articles/PMC6470563/ /pubmed/30934560 http://dx.doi.org/10.3390/ma12060982 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Letter
Qian, Guian
Lei, Wei-Sheng
Tong, Zhenfeng
Yu, Zhishui
A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures
title A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures
title_full A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures
title_fullStr A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures
title_full_unstemmed A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures
title_short A Statistical Model of Cleavage Fracture Toughness of Ferritic Steel DIN 22NiMoCr37 at Different Temperatures
title_sort statistical model of cleavage fracture toughness of ferritic steel din 22nimocr37 at different temperatures
topic Letter
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6470563/
https://www.ncbi.nlm.nih.gov/pubmed/30934560
http://dx.doi.org/10.3390/ma12060982
work_keys_str_mv AT qianguian astatisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures
AT leiweisheng astatisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures
AT tongzhenfeng astatisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures
AT yuzhishui astatisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures
AT qianguian statisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures
AT leiweisheng statisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures
AT tongzhenfeng statisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures
AT yuzhishui statisticalmodelofcleavagefracturetoughnessofferriticsteeldin22nimocr37atdifferenttemperatures

Ejemplares similares