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
Descripción
Sumario: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.

Ejemplares similares