Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure

Two classical criteria, by Pugh and Pettifor, have been widely used by metallurgists to predict whether a material will be brittle or ductile. A phenomenological correlation by Pugh between metal brittleness and its shear modulus to bulk modulus ratio was established more than 60 years ago. Nearly f...

Descripción completa

Detalles Bibliográficos
Autores principales: Senkov, O. N., Miracle, D. B.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7907099/
https://www.ncbi.nlm.nih.gov/pubmed/33633140
http://dx.doi.org/10.1038/s41598-021-83953-z
_version_ 1783655426154299392
author Senkov, O. N.
Miracle, D. B.
author_facet Senkov, O. N.
Miracle, D. B.
author_sort Senkov, O. N.
collection PubMed
description Two classical criteria, by Pugh and Pettifor, have been widely used by metallurgists to predict whether a material will be brittle or ductile. A phenomenological correlation by Pugh between metal brittleness and its shear modulus to bulk modulus ratio was established more than 60 years ago. Nearly four decades later Pettifor conducted a quantum mechanical analysis of bond hybridization in a series of intermetallics and derived a separate ductility criterion based on the difference between two single-crystal elastic constants, C(12)–C(44). In this paper, we discover the link between these two criteria and show that they are identical for materials with cubic crystal structures.
format Online
Article
Text
id pubmed-7907099
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-79070992021-02-26 Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure Senkov, O. N. Miracle, D. B. Sci Rep Article Two classical criteria, by Pugh and Pettifor, have been widely used by metallurgists to predict whether a material will be brittle or ductile. A phenomenological correlation by Pugh between metal brittleness and its shear modulus to bulk modulus ratio was established more than 60 years ago. Nearly four decades later Pettifor conducted a quantum mechanical analysis of bond hybridization in a series of intermetallics and derived a separate ductility criterion based on the difference between two single-crystal elastic constants, C(12)–C(44). In this paper, we discover the link between these two criteria and show that they are identical for materials with cubic crystal structures. Nature Publishing Group UK 2021-02-25 /pmc/articles/PMC7907099/ /pubmed/33633140 http://dx.doi.org/10.1038/s41598-021-83953-z Text en © This is a U.S. Government work and not under copyright protection in the US; foreign copyright protection may apply 2021 https://creativecommons.org/licenses/by/4.0/ Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Senkov, O. N.
Miracle, D. B.
Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure
title Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure
title_full Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure
title_fullStr Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure
title_full_unstemmed Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure
title_short Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure
title_sort generalization of intrinsic ductile-to-brittle criteria by pugh and pettifor for materials with a cubic crystal structure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7907099/
https://www.ncbi.nlm.nih.gov/pubmed/33633140
http://dx.doi.org/10.1038/s41598-021-83953-z
work_keys_str_mv AT senkovon generalizationofintrinsicductiletobrittlecriteriabypughandpettiforformaterialswithacubiccrystalstructure
AT miracledb generalizationofintrinsicductiletobrittlecriteriabypughandpettiforformaterialswithacubiccrystalstructure

Ejemplares similares