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

Abstract 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....

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Autores principales:	O. N. Senkov, D. B. Miracle
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5b0ff4c23c4044639e6f7ec69b9729fc
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spelling	oai:doaj.org-article:5b0ff4c23c4044639e6f7ec69b9729fc2021-12-02T13:19:21ZGeneralization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure10.1038/s41598-021-83953-z2045-2322https://doaj.org/article/5b0ff4c23c4044639e6f7ec69b9729fc2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83953-zhttps://doaj.org/toc/2045-2322Abstract 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, C12–C44. In this paper, we discover the link between these two criteria and show that they are identical for materials with cubic crystal structures.O. N. SenkovD. B. MiracleNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-4 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q O. N. Senkov D. B. Miracle Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure
description	Abstract 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, C12–C44. In this paper, we discover the link between these two criteria and show that they are identical for materials with cubic crystal structures.
format	article
author	O. N. Senkov D. B. Miracle
author_facet	O. N. Senkov D. B. Miracle
author_sort	O. N. Senkov
title	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_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_sort	generalization of intrinsic ductile-to-brittle criteria by pugh and pettifor for materials with a cubic crystal structure
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/5b0ff4c23c4044639e6f7ec69b9729fc
work_keys_str_mv	AT onsenkov generalizationofintrinsicductiletobrittlecriteriabypughandpettiforformaterialswithacubiccrystalstructure AT dbmiracle generalizationofintrinsicductiletobrittlecriteriabypughandpettiforformaterialswithacubiccrystalstructure
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Generalization of intrinsic ductile-to-brittle criteria by Pugh and Pettifor for materials with a cubic crystal structure

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