In-situ study of rules of nanostructure evolution, severe plastic deformations, and friction under high pressure

Autor:	Feng Lin, Valery I. Levitas, Krishan K. Pandey, Sorb Yesudhas, Changyong Park
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	High pressures severe plastic deformations in-situ synchrotron diffraction yield strength nanostructure evolution Materials of engineering and construction. Mechanics of materials TA401-492
Zdroj:	Materials Research Letters, Vol 11, Iss 9, Pp 757-763 (2023)
Druh dokumentu:	article
ISSN:	21663831 2166-3831
DOI:	10.1080/21663831.2023.2231983
Popis:	Severe plastic deformations under high pressure are used to produce nanostructured materials but were studied ex-situ. Rough diamond anvils are introduced to reach maximum friction equal to yield strength in shear and the first in-situ study of the evolution of the pressure-dependent yield strength and radial distribution of nanostructural parameters are performed for severely pre-deformed Zr. ω-Zr behaves like perfectly plastic, isotropic, and strain-path-independent and reaches steady values of the crystallite size and dislocation density, which are pressure-, strain- and strain-path-independent. However, steady states for α-Zr obtained with smooth and rough anvils are different, causing major challenge in plasticity theory.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/6dc58c2f29654c2591c49667ce8aca50 Zobrazit plný text záznamu View record in DOAJ