A model for direct and inverse Hall-Petch relation for nanocrystalline ceramics

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A model for direct and inverse Hall-Petch relation for nanocrystalline ceramics. / Sheinerman, Alexander G.; Castro, Ricardo H.R.; Gutkin, Mikhail Yu.

In: Materials Letters, Vol. 260, 126886, 01.02.2020.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{061a6629cb814518ad518bfb5b6af5d0,

title = "A model for direct and inverse Hall-Petch relation for nanocrystalline ceramics",

abstract = "A model describing both direct and inverse Hall-Petch dependences observed in nanocrystalline ceramic MgAl2O4 spinel is proposed. Within the model, plastic deformation in nanocrystalline ceramics (NCCs) is realized via lattice dislocation slip combined with thermally activated grain boundary (GB) sliding. The model strongly suggests that the controlling parameter determining the type (direct or inverse) of the Hall-Petch dependence is the GB sliding activation energy. It is assumed that this quantity can be affected by the temperature regime of NCC synthesis and therefore rationalize conflicting data reported in the literature concerning the onset of the inverse Hall-Petch behavior in this system.",

keywords = "Ceramics, Hall-Petch effect, Hardness, Micromechanical modeling, LIMIT, GRAIN-SIZE",

author = "Sheinerman, {Alexander G.} and Castro, {Ricardo H.R.} and Gutkin, {Mikhail Yu.}",

year = "2020",

month = feb,

day = "1",

doi = "10.1016/j.matlet.2019.126886",

language = "English",

volume = "260",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - A model for direct and inverse Hall-Petch relation for nanocrystalline ceramics

AU - Sheinerman, Alexander G.

AU - Castro, Ricardo H.R.

AU - Gutkin, Mikhail Yu.

PY - 2020/2/1

Y1 - 2020/2/1

N2 - A model describing both direct and inverse Hall-Petch dependences observed in nanocrystalline ceramic MgAl2O4 spinel is proposed. Within the model, plastic deformation in nanocrystalline ceramics (NCCs) is realized via lattice dislocation slip combined with thermally activated grain boundary (GB) sliding. The model strongly suggests that the controlling parameter determining the type (direct or inverse) of the Hall-Petch dependence is the GB sliding activation energy. It is assumed that this quantity can be affected by the temperature regime of NCC synthesis and therefore rationalize conflicting data reported in the literature concerning the onset of the inverse Hall-Petch behavior in this system.

AB - A model describing both direct and inverse Hall-Petch dependences observed in nanocrystalline ceramic MgAl2O4 spinel is proposed. Within the model, plastic deformation in nanocrystalline ceramics (NCCs) is realized via lattice dislocation slip combined with thermally activated grain boundary (GB) sliding. The model strongly suggests that the controlling parameter determining the type (direct or inverse) of the Hall-Petch dependence is the GB sliding activation energy. It is assumed that this quantity can be affected by the temperature regime of NCC synthesis and therefore rationalize conflicting data reported in the literature concerning the onset of the inverse Hall-Petch behavior in this system.

KW - Ceramics

KW - Hall-Petch effect

KW - Hardness

KW - Micromechanical modeling

KW - LIMIT

KW - GRAIN-SIZE

UR - http://www.scopus.com/inward/record.url?scp=85074437717&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2019.126886

DO - 10.1016/j.matlet.2019.126886

M3 - Article

AN - SCOPUS:85074437717

VL - 260

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

M1 - 126886

ER -

ID: 48911329