Phase field crystal study of deformation and plasticity in nanocrystalline materials

被引：163

作者：

Stefanovic, Peter ^{[1
,2
]}

Haataja, Mikko ^{[3
]}

Provatas, Nikolas ^{[1
,2
]}

机构：

[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L7, Canada

[2] McMaster Univ, Brockhouse Inst Mat Res, Hamilton, ON L8S 4L7, Canada

[3] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

来源：

PHYSICAL REVIEW E | 2009年 / 80卷 / 04期

关键词：

crystal orientation; elastic deformation; nanostructured materials; plastic deformation; plasticity; solid-state phase transformations; yield stress; HALL-PETCH RELATIONSHIP; MECHANICAL-BEHAVIOR; MICROSTRUCTURE; STRENGTH; FRACTURE; METALS;

D O I：

10.1103/PhysRevE.80.046107

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We introduce a modified phase field crystal (MPFC) technique that self-consistently incorporates rapid strain relaxation alongside the usual plastic deformation and multiple crystal orientations featured by the traditional phase field crystal (PFC) technique. Our MPFC formalism can be used to study a host of important phase transformation phenomena in material processing that require rapid strain relaxation. We apply the MPFC model to study elastic and plastic deformations in nanocrystalline materials, focusing on the "reverse" Hall-Petch effect. Finally, we introduce a multigrid algorithm for efficient numerical simulations of the MPFC model.

引用

页数：10

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