Modeling the room temperature deformation of a two-phase zirconium alloy

被引：55
|
作者：
Cai, S. [1 ]
Daymond, M. R. [1 ]
Holt, R. A. [1 ]
机构：
[1] Queens Univ, Dept Mech & Mat Engn, Kingston, ON K7L 3N6, Canada
来源：
ACTA MATERIALIA | 2009年 / 57卷 / 02期
基金：
加拿大自然科学与工程研究理事会;
关键词：
FEM; EPSC; Self-consistent; Asymmetric yielding; < c plus a > pyramidal slip; INTERGRANULAR STRESS GENERATION; METAL-MATRIX COMPOSITE; SELF-CONSISTENT MODEL; WT-PERCENT NB; NEUTRON-DIFFRACTION; IRRADIATION GROWTH; SINGLE-CRYSTALS; ELASTOPLASTIC DEFORMATION; PRESSURE TUBES; IN-REACTOR;
D O I：
10.1016/j.actamat.2008.09.020
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A new modeling approach, which combines the finite element method (FEM) and elasto-plastic self-consistent model (EPSC), was used to model the deformation behavior of hot-rolled Zr-2.5Nb plate material and was shown to be an effective method for describing the deformation of multiphase materials. The macroscopic mechanical properties and the phase interaction stresses were well captured by a unit cell FEM model. The average phase stress-Strain histories simulated by FEM were used as boundary conditions in an EPSC model to calculate the evolution of intergranular strains in both phases. Taking the asymmetric character of the <c + a> pyramidal slip during tension and compression into account in EPSC, the agreement between the experimental and the modeling results was considerably improved. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：407 / 419
页数：13
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