Modeling of latent hardening produced by complex loading paths in FCC alloys

被引：67

作者：

Gerard, C. ^{[1
,2
,3
]}

Cailletaud, G. ^{[1
]}

Bacroix, B. ^{[3
]}

机构：

[1] MINES ParisTech, Ctr Mat, CNRS UMR 7633, F-91003 Evry, France

[2] Ecole Polytech, CNRS UMR 7649, Lab Mecan Solide, F-91128 Palaiseau, France

[3] Univ Paris 13, CNRS UPR 3407, Lab Sci Proc & Mat, F-93430 Villetaneuse, France

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2013年 / 42卷

关键词：

Crystal plasticity; Latent hardening; Complex loading paths; Finite element analysis; Scale transition rules; NON-PROPORTIONAL PATHS; SINGLE-CRYSTALS; MICROMECHANICAL APPROACH; STRAIN LOCALIZATION; PLASTIC ANISOTROPY; CYCLIC PLASTICITY; SIMPLE SHEAR; ELEMENT; BEHAVIOR; DEFORMATION;

D O I：

10.1016/j.ijplas.2012.10.010

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The present work aims at exploring self and latent hardening for FCC polycrystals under complex loading paths at room temperature. A relative quantification of the effect of the different interaction types between the 12 slip systems on the hardening is notably proposed. Combinations of simple loading sequences, such as tension and simple shear, with different orientations with regard to rolling direction, are considered. The material used is a 0.5 mm sheet of hot rolled OFHC copper. Two single crystal laws are independently identified. The experimental data are respectively compared with a finite element analysis, and two mean field models: the beta-rule and the Kroner's model. A new order of the hardening matrix coefficients is proposed for FCC materials. Both identifications are compared and give rise to the same trend. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：194 / 212

页数：19

共 104 条

[1] A new polycrystalline plasticity model to improve ratchetting strain prediction [J].