Comparison study of constitutive models in predicting the hot deformation behavior of AA6060 and AA6063 Aluminium alloys

被引：34
作者：
El Mehtedi, M. [1 ]
Spigarelli, S. [1 ]
Gabrielli, F. [1 ]
Donati, L. [2 ]
机构：
[1] DIISM Univ Politecn Marche, Via Brecce Bianche, I-60131 Ancona, Italy
[2] Univ Bologna, Dept Engn Ind DIN, I-40136 Bologna, Italy
来源：
MATERIALS TODAY-PROCEEDINGS | 2015年 / 2卷 / 10期
关键词：
Aluminium alloy; Hot extrusion; Aging; SEM; Tensile test; Microstructure; TEMPERATURE FLOW BEHAVIOR; ELEVATED-TEMPERATURES; EQUATIONS; STRESS; STRAIN; STEEL;
D O I：
10.1016/j.matpr.2015.10.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The aim of the present paper is to study the hot deformation behavior of two different Al alloys (AA6060 and AA6063) by means of hot torsion tests in the 400-550 degrees C temperature range, typical of real extrusion temperatures. The behavior of the alloys, in terms of equivalent stress vs. equivalent strain, was modeled by different constitutive equations: Power law, Garofalo and Hensel-Spittel equations defined for different parameters. The flow stress curves predicted by the models were compared with experimental results for both alloys and discussed in order to define the accuracy of the models in predicting the materials hot flow stresses. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4732 / 4739
页数：8
相关论文
共 19 条
[1]  
[Anonymous], 1978, Kraft und Arbeitsbedarf bildsamer Formgebungsverfahren
[2]   Constitutive equations for elevated temperature flow behavior of commercial purity aluminum [J].
Ashtiani, H. R. Rezaei ;
Parsa, M. H. ;
Bisadi, H. .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 545 :61-67
[3]  
Bandar A.R., 2004, ORLANDO, V1, P169
[4]   Influence of data conversion methods from torsion tests on the Garofalo equation parameters for a high nitrogen steel [J].
Castellanos, Jesus ;
Rieiro, Ignacio ;
El Mehtedi, Mohamad ;
Carsi, Manuel ;
Ruano, Oscar A. .
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH, 2010, 101 (06) :787-793
[5]   Grain evolution analysis and experimental validation in the extrusion of 6XXX alloys by use of a lagrangian FE code [J].
Donati, Lorenzo ;
Segatori, Antonio ;
El Mehtedi, Mohamad ;
Tomesani, Luca .
INTERNATIONAL JOURNAL OF PLASTICITY, 2013, 46 :70-81
[6]  
Donati L, 2011, AIP CONF PROC, V1353, P455, DOI [10.1063/1.3590600, 10.1063/1.3589557]
[7]   Numerical modeling of subgrain growth of hot extruded Al-4.5Zn-1 Mg alloy in the presence of nanosized dispersoids [J].
Eivani, A. R. ;
Zhou, J. ;
Duszczyk, J. .
COMPUTATIONAL MATERIALS SCIENCE, 2014, 86 :9-16
[8]   Modelling of the flow behaviour of wrought aluminium alloys at elevated temperatures by a new constitutive equation [J].
El Mehtedi, M. ;
Musharavati, F. ;
Spigarelli, S. .
MATERIALS & DESIGN, 2014, 54 :869-873
[9]   Hot workability in process modeling of a bearing steel by using combined constitutive equations and dynamic material model [J].
El Mehtedi, M. ;
Gabrielli, F. ;
Spigarelli, S. .
MATERIALS & DESIGN, 2014, 53 :398-404
[10]  
El Mehtedi M., 2009, METALL ITAL, V6, P33
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