Post-welding formability of AZ31 magnesium alloy

被引：10
作者：
Bruni, C. [2 ]
Forcellese, A. [2 ]
Gabrielli, F. [2 ]
Simoncini, M. [1 ]
机构：
[1] Univ E Campus, I-22060 Novedrate, CO, Italy
[2] Univ Politecn Marche, Dept Mech, I-60131 Ancona, Italy
来源：
MATERIALS & DESIGN | 2011年 / 32卷 / 05期
关键词：
SHEETS; TEMPERATURE; BEHAVIOR; MICROSTRUCTURE;
D O I：
10.1016/j.matdes.2011.01.004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The plastic flow behaviour and formability of friction stir welded AZ31 magnesium alloys were widely investigated. Flow curves were obtained in extended ranges of temperature (250-350 degrees C) and strain rate (0.001-0.1 s(-1)) by means of uniaxial tensile tests; furthermore, forming limit curves were determined using the hemispherical punch method in the same range of temperature but with a constant crosshead speed of 0.1 mm/s. The results were compared with those obtained, under the same experimental conditions, on the base material. The flow stress levels of joint and base material are very similar up the peak of the flow curve although the equivalent strains at the peak and to failure are usually lower than those of base material. However, at the highest temperature and lowest strain rate investigated (350 degrees C and 0.001 s(-1)), the flow behaviour of the welded joint tends to be similar to the one of the base alloy. Finally, formability of the friction stir welded material, evaluated in terms of forming limit curves, is usually lower than the one of the base material. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2988 / 2991
页数：4
相关论文
共 23 条
[1]   Strain hardening behavior of a friction stir welded magnesium alloy [J].
Afrin, N. ;
Chen, D. L. ;
Cao, X. ;
Jahazi, M. .
SCRIPTA MATERIALIA, 2007, 57 (11) :1004-1007
[2]   Friction Stir Welding of Magnesium Alloys under Different Process Parameters [J].
Bruni, C. ;
Buffa, G. ;
Fratini, L. ;
Simoncini, M. .
THERMEC 2009, PTS 1-4, 2010, 638-642 :3954-+
[3]   Effect of temperature, strain rate and fibre orientation on the plastic flow behaviour and formability of AZ31 magnesium alloy [J].
Bruni, C. ;
Forcellese, A. ;
Gabrielli, F. ;
Simoncini, M. .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2010, 210 (10) :1354-1363
[4]   Warm Formability of AZ31 Magnesium Alloy Sheets Under Different Process Conditions [J].
Bruni, C. ;
Forcellese, A. ;
Gabrielli, F. ;
Simoncini, M. .
RECENT DEVELOPMENTS IN THE PROCESSING AND APPLICATIONS OF STRUCTURAL METALS AND ALLOYS, 2009, 604-605 :379-387
[5]   Tool Geometry in Friction Stir Welding of Magnesium Alloy Sheets [J].
Bruni, C. ;
Buffa, G. ;
d'Apolito, L. ;
Forcellese, A. ;
Fratini, L. .
SHEET METAL 2009, 2009, 410-411 :555-+
[6]   Tailor-welded blanks of different thickness ratios effects on forming limit diagrams [J].
Chan, SM ;
Chan, LC ;
Lee, TC .
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2003, 132 (1-3) :95-101
[7]   Deep drawing of square cups with magnesium alloy AZ31 sheets [J].
Chen, FK ;
Huang, TB ;
Chang, CK .
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE, 2003, 43 (15) :1553-1559
[8]   Stretch formability of AZ31 Mg alloy sheets at different testing temperatures [J].
Chino, Yasumasa ;
Iwasaki, Hajime ;
Mabuchi, Mamoru .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 466 (1-2) :90-95
[9]   Development of a formulation to describe the work softening behaviour of magnesium sheets for heated deep drawing processes [J].
Doege, E ;
Kurz, G .
CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2001, 50 (01) :177-180
[10]   Formability and microstructure of AZ31 magnesium alloy sheets [J].
Forcellese, A. ;
El Mehtedi, M. ;
Simoncini, M. ;
Spigarelli, S. .
SHEET METAL 2007, 2007, 344 :31-+
123