Strain hardening of as-extruded Mg-xZn (x=1, 2, 3 and 4 wt%) alloys

被引：116

作者：

Zhao, Chaoyue ^{[1
]}

Chen, Xianhua ^{[1
,2
]}

Pan, Fusheng ^{[1
,2
]}

Wang, Jingfeng ^{[1
,2
]}

Gao, Shangyu ^{[1
]}

Tu, Teng ^{[1
]}

Liu, Chunquan ^{[1
]}

Yao, Jiahao ^{[3
]}

Atrens, Andrej ^{[4
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Int Joint Lab Light Alloys, Minist Educ, Chongqing 400045, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400045, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China

[4] Univ Queensland, Sch Mech & Min Engn, St Lucia, Qld 4072, Australia

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2019年 / 35卷 / 01期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Mg-Zn alloy; Strain hardening; Dislocation; Basal texture; MAGNESIUM SINGLE-CRYSTALS; MECHANICAL-PROPERTIES; ROOM-TEMPERATURE; BASAL SLIP; TEXTURE EVOLUTION; GRAIN-SIZE; BEHAVIOR; ZN; MICROSTRUCTURE; DEFORMATION;

D O I：

10.1016/j.jmst.2018.09.015

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of Zn on the strain hardening of as-extruded Mg-xZn (x = 1, 2, 3 and 4 wt%) magnesium alloys was investigated using uniaxial tensile tests at 10(-3) s(-1) at room temperature. The strain hardening rate, the strain hardening exponent and the hardening capacity were obtained from true plastic stress-strain curves. There were almost no second phases in the as-extruded Mg-Zn magnesium alloys. Average grain sizes of the four as-extruded alloys were about 17.8 mu m. With increasing Zn content from 1 to 4 wt%, the strain hardening rate increased from 2850 MPa to 6810 MPa at (sigma-sigma(0.2))= 60 MPa, the strain hardening exponent n increased from 0.160 to 0.203, and the hardening capacity, He increased from 1.17 to 2.34. The difference in strain hardening response of these Mg-Zn alloys might be mainly caused by weaker basal texture and more solute atoms in the alpha-Mg matrix with higher Zn content. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.

引用

页码：142 / 150

页数：9

共 48 条

[1] SOLID SOLUTION STRENGTHENING OF MAGNESIUM SINGLE CRYSTALS .I. ALLOYING BEHAVIOUR IN BASAL SLIP [J].

AKHTAR, A ;

TEGHTSOONIAN, E .

ACTA METALLURGICA, 1969, 17 (11) :1339-+

[2] SOLID SOLUTION STRENGTHENING OF MAGNESIUM SINGLE CRYSTALS .2. EFFECT OF SOLUTE ON EASE OF PRISMATIC SLIP [J].

AKHTAR, A ;

TEGHTSOONIAN, E .

ACTA METALLURGICA, 1969, 17 (11) :1351-+

[3] Modeling of the work hardening in magnesium alloy sheets [J].

Balik, Jaroslav ;

Dobron, Patrik ;

Chmelik, Frantisek ;

Kuzel, Radomir ;

Drozdenko, Dania ;

Bohlen, Jan ;

Letzig, Dietmar ;

Lukac, Pavel .

INTERNATIONAL JOURNAL OF PLASTICITY, 2016, 76 :166-185

[4] Effect of heat treatment on strain hardening of ZK60 Mg alloy [J].

Chen, Xianhua ;

Pan, Fusheng ;

Mao, Jianjun ;

Wang, Jingfeng ;

Zhang, Dingfei ;

Tang, Aitao ;

Peng, Jian .

MATERIALS & DESIGN, 2011, 32 (03) :1526-1530

[5] Enhancement of tensile ductility and stretch formability of magnesium by addition of 0.2 wt%(0.035 at%)Ce [J].

Chino, Yasumasa ;

Kado, Motohisa ;

Mabuchi, Mamoru .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 494 (1-2) :343-349

[6] Compressive deformation behavior at room temperature-773 K 14 in Mg-0.2 mass%(0.035at.%)Ce alloy [J].

Chino, Yasumasa ;

Kado, Motohisa ;

Mabuchi, Mamoru .

ACTA MATERIALIA, 2008, 56 (03) :387-394

[7] Influence of texture and grain size on work hardening and ductility in magnesium-based alloys processed by ECAP and rolling [J].

del Valle, J. A. ;

Carreno, F. ;

Ruano, O. A. .

ACTA MATERIALIA, 2006, 54 (16) :4247-4259

[8] Effect of alloying elements on the elastic properties of Mg from first-principles calculations [J].

Ganeshan, S. ;

Shang, S. L. ;

Wang, Y. ;

Liu, Z. -K. .

ACTA MATERIALIA, 2009, 57 (13) :3876-3884

[9] Effects of grain size and dislocation density on strain hardening behavior of ultrafine grained AA1050 processed by accumulative roll bonding [J].

Gashti, S. O. ;

Fattah-alhosseini, A. ;

Mazaheri, Y. ;

Keshavarz, M. K. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2016, 658 :854-861

[10] Limitations in the use of the potentiodynamic polarisation curves to investigate the effect of Zn on the corrosion behaviour of as-extruded Mg-Zn binary alloy [J].

Ha, Heon-Young ;

Kang, Jun-Yun ;

Yang, Jie ;

Yim, Chang Dong ;

You, Bong Sun .

CORROSION SCIENCE, 2013, 75 :426-433

← 1 2 3 4 5 →