Microstructure and Texture Evolution of Mg-Gd-Y-Zn-Zr Alloy by Compression-Torsion Deformation

被引：12

作者：

Xu, Ping ^{[1
]}

Yu, Jianmin ^{[1
]}

Zhang, Zhimin ^{[1
]}

机构：

[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Shanxi, Peoples R China

来源：

MATERIALS | 2019年 / 12卷 / 17期

关键词：

Mg-Gd-Y-Zn-Zr alloy; compression-torsion; microstructure; texture; DYNAMIC RECRYSTALLIZATION BEHAVIOR; MECHANICAL-PROPERTIES; PHASE-COMPOSITION; MAGNESIUM ALLOY;

D O I：

10.3390/ma12172773

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Mg-13Gd-4Y-2Zn-0.5Zr alloy was subjected to compression-torsion deformation at 450 degrees C with a strain rate of 0.001-0.5 s(-1) using a Gleeble 3500 torsion unit. The effects of compression-torsion deformation on the microstructure and texture were studied, and the results showed that with the decrease of strain rate, the texture strength decreased, the number of dynamic precipitated particles increased, the degree of recrystallization increased, and the dynamic recrystallization mechanism changed from a continuous dynamic recrystallization mechanism to a continuous and discontinuous dynamic recrystallization mechanism. Along the direction of increasing radius, the degree of dynamic recrystallized grain (DRX) increased, the number of dynamic precipitated particles increased, and the texture strength slightly increased.

引用

页数：18

共 30 条

[1] Reducing tension - compression yield asymmetry by free end torsion in extruded Mg alloy [J].

Chen, H. B. ;

Liu, T. M. ;

Zhang, Y. ;

Zhai, Y. B. ;

He, J. J. .

MATERIALS SCIENCE AND TECHNOLOGY, 2016, 32 (02) :111-118

[2] Effects of LPSO/α-Mg interfaces on dynamic recrystallization behavior of Mg96.5Gd2.5Zn1 alloy [J].

Chen, Yuanli ;

Jin, Li ;

Dong, Jie ;

Wang, Fenghua ;

Li, Yangxin ;

Li, Yanjun ;

Pan, Hongchen ;

Nie, Xi .

MATERIALS CHARACTERIZATION, 2017, 134 :253-259

[3] Enhancement of tensile ductility of magnesium alloy produced by torsion extrusion [J].

Chino, Yasumasa ;

Sassa, Kensuke ;

Mabuchi, Mamoru .

SCRIPTA MATERIALIA, 2008, 59 (04) :399-402

[4] Study of the microstructure, texture and tensile properties of as-extruded AZ91 magnesium alloy [J].

Ding, Hanlin ;

Liu, Liufa ;

Kamado, Shigeharu ;

Ding, Wenjiang ;

Kojima, Yo .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 456 (1-2) :400-406

[5] Plasticity analysis by synchrotron radiation in a Mg97Y2Zn1 alloy with bimodal grain structure and containing LPSO phase [J].

Garces, G. ;

Morris, D. G. ;

Munoz-Morris, M. A. ;

Perez, P. ;

Tolnai, D. ;

Mendis, C. ;

Stark, A. ;

Lim, H. K. ;

Kim, S. ;

Shell, N. ;

Adeva, P. .

ACTA MATERIALIA, 2015, 94 :78-86

[6] Plastic deformation behavior of Mg12YZn with 18R long-period stacking ordered structure [J].

Hagihara, K. ;

Yokotani, N. ;

Umakoshi, Y. .

INTERMETALLICS, 2010, 18 (02) :267-276

[7] Fabrication of extraordinary high-strength magnesium alloy by hot extrusion [J].

Homma, T. ;

Kunito, N. ;

Kamado, S. .

SCRIPTA MATERIALIA, 2009, 61 (06) :644-647

[8]

Honma T, 2005, MAT SCI ENG A-STRUCT, V395, P301, DOI 10.1016/j.msea.2004.12.035

[9] Study on the feasibility of the torsion extrusion (TE) process as a severe plastic deformation method for consolidation of Al powder [J].

Jahedi, Mohammad ;

Paydar, Mohammad Hossein .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (20) :5273-5279

[10] Twinning, recrystallization and texture development during multi-directional impact forging in an AZ61 Mg alloy [J].

Jiang, M. G. ;

Yan, H. ;

Chen, R. S. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 650 :399-409

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