Effect of Solid Solution Treatment on Microstructure and Mechanical Properties of Mg97Y2Zn1 Alloy

被引：15

作者：

Chen, Bin ^{[1
]}

Lin, Dongliang ^{[1
]}

Zeng, Xiaoqin ^{[1
]}

Lu, Chen ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2013年 / 22卷 / 02期

基金：

中国国家自然科学基金;

关键词：

ECAP; mechanical properties; Mg97Y2Zn1; microstructure; solid solution treatment; MAGNESIUM ALLOYS; MG97ZN1Y2; ALLOY; STRENGTH; EXTRUSION; ECAE; ZINC;

D O I：

10.1007/s11665-012-0254-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The X-phase grew in the matrix on the basal plane (0001) when Mg97Y2Zn1 alloy was solution treated at 415 and 540 degrees C. However, increasing the treatment temperature up to 560 degrees C, some X-phases may be dissolved. It was further observed that the dynamic recrystallization (DRX) process was completed and abnormal grain growth in the extruded alloy that was solution treated at 415 degrees C. On the other hand, the incomplete DRX process in the alloy treated at 560 degrees C was restrained by high content of induced yttrium in matrix. The Mg97Y2Zn1 alloys treated in the range of 415-560 degrees C exhibit excellent mechanical properties, among which the highest strength was obtained in the one treated at 560 degrees C. The high strength is believed to be owing to the ultra-fine grain, high density of plane faults of the long-period stacking structures, strain strengthening, and solid solution strengthening.

引用

页码：523 / 527

页数：5

共 21 条

[1]

Bhan S., 1993, J PHASE EQUILIB, V14, P634, DOI [10.1007/BF02669156, DOI 10.1007/BF02669156]

[2]

Brown R.E., 1991, LIGHT MET AGE, V49, P6

[3] Effects of yttrium and zinc addition on the microstructure and mechanical properties of Mg-Y-Zn alloys [J].

Chen, Bin ;

Lin, Dongliang ;

Zeng, Xiaoqin ;

Lu, Chen .

JOURNAL OF MATERIALS SCIENCE, 2010, 45 (09) :2510-2517

[4]

[冯娟妮 Feng Juanni], 2006, [中国稀土学报, Journal of the Chinese Rare Earth Society], V24, P86

[5] Novel hexagonal structure and ultrahigh strength of magnesium solid solution in the Mg-Zn-Y system [J].

Inoue, A ;

Kawamura, Y ;

Matsushita, M ;

Hayashi, K ;

Koike, J .

JOURNAL OF MATERIALS RESEARCH, 2001, 16 (07) :1894-1900

[6] Long period stacking structures observed inMg97Zn1Y2 alloy [J].

Itoi, T ;

Seimiya, T ;

Kawamura, Y ;

Hirohashi, M .

SCRIPTA MATERIALIA, 2004, 51 (02) :107-111

[7] Microstructure of high strength Mg97Zn1Y2 alloys prepared by extrusion of gas-atomized powder [J].

Itoi, T ;

Seimiya, T ;

Kawamura, Y ;

Hirohashi, M .

MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :721-726

[8] The process of grain refinement in equal-channel angular pressing [J].

Iwahashi, Y ;

Horita, Z ;

Nemoto, M ;

Langdon, TG .

ACTA MATERIALIA, 1998, 46 (09) :3317-3331

[9]

Janot C., 1994, Quasicrystals: A Primer

[10] Progressive steps in the platform science and technology for advanced magnesium alloys [J].

Kojima, Y ;

Aizawa, T ;

Kamado, S ;

Higashi, K .

MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :3-20

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