Recrystallization mechanism and the relationship between grain size and Zener-Hollomon parameter of Mg-Al-Zn-Ca alloys during hot compression

被引：81

作者：

Xu, S. W. ^{[1
]}

Kamado, S. ^{[1
]}

Honma, T. ^{[1
]}

机构：

[1] Nagaoka Univ Technol, Dept Mech Engn, Nagaoka, Niigata 9402188, Japan

来源：

SCRIPTA MATERIALIA | 2010年 / 63卷 / 03期

关键词：

Mg-Al-Zn-Ca alloys; Hot compression; Continuous dynamic recrystallization; Compounds; MAGNESIUM ALLOY; DYNAMIC RECRYSTALLIZATION; DEFORMATION; REFINEMENT; EXTRUSION; EVOLUTION; BEHAVIOR;

D O I：

10.1016/j.scriptamat.2010.04.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Continuous dynamic recrystallization (DRX) associating with {1 0 (1) over bar 1}-{1 0 (1) over bar 2} double twin, {1 0 (1) over bar 1} compression twin and {1 0 (1) over bar 2} tensile twin is observe during the hot compression of Mg-9, 10 wt.% Al-0.8 wt.% Zn-1 wt.% Ca alloys. The pinning effect of Al-Ca compounds, eutectic and precipitated Mg(17)Al(12) phase is observed at the DRXed grain boundaries. The pinning effect of Mg(17)Al(12) precipitates is greatly influenced by compression temperature, leading to a stronger influence of compression temperature on DRXed grain size than strain rate. Addition of 1 wt.% Ca to Mg-Al-Zn alloys reduces these influences. Crown Copyright (C) 2010 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved.

引用

页码：293 / 296

页数：4

共 13 条

[1] Non-Schmid behaviour during secondary twinning in a polycrystalline magnesium alloy [J].

Barnett, M. R. ;

Keshavarz, Z. ;

Beer, A. G. ;

Ma, X. .

ACTA MATERIALIA, 2008, 56 (01) :5-15

[2]

DULY D, 1995, ACTA METALL MATER, V43, P101, DOI 10.1016/0956-7151(94)00230-F

[3] Dynamic recrystallization behavior during compressive deformation in Mg-Al-Ca-RE alloy [J].

Hakamada, Masataka ;

Watazu, Akira ;

Saito, Naobumi ;

Iwasaki, Hajime .

JOURNAL OF MATERIALS SCIENCE, 2008, 43 (06) :2066-2068

[4] Processing and mechanical properties of fine-grained magnesium alloys [J].

Kubota, K ;

Mabuchi, M ;

Higashi, K .

JOURNAL OF MATERIALS SCIENCE, 1999, 34 (10) :2255-2262

[5] The influence of calcium and cerium mischmetal on the microstructural evolution of Mg-3Al-1Zn during extrusion and resulting mechanical properties [J].

Laser, T. ;

Hartig, Ch. ;

Nuernberg, M. R. ;

Letzig, D. ;

Bormann, R. .

ACTA MATERIALIA, 2008, 56 (12) :2791-2798

[6] NEW RECYCLING PROCESS BY EXTRUSION FOR MACHINED CHIPS OF AZ91 MAGNESIUM AND MECHANICAL-PROPERTIES OF EXTRUDED BARS [J].

MABUCHI, M ;

KUBOTA, K ;

HIGASHI, K .

MATERIALS TRANSACTIONS JIM, 1995, 36 (10) :1249-1254

[7] Effect of grain refinement on tensile ductility in ZK60 magnesium alloy under dynamic loading [J].

Mukai, T ;

Yamanoi, M ;

Watanabe, H ;

Ishikawa, K ;

Higashi, K .

MATERIALS TRANSACTIONS, 2001, 42 (07) :1177-1181

[8] Twinning, dynamic recovery and recrystallization in hot worked Mg-Al-Zn alloy [J].

Myshlyaev, MM ;

McQueen, HJ ;

Mwembela, A ;

Konopleva, E .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 337 (1-2) :121-133

[9] Effect of grain refinement on fracture toughness in extruded pure magnesium [J].

Somekawa, H ;

Mukai, T .

SCRIPTA MATERIALIA, 2005, 53 (09) :1059-1064

[10] Grain size control of commercial wrought Mg-Al-Zn alloys utilizing dynamic recrystallization [J].

Watanabe, H ;

Tsutsui, H ;

Mukai, T ;

Ishikawa, K ;

Okanda, Y ;

Kohzu, M ;

Higashi, K .

MATERIALS TRANSACTIONS, 2001, 42 (07) :1200-1205

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