Microstructure and mechanical properties of Mg-4.5Al-1.0Zn alloy sheets produced by twin roll casting and sequential warm rolling

被引：53

作者：

Chen, Hongmei ^{[1
,2
]}

Kang, Suk Bong ^{[1
]}

Yu, Huashun ^{[2
]}

Kim, Hyoung Wook ^{[1
]}

Min, Guanghui ^{[2
]}

机构：

[1] Korea Inst Mat Sci, Chang Won 641010, South Korea

[2] Shandong Univ, Sch Mat Sci & Engn, Jinan 250061, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 492卷 / 1-2期

关键词：

twin roll casting; warm rolling; grain refinement; AZ41M alloy sheet; mechanical property;

D O I：

10.1016/j.msea.2008.03.035

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Microstructure and mechanical properties of Mg-4.5Al-1.0Zn (designated as AZ41 M in short) alloy sheets produced by twin roll casting, sequential warm rolling and post annealing at 350 degrees C were studied in this paper. Microstructure of twin roll casting strip consisted of dendrite structure, eutectics and intermetallic Compounds located in the interdendritic region. AZ41 M alloy sheets showed higher strength and lower elongation after sequential warm rolling, while post annealing after warm rolling induced the decrease of strength and increase of elongation. This results in the balance of strength and elongation in AZ41 M alloy sheets. The grain refinement during manufacturing Processes was attributed to the formation of heavy shear bands, high dislocation density, twinning, and precipitates of Al2Ca/Mg2Ca or Al8Mn5 and the Ca dissolution into Mg17Al12 phase. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：317 / 326

页数：10

共 31 条

[1] Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B [J].

Agnew, SR ;

Duygulu, Ö .

INTERNATIONAL JOURNAL OF PLASTICITY, 2005, 21 (06) :1161-1193

[2] THEORY OF TENSILE DUCTILE-BRITTLE BEHAVIOR OF POLYCRYSTALLINE HCP MATERIALS WITH APPLICATION TO BERYLLIUM [J].

ARMSTRONG, RW .

ACTA METALLURGICA, 1968, 16 (03) :347-+

[3]

Avedesian M.M., 1999, ASM Specialty Handbook: Magnesium and Magnesium Alloys

[4]

Bae GT, 2007, MAGNESIUM TECHNOLOGY 2007, P89

[5] Influence of grain size on the compressive deformation of wrought Mg-3Al-1Zn [J].

Barnett, MR ;

Keshavarz, Z ;

Beer, AG ;

Atwell, D .

ACTA MATERIALIA, 2004, 52 (17) :5093-5103

[6] Grain refining of magnesium alloy AZ31 by rolling [J].

Chang, TC ;

Wang, JY ;

O, CM ;

Lee, S .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2003, 140 :588-591

[7] Effects of Ca and Be additions on high temperature oxidation behavior of AZ91 alloys [J].

Choi, BH ;

Park, IM ;

You, BS ;

Park, WW .

MAGNESIUM ALLOYS 2003, PTS 1 AND 2, 2003, 419-4 :639-644

[8]

Du WW, 2003, T NONFERR METAL SOC, V13, P1274

[9] Magnesium science, technology and applications [J].

Eliezer, D ;

Aghion, E ;

Froes, FH .

ADVANCED PERFORMANCE MATERIALS, 1998, 5 (03) :201-212

[10] Effects of Ca and Sr addition on mechanical properties of a cast AZ91 magnesium alloy at room and elevated temperature [J].

Hirai, K ;

Somekawa, H ;

Takigawa, Y ;

Higashi, K .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 403 (1-2) :276-280

← 1 2 3 4 →