Microstructure characteristics during the multi-pass hot rolling and their effect on the mechanical properties of AM50 magnesium alloy sheet

被引：26

作者：

Ding, Hanlin ^{[1
]}

Hirai, Kazuki ^{[1
]}

Kamado, Shigeharu ^{[1
]}

机构：

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

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 15期

关键词：

AM50; alloy; Rough rolling; Intermediate annealing; Finish rolling; Precipitate; DYNAMIC RECRYSTALLIZATION; EVOLUTION; AZ31; TEMPERATURE; DEFORMATION;

D O I：

10.1016/j.msea.2010.02.068

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The multi-pass hot rolling process of AM50 magnesium alloy sheet was investigated in detailed in this paper. The rough rolling with a 10%, 30% or 50% reduction per pass and the subsequent intermediate annealing at 200 degrees C and 300 degrees C were adopted to study their effects on the microstructure and mechanical properties of finish-rolled sheet. Dynamically recrystallized grains nucleated inside deformation twins can be found at the beginning of hot rolling. The intermediate annealing process is not recommended for the rough-rolled sheet with a high reduction ratio per pass. The rolled AM50 sheet exhibits a high strength (UTS: 306 MPa, YS: 236 MPa) and a moderate elongation (15.3%). More excellent ductility (similar to 26%) can also be obtained with keeping a similar tensile strength to AZ31H sheet. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：3379 / 3385

页数：7

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