Friction stir processing of QE22 magnesium alloy to achieve ultrafine-grained microstructure with enhanced room temperature ductility and texture weakening

被引：47

作者：

Khan, F. ^{[1
]}

Karthik, G. M. ^{[2
]}

Panigrahi, S. K. ^{[1
]}

Ram, G. D. Janaki ^{[2
]}

机构：

[1] Indian Inst Technol Madras, Dept Mech Engn, Chennai 600036, India

[2] Indian Inst Technol Madras, Dept Met & Mat Engn, Chennai 600036, India

来源：

MATERIALS CHARACTERIZATION | 2019年 / 147卷 / 365-378期

关键词：

Magnesium silver rare earth alloy; Friction stir processing; Ultrafine-grained microstructure; Dynamic recrystallization; Texture; Mechanical properties; HIGH-STRAIN-RATE; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; ZR ALLOY; DYNAMIC RECRYSTALLIZATION; SUPERPLASTIC BEHAVIOR; TENSILE BEHAVIOR; MG ALLOYS; EVOLUTION; STRENGTH;

D O I：

10.1016/j.matchar.2018.11.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the current study, a cast magnesium silver rare earth (QE22) alloy was processed via multi-pass friction stir processing under the rapid cooling system with an objective to achieve ultrafine-grain microstructure. The friction stir processed QE22 alloy after two pass exhibited an excellent ductility of 24% along with adequate yield strength of 195 MPa at room temperature. This unique combination in the properties of QE22 alloy could be due to the integrated effect of grain refinement via friction stir processing and texture modification. The influence of rare earth element on the grain refinement, dynamic recrystallization and texture evolution of the friction stir processed QE22 samples have been studied and compared with the traditional Mg-Al-Zn alloy.

引用

页码：365 / 378

页数：14

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