High temperature deformations of Mg-Y-Nd alloys fabricated by different routes

被引：28

作者：

Liu, Xibo ^{[1
,2
]}

Chen, Rongshi ^{[1
]}

Han, Enhou ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Shenyang 110016, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 497卷 / 1-2期

关键词：

Mg-5Y-4Nd alloy; Equal channel angular extrusion; Dynamic recrystallization; Superplasticity; Microstructure;

D O I：

10.1016/j.msea.2008.07.024

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The high temperature tensile properties and microstructural evolutions of Mg-5Y-4Nd (WE54) alloys with extrusion and extrusion followed by equal channel angular extrusion (ECAE) were investigated at elevated temperatures. The results suggested that the as-extruded specimens exhibited enhanced ductility at 400 and 450 degrees C, and a maximum elongation of 290% was obtained at 450 degrees C and 1 x 10(-3) s(-1), corresponding to the m-value of 0.38. On the other hand, ECAE following extrusion led to high strain and/or superplasticity behaviors, and a maximum elongation of 600% was achieved at 400 degrees C with the m-value of 0.49. In addition, the active energies of WE54 alloys with different fabrication routes were examined and compared. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：326 / 332

页数：7

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