THE SUPERPLASTICITY AND DEFORMATION MECHANISM OF ULTRALIGHT BINARY Mg-8wt%Li ALLOY |
| |
Authors: | FR Cao and JZ Cui |
| |
Affiliation: | F.R. Cao and J.Z. Cui(Department of Metalforming,P.O.B,Northeastern University,Shenyang,China) |
| |
Abstract: | The maximum elongation-to-failure of 960% has been achieved in the Mg-8wt%Li alloy. It is shown by measurement of true stress-strain curve and microstructure observation that dynamic recrystallization takes place during superplastic deformation, which turns the banded grains into equiaxed grains. It is postulated by theoretical analysis that during superplastic deformation,continuous introduction of lattice dislocations into the phase interfaces contributes to the superplasticity in this alloy.During superplastic deformation,grain growth and cavity nucleation at α phase grain boundaries have also been observed. |
| |
Keywords: | superplasticity magnesium-lithium alloy dynamic recrystallization grain growth cavity |
本文献已被 CNKI 等数据库收录! |
| 点击此处可从《金属学报(英文版)》浏览原始摘要信息 |
|
点击此处可从《金属学报(英文版)》下载全文 |
|