期刊
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
卷 528, 期 10-11, 页码 3809-3822出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.01.080
关键词
Magnesium; Texture; Rare earth elements; Plastic deformation
类别
资金
- Deutsche Forschungsgemeinschaft (DFG) [AL 1343/1]
- Chinese Scholarship Council CSC
The current study examines the influence of select rare earth elements: Gd, Nd, Ce, La and mischmetal (MM) on the sheet texture modification during warm rolling and annealing of a ZEK100 magnesium alloy, and the resulting formability and anisotropy during subsequent tensile testing at room temperature. It was found that all the investigated RE elements led to weak sheet textures and hence promoted enhanced ductility and reduced anisotropy over conventional Mg sheet. Gd was of a particular interest because it gave rise to a desired Mg sheet texture despite its coarsest grain size resulting in promising mechanical properties. It is suggested that solute related effects on the grain boundary migration and the relative strengths of different deformation mechanisms are responsible for altering the common concepts of recrystallization and grain growth during annealing, and the activation scenarios of slip and twinning during deformation. (C) 2011 Elsevier B.V. All rights reserved.
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