Effect of Cyclic Expansion-Extrusion Process on Microstructure, Deformation and Dynamic Recrystallization Mechanisms, and Texture Evolution of AZ80 Magnesium Alloy
Joint Authors
Xue, Yong
Chen, Shuaishuai
Liu, Haijun
Zhang, Zhimin
Ren, Luying
Bai, Bing
Source
Advances in Materials Science and Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-02-05
Country of Publication
Egypt
No. of Pages
10
Abstract EN
The microstructure, deformation mechanisms, dynamic recrystallization (DRX) behavior, and texture evolution of AZ80 magnesium alloy were investigated by three-pass cyclic expansion-extrusion (CEE) tests.
Optical microscopy (OM), electron back-scattered diffraction (EBSD), and X-ray diffraction (XRD) were employed to study microstructure, grain orientation, DRX mechanism, and texture evolution.
The results show that the grain sizes decrease continuously with the increase of CEE pass.
The grain refinement effect of the first pass is the most remarkable, and there appear a large number of twins.
After three-pass CEE, a well-distributed structure with fine equiaxed grains is obtained.
With the increase of CEE pass, the deformation mechanism changes from twinning to slipping and the DRX mechanism changes mainly from twinning-induced dynamic recrystallization (TDRX) to rotation dynamic recrystallization (RDRX) and then to continuous dynamic recrystallization (CDRX).
The grain misorientation between the new grains and matrix grains deceases gradually, and a relatively small angle misorientation is obtained after three-pass CEE.
Grain misorientations of the first two passes are attributed to TDRX and RDRX behaviors, respectively.
The grain refinement changes the deformation and DRX mechanisms of CEE process, which leads the (0002) basal texture intensity first decrease and then increase suddenly.
Eventually, the extremely strong basal texture is formed after three-pass CEE.
American Psychological Association (APA)
Xue, Yong& Chen, Shuaishuai& Liu, Haijun& Zhang, Zhimin& Ren, Luying& Bai, Bing. 2019. Effect of Cyclic Expansion-Extrusion Process on Microstructure, Deformation and Dynamic Recrystallization Mechanisms, and Texture Evolution of AZ80 Magnesium Alloy. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1119640
Modern Language Association (MLA)
Xue, Yong…[et al.]. Effect of Cyclic Expansion-Extrusion Process on Microstructure, Deformation and Dynamic Recrystallization Mechanisms, and Texture Evolution of AZ80 Magnesium Alloy. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1119640
American Medical Association (AMA)
Xue, Yong& Chen, Shuaishuai& Liu, Haijun& Zhang, Zhimin& Ren, Luying& Bai, Bing. Effect of Cyclic Expansion-Extrusion Process on Microstructure, Deformation and Dynamic Recrystallization Mechanisms, and Texture Evolution of AZ80 Magnesium Alloy. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1119640
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119640