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Enhanced Electroplasticity through Room-Temperature Dynamic Recrystallization in a Mg-3Al-1Sn-1Zn Alloy.
Xu, Hong; Zou, Yu-Jie; Huang, Yu; Ma, Pin-Kui; Guo, Zhi-Peng; Zhou, You; Wang, Yu-Peng.
Afiliación
  • Xu H; State Key Laboratory of Automotive Simulation and Control, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.
  • Zou YJ; Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.
  • Huang Y; State Key Laboratory of Automotive Simulation and Control, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.
  • Ma PK; State Key Laboratory of Automotive Simulation and Control, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.
  • Guo ZP; State Key Laboratory of Automotive Simulation and Control, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.
  • Zhou Y; State Key Laboratory of Automotive Simulation and Control, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.
  • Wang YP; State Key Laboratory of Automotive Simulation and Control, Nanling Campus, Jilin University, No. 5988 Renmin Street, Changchun 130025, China.
Materials (Basel) ; 14(13)2021 Jul 03.
Article en En | MEDLINE | ID: mdl-34279310
It has been well known that electric pulse can be utilized to enhance the plasticity of metals, which is attributed to the change of dislocation dynamics, e.g., localized planar slip to homogeneous wavy slip. Here, we show another effect of pulse current, which facilitates texture weakening through room-temperature dynamic recrystallization and additionally improve the plasticity of a polycrystalline Mg-3Al-1Sn-1Zn alloy. By conducting a tensile test under electrical pulse, we found that the peak flow stress and fracture strain depend strongly on current density. As peak current densities increases, the flow stress drops and the fracture strain increases. Our Electron Backscatter Diffraction results suggest that dynamic recrystallization occurs at room temperature, which develops a weakened texture. Our work provides a new insight into electroplasticity mechanism in Mg alloys.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2021 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza