4.7 Article

Forming novel texture and enhancing the formability in Mg-3Al-Zn alloy sheets fabricated by transverse gradient extrusion

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出版社

ELSEVIER
DOI: 10.1016/j.jmrt.2022.03.165

关键词

Magnesium alloy; Transverse gradient extrusion (TGE); Texture; Formability

资金

  1. Guangdong Academy of Science Fund [2020GDASYL-20200101001]
  2. Guangdong Major Project of Basic and Applied Basic Research [2020B0301030006]
  3. Natural Science Foundation of Guangdong Province [2020A1515011546]
  4. Postdoctoral Research Program on Innovative Practice in Jiangmen [JMBSH2021B06]
  5. Open Funding of Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guilin University of Technology [20KF-7, 20AA-8]
  6. National Natural Science Foundation of China [U1764253, 51971044, U1910213, 52001037, U207601]
  7. Qinghai Scientific & Technological Program [2018-GX-A1]
  8. Natural Science Foundation of Chongqing [cstc2019jcyj-msxmX0234, cstc2020jcyj-msxmX0184, cstc2019jscx-mbdxX0031]

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The transverse gradient extrusion (TGE) process was proposed for fabricating Mg-3Al-1Zn (AZ31) alloy sheet with tailored strong basal texture. A novel texture was formed in the TGE sheet, tilted about 65 degrees from normal direction (ND) to extrusion direction (ED), and elongated along the transverse direction (TD). The TGE sheet exhibited a large Erichsen value compared to the conventional extruded (CE) sheet, thanks to its unique texture and uniform fined grain structure.
Transverse gradient extrusion (TGE) process was firstly proposed to fabricate Mg-3Al-1Zn (AZ31) alloy sheet, thereby tailoring the strong basal texture of conventional extruded (CE) sheet. A novel texture formed in the TGE sheet, which tilted about 65 degrees from normal direction (ND) to extrusion direction (ED) and elongated along transverse direction (TD). The basal texture component disappeared completely. Because of the formation of unique texture and uniform fined grain structure by TGE process, the extruded sheet exhibited a large Erichsen value (IE) of 6.7 mm at room temperature, which was approximately 258% of the CE sheet. (c) 2022 The Author(s). Published by Elsevier B.V.This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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