In-situ characterization of continuous dynamic recrystallization during hot torsion of an Al-Si-Mg alloy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:822

Letter

Canelo-Yubero, David^1,2  Kovacs, Zsolt³  Fotso, J. F. Thierry Simonet¹  Tolnai, Domonkos⁴  Schell, Norbert⁴  Groma, Istvan³  Poletti, Cecilia¹ 

[1] Graz Univ Technol, Inst Mat Sci Joining & Forming, Kopernikusgasse 24-I, A-8010 Graz, Austria

[2] Nucl Phys Inst ASCR, CZ-25068 Rez, Czech Republic

[3] Eotvos Lorand Univ, Inst Phys, Dept Mat Phys, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary

[4] Helmholtz Zentrum Geesthacht, Inst Mat Res, Max Planck Str 1, D-21502 Geesthacht, Germany

关键词: Synchrotron x-ray diffraction;    Aluminium alloys;    Hot deformation;    Continuous dynamic recrystallization;    Dynamic recovery;   

DOI  :  10.1016/j.jallcom.2019.153282

来源: Elsevier

【 摘 要 】

An extruded Al-Si-Mg alloy was deformed by torsion at 400 degrees C during in-situ high energy synchrotron radiation diffraction. This technique is used to prove, by analysing texture changes and the coherently scattering domain size evolution, that dynamic recovery followed by continuous dynamic recrystallization are the main restoration mechanisms. Moreover, the dislocation density types corresponding to each stage of deformation are discussed and the recrystallization grade is calculated. (C) 2019 Elsevier B.V. All rights reserved.

【 授权许可】

Free