Texture, deformation twinning and hardening in a newly developed Mg-Dy-Al-Zn-Zr alloy processed with high pressure torsion

0467708 - ÚFM 2017 RIV GB eng J - Journal Article
Kocich, R. - Kunčická, L. - Král, Petr - Lowe, T. C.
Texture, deformation twinning and hardening in a newly developed Mg-Dy-Al-Zn-Zr alloy processed with high pressure torsion.
Materials and Design. Roč. 90, JAN (2016), s. 1092-1099. ISSN 0264-1275. E-ISSN 1873-4197
Institutional support: RVO:68081723
Keywords : Magnesium * High pressure torsion * Texture * Deformation twinning * Hardening
Subject RIV: JG - Metallurgy
Impact factor: 4.364, year: 2016

The influence of severe plastic deformation via high pressure torsion (HPT) on texture, deformation twinning and hardening in a newly developed Mg-Dy-Al-Zn-Zr alloy was observed in this study. Test specimens were cast, solution annealed, aged at 250 degrees C and 300 degrees C, and then subject to three revolutions of HPT at room temperature. Microhardness measurements were performed in order to evaluate structural changes introduced via ageing and deformation processing, while electron backscatter diffraction analyses (EBSD) were performed to evaluate texture and grain misorientations. Results showed that both, ageing temperatures and HPT processing significantly affected texture as well as twinning. Microhardness nearly doubled due to deformation processing, especially for aged samples.
Permanent Link: http://hdl.handle.net/11104/0265779