Plastic anisotropy and deformation behavior of extruded Mg-Y sheets at elevated temperatures
作者： JW Lu , DD Yin , GH Huang , GF Quan , Y Zeng
DOI: 10.1016/J.MSEA.2017.06.047
关键词:
摘要: Abstract The plastic anisotropy in terms of tensile mechanical property, Lankford coefficient (r), and microstructure evolution as-extruded Mg-1Y (wt%) Mg-5Y sheets along the extrusion direction (ED), transverse (TD), diagonal (DD) were investigated detail at temperatures between 25 ℃ (RT) 300 ℃. exhibited anisotropic deformation behavior lower temperatures, nearly isotropic for 300 ℃ these three directions. For both sheets, ultimate strength (UA) elongation (EA) was not sensitive to temperature, while yield (YA) decreased significantly from 49.1% (Mg-1Y) 40.2% (Mg-5Y) RT 7.2% 2.7% 300 ℃, respectively. r values all directions first increased 0.66-1.4 0.81–1.98 (200 ℃) then 0.67–1.56 (300 ℃), those 1.04-2.05 1.18–1.35 (300 ℃) with increasing temperature. Few twins observed after tension large amounts occurred Mg-1Y. huge reduction weakened basal texture are believed increase value 0.66 1.04 RT. At dynamic recrystallized (DRX) grains appeared only a few DRX showed up vicinity grain boundaries Mg-5Y, which may be closely related boundary segregation yttrium atoms.
sci-hub.se 参考文章(52)
M. C. Gao, B. Zhang, S. Yang, S. M. Guo, Senary Refractory High-Entropy Alloy HfNbTaTiVZr Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 47, pp. 3333- 3345 ,(2016) , 10.1007/S11661-015-3105-Z
S.M. Zhu, J.F. Nie, M.A. Gibson, M.A. Easton, On the unexpected formation of rare earth hydrides in magnesium–rare earth casting alloys Scripta Materialia. ,vol. 77, pp. 21- 24 ,(2014) , 10.1016/J.SCRIPTAMAT.2014.01.007
Paloma Hidalgo-Manrique, S. B. Yi, J. Bohlen, D. Letzig, M. T. Pérez-Prado, Control of the Mechanical Asymmetry in an Extruded MN11 Alloy by Static Annealing Metallurgical and Materials Transactions A. ,vol. 45, pp. 3282- 3291 ,(2014) , 10.1007/S11661-013-2169-X
Farhoud Kabirian, Akhtar S. Khan, Thomas Gnäupel-Herlod, Visco-plastic modeling of mechanical responses and texture evolution in extruded AZ31 magnesium alloy for various loading conditions International Journal of Plasticity. ,vol. 68, pp. 1- 20 ,(2015) , 10.1016/J.IJPLAS.2014.10.012
Sean R. Agnew, Özgür Duygulu, Plastic anisotropy and the role of non-basal slip in magnesium alloy AZ31B International Journal of Plasticity. ,vol. 21, pp. 1161- 1193 ,(2005) , 10.1016/J.IJPLAS.2004.05.018
N. Stanford, M. Barnett, Effect of composition on the texture and deformation behaviour of wrought Mg alloys Scripta Materialia. ,vol. 58, pp. 179- 182 ,(2008) , 10.1016/J.SCRIPTAMAT.2007.09.054
S.M. Zhu, J.F. Nie, Serrated flow and tensile properties of a Mg–Y–Nd alloy Scripta Materialia. ,vol. 50, pp. 51- 55 ,(2004) , 10.1016/J.SCRIPTAMAT.2003.09.039
Na Zhou, Zhenyan Zhang, Li Jin, Jie Dong, Bin Chen, Wenjiang Ding, Ductility improvement by twinning and twin-slip interaction in a Mg-Y alloy Materials & Design. ,vol. 56, pp. 966- 974 ,(2014) , 10.1016/J.MATDES.2013.12.014
N. Stanford, I. Sabirov, G. Sha, A. La Fontaine, S. P. Ringer, M. R. Barnett, Effect of Al and Gd Solutes on the Strain Rate Sensitivity of Magnesium Alloys Metallurgical and Materials Transactions A. ,vol. 41, pp. 734- 743 ,(2010) , 10.1007/S11661-009-0107-8
S. A. Farzadfar, É. Martin, M. Sanjari, E. Essadiqi, S. Yue, Texture weakening and static recrystallization in rolled Mg–2.9Y and Mg–2.9Zn solid solution alloys Journal of Materials Science. ,vol. 47, pp. 5488- 5500 ,(2012) , 10.1007/S10853-012-6440-0