Refine your search�ソスF     
Report No.

Strengthening of $$alpha$$Mg and long-period stacking ordered phases in a Mg-Zn-Y alloy by hot-extrusion with low extrusion ratio

Harjo, S.   ; Gong, W.   ; Aizawa, Kazuya  ; Kawasaki, Takuro   ; Yamasaki, Michiaki*

An as-cast sample and two hot-extruded samples with different extrusion ratios (R) of Mg$$_{97}$$Zn$$_{1}$$Y$$_{2}$$ alloy containing the HCP $$alpha$$ matrix ($$alpha$$Mg) and the long-period stacking ordered phase (LPSO) of about 25-vol%, were used in tensile deformation in situ neutron diffraction experiments, to elucidate the effects of uniquely different microstructural evolutions in $$alpha$$Mg and LPSO with varying the R value to the mechanical properties. $$alpha$$Mg behaved as the soft phase and LPSO as the hard phase, and hot-extrusion improved the strength of both. At the R value of 5.0, a bimodal microstructure was created in $$alpha$$Mg, increasing largely the yield strength of $$alpha$$Mg. With increasing the R value to 12.5, the bimodal microstructure of $$alpha$$Mg collapsed and the yield strength of $$alpha$$Mg decreased. However, the strength of LPSO increased monotonously with increasing the R value due to the developments of kink bands and texture.



- Accesses




Category:Materials Science, Multidisciplinary



[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.