Abstract
High pressure and high temperature state of long period stacking order structure (LPSO) synchronized with chemical concentration in Mg85Zn6Y9 alloy have been investigated. A stripe-patterned nanostructure consisting of D03 and hcp phases is formed in Mg85Zn6Y9 alloy by high pressure and high temperature treatments. The nanostripe patterns are created by the phase separation of LPSO synchronized with chemical concentration. A pressure–temperature phase diagram is given in this research. LPSO is stable below 673K, the D03+hcp mixed phase dominant above 973K under the pressure up to 20GPa. Phase separation under high pressure is useful for the fabrication of nanostructured metallic materials.
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