Abstract Scope |
LPSO magnesium alloys with a duplex structure of alpha-Mg and LPSO phases exhibit a remarkable balance of properties of high strength, heat resistance, flame resistance and reasonable corrosion resistance. Their manufacturing technology and applications are becoming more robust in Japan. Recently, we've succeeded in developing incombustible LPSO Mg-Zn-Y alloys. The ignition temperature was improved from 1,150 K to 1,300 K. The LPSO Mg-Zn-Y alloys, produced by an RS P/M processing with optimized manufacturing conditions, have excellent fracture toughness, with 20 MPa m1/2 or higher in fracture toughness KIc and >400 MPa in yield strength σy. We are now developing manufacturing technology of RS P/M LPSO Mg-Zn-Y alloys with excellent fracture toughness for aerospace application. Moreover, fine-gauge wires with 30 μm in diameter have been fabricated by drawing the RS/PM LPSO Mg-Zn-Y alloys. We are currently using these fine-gauge wires to design and develop bioabsorbable medical devices. |