Development of Biomedical Mg-1.0Ca-0.5Zn-0.1Y-0.03Mn (at%) Alloy by Rapidly Solidified Powder Metallurgy Processing

We investigated the alloy composition of Mg-Ca-Zn alloys suitable for rapidly solidified powder metallurgy (RS PM) processing and tried to develop biomedical RS PM with high strength, ductility, corrosion resistance. The was Mg-1.0Ca-0.5Zn (at%) in ternary alloys. An combined additions 0.1 at% Y 0.03 Mn exhibited excellent performance a tensile yield strength 376±17 MPa, an elongation 14.1±3.1%, rate 0.46±0.04 mm·year-1 when immersed HBSS, resulting achievement our target properties. Especially Mg-1.0Ca-0.5Zn-0.1Y-0.03Mn developed this study higher than that previously reported Mg-Zn-Ca(-Mn-Zr) or Mg-Ca-Zn(-Mn-Zr) ingot (IM) alloys, which were produced by single extrusion, double extrusion severe plastic deformation (SPD) cast ingots.