Abstract

An amorphous single phase and coexistent amorphous and hcp-Mg phases in the Mg-Zn-La system were found to form in the composition ranges of 20 to 40%Zn and 0 to 12%La and 12 to 20%Zn and 0 to 4%La, respectively. The hcp phase has an ellipsoidal morphology and the particle size and interparticle distance are in the range of 5 to 10 nm and 3 to 10 nm, respectively. The mixed phase alloys exhibit high mechanical strength combined with good ductility and the tensile strength (σ B ) and fracture elongation (∈ f ) at 288 K are 675 MPa and 4.3% for Mg 85 Zn 12 La 3

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