TY - JOUR
T1 - Large plasticity of a Mg42Li23Cu25Y10 multiphase composite
AU - Gonzalez Sanchez, Sergio
AU - Louzguine-Luzgin, Dimitri
AU - Perepezko, John
AU - Inoue, Akihisa
PY - 2011/6/25
Y1 - 2011/6/25
N2 - A novel Mg42Li23Cu25Y10 nanostructure-bcc ductile phase composite containing a Mg2Cu phase and amorphous zones has been obtained by injection casting. This alloy exhibits a large plastic engineering strain of 83% and plastic true strain of 177% with a flow stress at 4.3% deformation of 425 MPa. During compression, the deformation of the nanometer size bcc particles occurs by grain boundary sliding accommodated by flow controlled by grain boundary diffusion at room temperature. The hierarchical multiphase microstructure design allows for the operation and interaction of different shear deformation bands to provide large plastic strain at high strength.
AB - A novel Mg42Li23Cu25Y10 nanostructure-bcc ductile phase composite containing a Mg2Cu phase and amorphous zones has been obtained by injection casting. This alloy exhibits a large plastic engineering strain of 83% and plastic true strain of 177% with a flow stress at 4.3% deformation of 425 MPa. During compression, the deformation of the nanometer size bcc particles occurs by grain boundary sliding accommodated by flow controlled by grain boundary diffusion at room temperature. The hierarchical multiphase microstructure design allows for the operation and interaction of different shear deformation bands to provide large plastic strain at high strength.
KW - Magnesium alloys
KW - Mechanical characterization
KW - Plasticity
U2 - 10.1016/j.msea.2011.03.093
DO - 10.1016/j.msea.2011.03.093
M3 - Article
VL - 528
SP - 5576
EP - 5584
JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing
SN - 0921-5093
IS - 16-17
ER -