Ultra-high Strength Nanostructured Mg
Abstract
The technological goal of the research program was to develop Mg alloys with revolutionary mechanical properties by taking advantage of our fundamental knowledge of the interactions between multiscale microstructures (i.e., nano-grain, micron-grain, and amorphous). The scientific goal of the research was to provide fundamental insight into novel phenomena, plasticity mechanisms in HCP systems, the relationship between twin characteristics and grain size, and strengthening and plasticity mechanisms in Mg. Key research activities conducted during the performance period of 10/1/2010-12/31/2013 include: (1) synthesis of nanostructured pure Mg and Mg alloy powders by cryomilling; (2) analysis of deformation twinning in nanostructured Mg and Mg alloy powders; (3) synthesis, microstructural and mechanical characterization of bulk nanostructured pure Mg and Mg alloys; (4) synthesis of nanostructured Mg-Y powders by gas atomization and cryomilling; (5) investigation of stacking faults and twinning in ultrafine grained Mg-Y alloy; (6) mechanical characterization of ultrafine grained Mg-Y alloy; (7) dynamic grain refinement in nanostructured Mg and Mg-Y deformed at cryogenic temperatures; (8) influence of mechanically milled powder and high pressure on spark plasma sintering of Mg-Cu-Gd metallic glasses; (9) microstructure and mechanical behavior of Mg-10Li-3Al-2.5Sr alloy; (10) influence of extrusion on microstructure and mechanical behavior of Mg-9Li-3Al-xSr alloys; (11) study of multiple and extended shear band formation in MgCuGd metallic glass during high pressure torsion; and (12) observation of prism stacking faults contiguous to a {10-12} twin in a Mg Y alloy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 31, 2014
- Accession Number
- ADA620671
Entities
People
- Enrique J. Lavernia
Organizations
- University of California