METHOD FOR PREPARING POLYCRYSTALLINE STRUCTURES HAVING IMPROVED MECHANICAL AND PHYSICAL PROPERTIES
摘要
Polycrystalline materials are prepared by electrodeposition of a precursor material that is subsequently heat-treated to induce at least a threefold increase in the grain size of the material to yield a relatively high fraction of ‘special’ low &Sgr; grain boundaries and a randomized crystallographic texture. The precursor metallic material has sufficient purity and a fine-grained microstructure (e.g., an average grain size of 4 nm to 5 μm). The resulting metallic material is suited to the fabrication of articles requiring high mechanical or physical isotropy and/or resistance to grain boundary-mediated deformation or degradation mechanisms.
申请公布号
EP2222897(A1)
申请公布日期
2010.09.01
申请号
EP20080861084
申请日期
2008.12.18
申请人
INTEGRAN TECHNOLOGIES INC.
发明人
PALUMBO, GINO;BROOKS, IAIN;TOMANTSCHGER, KLAUS;LIN, PETER;AUST, KARL;NAGARAJAN, NANDAKUMAR;GONZALEZ, FRANCISCO