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GEOMETRICAL ANALYSIS ON PLASTIC DEFORMATION OF POLYCRYSTALLINE METALS AND THE ROOM TEMPERATURE PLASTICITY OF TOW-PHASE TiAl-BASE ALLOYS |
LIANG Wei; YANG Dezhuang( Centre of Testing and Measuring; Taiyuan University of Technologyl Taiyuan 030024)( Harbin Institute of Technology; Harbin 150001)Comspondent: LIANG Wei; prodessor Tel: (0351)6010610 Fax: (0351)6041237 |
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Cite this article:
LIANG Wei; YANG Dezhuang( Centre of Testing and Measuring; Taiyuan University of Technologyl Taiyuan 030024)( Harbin Institute of Technology; Harbin 150001)Comspondent: LIANG Wei; prodessor Tel: (0351)6010610 Fax: (0351)6041237. GEOMETRICAL ANALYSIS ON PLASTIC DEFORMATION OF POLYCRYSTALLINE METALS AND THE ROOM TEMPERATURE PLASTICITY OF TOW-PHASE TiAl-BASE ALLOYS. Acta Metall Sin, 1998, 34(6): 597-602.
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Abstract Geometrical analysis on plastic deformation charateristics of polycrystallineaggregates proved that the total length of dislocation lines that cat through a unit volume is ininverse proportion to the grain size under given deformation strains, while the total length ofdislocstion lines emitted per unit area of grain boundary is independent of grain size. Furthermore, the distortion of grain boundaries was proved to be propotion to the grain size. On thisbasis and combined with the analysis on the deformation mechanisms, the relationships betweenroom temperature elongation and grain size of two--phase Toil--base alloys were established asfollows:
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Received: 18 June 1998
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