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IMPROVEMENT OF DUCTILITY AND TOUGHNESS AT ROOM TEMPERATURE IN Ni-RICH NiAl |
CHENG Tianyi;CANTOR B;FLOWER H M;McLEAN M Beijing Institute of Technology University of Oxford; UK Imperial College; UK associate professor;Faculty of Metallography; Beijing Institute of Technology; Beijing 100081 |
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Cite this article:
CHENG Tianyi;CANTOR B;FLOWER H M;McLEAN M Beijing Institute of Technology University of Oxford; UK Imperial College; UK associate professor;Faculty of Metallography; Beijing Institute of Technology; Beijing 100081. IMPROVEMENT OF DUCTILITY AND TOUGHNESS AT ROOM TEMPERATURE IN Ni-RICH NiAl. Acta Metall Sin, 1993, 29(3): 25-29.
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Abstract In rapidly solidified Ni-34.6 at-%Al alloy, when cooling rate duringsolidification reached the order of 10~6K/s, the size of the microstructures, such as grain andsubstructure of the martensite, decreased dramatically. The various kinds of interfaces withhigh density and homogeneous distribution resisted effectively the propagation of the cracksand resulted in localized plastic deformation ahead of the tips of microcracks. The ductilityand toughness at room temperature of the Ni-rich NiAl may be improved considerably.
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Received: 18 March 1993
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