TY - JOUR
T1 - Two phases nanocrystalline Cu-Ag-La alloy induced by crystallization of amorphous phase
AU - Park, J. S.
AU - Inoue, A.
AU - Tsai, A. P.
AU - Masumoto, T.
PY - 1996/3
Y1 - 1996/3
N2 - Crystallization has been studied in the amorphous Cu-Ag-La alloys by means of X-ray diffraction, differential scanning calorimeter and transmission electron microscopy. Amorphous Cu52Ag45La3 alloy was found to crystallize two distinct stages; first and second stages are due to primary crystallization of nanocrystalline fcc-Cu and fcc-Ag phases and growth of primary crystalline. The crystallization process is the typical nucleation and growth transformation. The n-values of JMA plot are in the range of 2.5 and 3, indicating a diffusion controlled growth in the eutectiod cells. Mechanical properties; σf and Hv, are clearly improved by the partial crystallization of amorphous phase.
AB - Crystallization has been studied in the amorphous Cu-Ag-La alloys by means of X-ray diffraction, differential scanning calorimeter and transmission electron microscopy. Amorphous Cu52Ag45La3 alloy was found to crystallize two distinct stages; first and second stages are due to primary crystallization of nanocrystalline fcc-Cu and fcc-Ag phases and growth of primary crystalline. The crystallization process is the typical nucleation and growth transformation. The n-values of JMA plot are in the range of 2.5 and 3, indicating a diffusion controlled growth in the eutectiod cells. Mechanical properties; σf and Hv, are clearly improved by the partial crystallization of amorphous phase.
KW - Amorphous alloy
KW - Copper-silver-lanthanum system
KW - Insoluble type alloy
KW - Partial crystallization
KW - Two phases nanocrystalline
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M3 - Article
AN - SCOPUS:33748866246
SN - 0040-8808
VL - 42
SP - 179
EP - 183
JO - Science Reports of the Rerearch Institutes Tohoku University Series A-Physics
JF - Science Reports of the Rerearch Institutes Tohoku University Series A-Physics
IS - 1
ER -