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| APPROACH TO TRANSITION OF NON-CRYSTALLINE METAL GLASSES WITH AID OF METHOD OF POLYMER TRANSITION RESEARCH |
| YU Fusheng; LI Jiangou (Changchun Institute of Applied Chemistry; Academia Sinica); YAN Yanzhong; ZHANG Yanzhong (Shanghai Institute of Iron and Steel Research) (Manuscript received 22 September; 1983) |
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Cite this article:
YU Fusheng; LI Jiangou (Changchun Institute of Applied Chemistry; Academia Sinica); YAN Yanzhong; ZHANG Yanzhong (Shanghai Institute of Iron and Steel Research) (Manuscript received 22 September; 1983). APPROACH TO TRANSITION OF NON-CRYSTALLINE METAL GLASSES WITH AID OF METHOD OF POLYMER TRANSITION RESEARCH. Acta Metall Sin, 1984, 20(4): 313-322.
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Abstract The glass and crystal transition temperatures, T_g and T_c, the free volume, the activation energy and the enthalpy change at T_g and T_c of the following noncrystalline glasses: (Fe_(0.1)Ni_(0.35)Co_(0.55))_(78)Si_8B_(14), (Fe_(0.1)Ni_(0.30)Co_(0.55)Mo_(0.05))_(78)Si_8B_(14) and (Fe_(0.1)Ni_(0.30)Co_(0.55)Nb_(0.05))_(78)Si_8B_(14) were studied by applying the conception of transition theory used in polymer science with torsional braid analyzer, linear expansion apparatus, DSC and X-ray diffraction technique. The T_g and T_c as well as the activation energy of glass transition are all increased with the increase of atomic radius of the extra metal added, but the activation energy of crystallization is in opposite way. A correlation between the enthalpy change and the peak of damping was also observed. The above results may be valuable to the non-crystalline glass designer.
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Received: 18 April 1984
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