A DSC study of structural relaxation in metallic glasses prepared with different quenching rates
A DSC study of structural relaxation in metallic glasses prepared with different quenching rates
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DOI：
10.1016/0022-3093(84)90653-7
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发表时间：
1984
影响因子：
3.5
通讯作者：
L. Battezzati;G. Riontino;M. Baricco;A. Lucci;F. Marino
中科院分区：
文献类型：
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作者：
L. Battezzati;G. Riontino;M. Baricco;A. Lucci;F. Marino
采用不同转速的旋轮，通过熔体旋淬制备了Fe-Ni-Cr-P-B，Fe-Ni-Mo-B，Fe-B-C非晶合金。松弛焓，玻璃化转变温度Tg，结晶温度作为淬火速率的函数进行了研究。结构弛豫在420-450 K至650-670 K的温度范围内连续发生，并受恒定升温速率下的放热曲线所描述的激活能谱控制。通过适当的热处理分离的化学和拓扑结构的松弛的贡献。
Sets of amorphous Fe-Ni-Cr-P-B, Fe-Ni-Mo-B, Fe-B-C alloys have been prepared by melt spinning using different rotation speeds of the wheel. The enthalpy of relaxation, the glass transition temperature Tg, the crystallization temperature are studied as a function of quenching rate. Structural relaxation takes place continuosly in a wide temperature range from 420–450 K up to the Tgregion (650–670 K) and it is governed by a spectrum of activation energy described by the heat evolution curve at constant heating rate. The chemical and topological contribution to structural relaxation are separated by means of suitable thermal treatments.