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Thermal Expansion Behavior of Amorphous FeSiB Alloys

SU Chao , NIU Yuchao , LI Haifeng , HUANG Guowei , WANG Xianzhong

钢铁研究学报(英文版)

To study the thermal expansion of amorphous FeSiB alloys, the amorphous Fe78Si9B13 and Fe735Nb3 Cu1Si135B9 and their crystallized alloys were detected using thermal dilatometer. The results indicate that at the same temperature, the relative length change (ΔL/L0) values of the two Febased amorphous alloys decrease with increasing heating rate, but those of their crystallized alloys show an opposite trend. It is concluded that the effect of heating rate on the ΔL/L0 of amorphous and crystallized alloys is related to free volume and defects, respectively.

关键词: amorphous alloy , thermal expansion , heating rate , free volume , defect