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| EFFECT OF CONCENTRATION AND TRANSITION METALS ON CRYSTALLIZATION OF Fe-BASED AMORPHOUS ALLOYS |
| by SHEN Baogen; ZHAN Wenshan; ZHAO Jiangao; CHEN Jinchang;PAN Xiaoshuo (Institute of Physucs; Academia Sinica; Beijing)(Manuscript received 28 January; 1985; revised manuscript 12 November; 1985) |
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Cite this article:
by SHEN Baogen; ZHAN Wenshan; ZHAO Jiangao; CHEN Jinchang;PAN Xiaoshuo (Institute of Physucs; Academia Sinica; Beijing)(Manuscript received 28 January; 1985; revised manuscript 12 November; 1985). EFFECT OF CONCENTRATION AND TRANSITION METALS ON CRYSTALLIZATION OF Fe-BASED AMORPHOUS ALLOYS. Acta Metall Sin, 1987, 23(5): 452-458.
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Abstract The crystallization kinetics studies during the recent years on the FeB and FeCoBSi Series of amorphous alloys as well as on the effect of alloying with various transition metals are summarized. The specimens were ribbons of 30—50 μm thickness and 1—2μm width prepared by the melt quenching technique. DSC and thermomagnetic measurements, and sometimes X-ray diffraction investigations were carried out. The main results are: (1) for the Fe_(100-x)B_x series, both the incipient crystallization temperature, T_(cr), and the corresponding activation energy, △E, exhibit a maximum value at x=16; (2) when the alloy composition was varied or an alloying transition element was added, both T_(cr) and △E increased with decreasing average number outer electrons per atom which was calculated by taking into account both the s, p and d electrons of the transition metal atoms. These and other less significant results are discussed in connection with various factors commonly regarded as effecting the stability of amorphous alloys.
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Received: 18 May 1987
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