合金非晶形成能力的研究进展

Progress in amorphous forming ability of alloys

在描述合金非晶形成能力的各种参数中 ,过冷液相区的范围ΔTx 和约化玻璃转变温度Trg是两个最重要最常用的参数 ,然而在实际应用过程中 ,仅用这两个参数并不能完全解释所得到的一些实验现象。于是 ,用来表征合金非晶形成能力的各种参数被相继提出。本文综述了各种表征合金非晶形成能力的有关参数 ,在这些参数中 ,每一参数都有其合理性与局限性 ,但都不能应用于所有合金系 ,因此 。

The supercooled liquid region ΔT x and reduced glass forming temperature T rg are very important and common in describing the amorphous forming ability (AFA) of alloys. However, some experimental phenomena cannot be interpreted successfully only by use of these two parameters during their practical use. Therefore, all kinds of parameters representing AFA of alloys were put forward in succession. In this paper, some related parameters representing AFA of alloys were summarized. Among these parameters, each one is both reasonable and limited and cannot be applied to all alloys. So, it was an urgent problem to search a more reasonable and universal parameter to represent AFA of different alloys.