According to statistical analysis of literature data, a modified parameter criterion was found and defined as ζ= (T1-Tx/Tg)a·(Tg/T1-Tx) · Using linear regression method, an empirical formula between glass-formingrncritical diameter Dmax and ζ was derived, that is Dmax/mm=(l. 061 ± 0. 067)ζ+(2. 490 ± 0. 325). Compared with other criterions, the two formulas are more reliable and adapt for many kinds of alloy systems.%基于文献数据的统计分析,获得了非晶形成能力新参数的表达式ζ=(Tg/T1-Tx)a·(Tx-Tg/T1)b.用线性回归方法推导出形成非晶合金的临界尺寸Dmax与ζ的经验公式为Dmax/mm=(1.061±0.067)ζ+(2.490±0.325).与其他判据相比,这两个公式更加可靠,适用于多种合金体系.
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