快速判定大块金属玻璃（BMG）的玻璃形成能力（GFA）是开发新型BMG的关键。
The key step of exploiting new type BMG is to judge quickly the glass forming ability (GFA) of bulk metallic glasses (BMG).
研究表明：低的氧含量水平和高的过热度有利于提高该合金的玻璃形成能力，形成完全非晶的合金；
The results show: low oxygen content and enough large overheating level can improve the glass formation ability of the present ahoy.
简要介绍了表征合金玻璃形成能力（GFA）的参数和判据，特别是近几年新提出来的参数和判据。
The new criterions of glass forming ability (GFA) for bulk metallic glass were briefly analyzed and summarized.
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