摘要：研究了Co-Zr二元相图上4个共晶点成分配方Co₉₀Zr₁₀、Co₅₃Zr₄₇、Co₃₅Zr₆₅和Co₂₁Zr₇₉在球磨条件下的非晶态合金形成能力。分析结果表明,4种配方在一定的球磨时间内都能形成非晶态合金,其中非晶形成能力最强的为Co35Zr65。球磨时间对非晶的形成有重要影响,球磨时间过长,使形成的非晶态合金粉体反而向晶体转化。

关键词：机械合金化;非晶态合金;非晶形成准则;

Abstract: The glass forming ability of four eutectic compositions such as Co₉₀Zr₁₀、Co₅₃Zr₄₇、Co₃₅Zr₆₅ and Co₂₁Zr₇₉ based on the Co-Zr phase diagramwas studied under mechanical alloying conditions. X -ray diffraction(XRD) results show that all the alloys formed amorphous alloys. CosZresalloy play the best glass forming ability among four alloys. The millingtime plays an important role in formation of Co-Zr amorphous alloys.If themilling time is too long,the formed amorphous alloys will turn tocrystallization.

Keywords: mechanical alloying ;amorphous alloy ;glass forming criteria