连续铸造法制备大块非晶合金

Continuous Casting of Bulk Metallic Glass

摘要:

提出了一种适合于非晶合金铸坯连续生产的复合铸型连续铸造法并据此建立了一套水平连铸装置。采用拉停循环的间歇式拉坯方式成功连铸出直径10 mm长度60 cm的Zr基非晶合金棒材。金相、XRD、DSC等分析结果表明该方法制备的非晶合金有很好的非晶性。还基于非晶合金形成的CCT曲线，探讨了复合铸型连续铸造法形成非晶合金的冷却过程。该方法可用于非晶合金棒材工业化生产，并能降低生产成本，促进非晶合金研究的发展和应用

Abstract:

A new continuous casting method for production of bulk metallic glass (BMG) was proposed. An intermittent withdrawal procedure, in which a withdrawal cycle was employed, was adopted for the continuous casting of BMG. A Zr-based bulk glassy alloy rod with a diameter of 10 mm and a length of 60 cm was prepared using this method. The glassy nature of the rod was identified by optical microscopy, X-ray diffraction and differential scanning calorimetry. The continuous cooling transformation curve of the glassy alloy was adopted for the discussion of cooling history of the continuous cast. The newly developed continuous casting method can be used for the massive production of bulk glassy alloys, and it can effectively reduce production costs and accelerate the development and application of metallic glasses