单辊旋铸CuFe15合金的冷却速度模拟
Simulation of Cooling Rate for CuFe15 Alloy by Single Roller Melt-spinning
周志明1，唐丽文1，曹敏敏1，李 峰2
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作者单位：（1. 重庆理工大学 材料科学与工程学院 重庆市模具技术重点实验室，重庆 400050; 2. 宝山钢铁股份有限公司 冷轧厂，上海 200941）
中文关键字：Cu-Fe合金；单辊旋铸；冷却速度；快速凝固
英文关键字：Cu-Fe alloy; single roller melt-spinning; cooling rate; rapid solidification
中文摘要：建立了单辊旋铸凝固过程的数值分析模型，将真空室、冷却辊和样品带作为一个整体换热系加以考虑,以单辊旋铸CuFe15和CuFe10合金条带为模拟对象，通过采用一维傅立叶热传导方程描述热传输过程，结合热传导理论和凝固理论对热传导方程的数学解析求解，计算了单辊旋铸法制备Cu-Fe合金薄带的冷却速度,得到了铜辊制备200 μm厚CuFe15合金薄带的自由侧在凝固结束时的冷却速度为1.5 × 106 K/s。这与早期人们预测的单辊甩带法的冷却速度相当。
英文摘要：The numerical simulation model of the cooling rate for CuFe15 alloys by single roller melt-spinning were built, and the vacuum chamber, cooling roller and sample were taken into account as a holistic heat system. Based on the heat transfer theory and liquid solidification theory, the heat transfer during the rapids solidification process of Cu-Fe ribbons prepared by melt spinning can be approximately modeled by one-dimensional heat conduction equation, so that the cooling rate of the ribbon can be determined by the integration of this equation. According to the integration function, when the molten liquid of a 200 μm thick Cu-Fe ribbon on the free surface of melt spinning copper roller solidifies out, the calculated cooling rate of the ribbon is up to 1.5 × 106 K/s. The result is coincident very well with other estimation values reported before.