摘要
基于库伦摩擦和粘性耗散热源理论,利用非线性热传导模型研究了Ti_(40)Zr_(25)Ni_3Cu_(12)Be_(20)玻璃棒的旋转摩擦焊接。识别出了焊接表面的热力学区,同时根据旋转雷诺数和傅里叶数确定了大块金属玻璃最佳焊接窗口。通过选择合适的傅里叶数和旋转雷诺数,可以有效地控制焊接表面的结晶。
A non-linear heat transfer model, which is based on Coulomb friction and viscous dissipation heat sources, was developed to study the rotational friction welding of Ti40Zr25Ni3Cu12Be20 glassy rods. The thermodynamic zones of the welding surface were identified, and the optimum welding window for the bulk metallic glass was determined in terms of Reynolds number of rotation and Fourier number. CrystaUization at the welding surface can effectively be controlled by selecting suitable combinations of Fourier number and Reynolds number of rotation.
出处
《铸造技术》
北大核心
2017年第7期1729-1733,共5页
Foundry Technology
关键词
热传导
旋转摩擦焊接
数值模型
heat conduction
rotational friction welding
numerical model
