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1.引言在超塑状态下,等温模锻镍基合金和钛合金的精密零件是一种新工艺.与一般闭式模锻或机加工相比,这种工艺能够显著降低零件成本.为了保证良好的充模性、变形的均匀性以及控制工件的局部应变率,很有必要研究金属在模锻过程中的流变特点.由于等温模锻是在高温下进行的,因而实现这种试验研究是相当困难的.本工作采用锡-铅共晶合金作为模拟
1. Introduction In the superplastic state, isothermal forging of nickel-base alloy and titanium alloy precision parts is a new technology, compared with the general closed die forging or machining, this process can significantly reduce the cost of parts.In order to ensure Good mold filling, deformation uniformity and control of the local strain rate of the workpiece, it is necessary to study the rheological characteristics of the metal in the forging process.As isothermal forging is carried out at high temperatures, and thus achieve this experimental study Is quite difficult.This work uses tin-lead eutectic alloy as a simulation