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通过设计的振动挤压侧向流动方案,对Zr55Cu30Al10Ni5块体非晶合金在过冷液态区的微成形能力进行了研究。利用DEFORM-3D有限元分析软件,对Zr55Cu30Al10Ni5块体非晶合金在振动场作用下的流动变形能力进行了数值模拟分析,在450℃下选取不同振幅38N~760N和不同频率0.1Hz~2.0Hz进行成形实验,测量了非晶合金在横向槽内的流动长度。结果表明,引入振动场可以有效提高非晶合金的微成形能力,随着频率的增大,流动长度明显增大;随着振幅的增大,流动长度先增大后趋向平稳。从材料损耗模量、自由体积理论和表面效应3个方面对该现象进行了分析,表明振动成形是一种提高非晶合金微成形能力的有效方法。
The micro-forming ability of Zr55Cu30Al10Ni5 bulk amorphous alloy in the supercooled liquid region was studied by the design of lateral flow scheme of vibration squeezing. The flow deformation capacity of Zr55Cu30Al10Ni5 bulk amorphous alloy under vibration field was numerically simulated by DEFORM-3D finite element analysis software. The deformation and deformation of Zr55Cu30Al10Ni5 bulk amorphous alloy were investigated at 450 ℃ with different amplitudes of 38 N ~ 760 N and different frequencies of 0.1 Hz ~ 2.0 Hz Forming experiments were performed to measure the flow length of the amorphous alloy in the transverse groove. The results show that the introduction of vibration field can effectively improve the micro-forming ability of amorphous alloys. The flow length increases obviously with the increase of the frequency. With the increase of amplitude, the flow length first increases and then becomes stable. This phenomenon is analyzed from three aspects of material loss modulus, free volume theory and surface effect, which shows that vibration shaping is an effective method to improve the micro-forming ability of amorphous alloys.