振动压力对拔叉熔模铸造铝合金组织和力学性能的影响

Effect of Vibration Pressure on Microstructure and Mechanical Properties of Aluminum Alloy in Pull Fork Investment Casting

在ZL104拔叉熔模铸造凝固过程中施加机械振动和压力作用,研究了振动压力复合作用下,不同频率和压力对拔叉熔模铸造铝合金组织和力学性能的影响。试验结果表明:压力固定不变的情况下,铸件的抗拉强度和伸长率将随着频率的增加而呈现先增大后减小的变化趋势,振动频率为50 Hz时取得最大值;维持振动频率值恒定的情况下,铸件的抗拉强度和伸长率随着压力的增大逐渐增大,当压力值达到0.6 MPa后,铸件力学性能基本趋于稳定状态。

The effects of mechanical vibration and pressure on the microstructure and mechanical properties of ZL104 fork investment casting aluminum alloy under the combined action of vibration and pressure were studied.The test results show that when the pressure is fixed,the tensile strength and elongation of the casting will first increase and then decrease with the increase of frequency,and the maximum value will be obtained when the vibration frequency is 50 Hz;When the vibration frequency is fixed,the tensile strength and elongation of the casting gradually increase with the increase of pressure.When the pressure reaches 0.6 MPa,the mechanical properties of the casting basically tend to be stable.