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以机电一体化设备的机械传动部件用Mg-Nd-Zn合金为研究对象,采用重力金属铸造(GPC)、重力砂型铸造(GSC)、低压金属型铸造(LPC)和低压砂型铸造(LSC)4种不同的铸造方式,研究了铸造工艺对合金显微组织、拉伸力学性能和疲劳行为的影响。结果表明,4种铸造工艺下的合金中,GSC合金的屈服强度最低,LPC合金的屈服强度最高;4种铸造工艺下合金疲劳强度的差异性不大;GPC和GSC两种工艺下疲劳强度的波动幅度较小,均为4 MPa,而LPC工艺下的波动幅度最大,LSC铸造工艺下的疲劳强度波动最小。
The mechanical transmission components of the mechatronic equipment were investigated by using gravity casting (GPC), gravity sand casting (GSC), low pressure metal casting (LPC) and low pressure sand casting (LSC) 4 using Mg-Nd- Different casting methods were used to study the effect of casting process on the microstructure, tensile properties and fatigue behavior of the alloy. The results show that the yield strength of the GSC alloy is the lowest and the yield strength of the LPC alloy is the highest among the four casting processes. The fatigue strength of the alloy under the four casting processes is not very different. The fatigue strength The fluctuation range is small, both of which are 4 MPa, while the fluctuation range of LPC is the largest, and the fatigue strength of LSC casting process is the least.