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利用粉末冶金(P/M)法,以硅颗粒为增强相,制备铝基复合材料。以所得试样的密度和抗拉强度为目标函数,以硬脂酸锌含量、压制压力、烧结温度、保温时间为变量进行正交优化设计。结果表明,压制压力对密度影响最大,硬脂酸锌含量对抗拉强度影响最大;试样获得最大密度和最高抗拉强度的最佳方案为:硬脂酸锌含量0.5 wt%,压制压力500 MPa,烧结温度为575℃,保温时间为1.5 h。
The use of powder metallurgy (P / M) method, with silicon particles as reinforcing phase, prepared aluminum matrix composites. Taking the density and tensile strength of the obtained sample as the objective function, orthogonal design was carried out using zinc stearate, pressing pressure, sintering temperature and holding time as variables. The results showed that the compressive pressure had the most significant effect on the density, and the content of zinc stearate had the strongest influence on the tensile strength. The best solution for obtaining the maximum density and the highest tensile strength was: zinc stearate 0.5 wt% and pressing pressure 500 MPa , Sintering temperature is 575 ℃, holding time is 1.5 h.