利用真空管式高温炉制得AlCrMnFeNiCu_x(x=0,0.5,1.0,1.5,2.0)多主元合金试样.结果表明,AlCrMnFeNiCu_(1.0)的显微组织最简单,组成相数远低于平衡相率所预期的相数.在AlCrMnFeNiCu_(0.5)和AlCrMnFeNiCu_(1.0)的晶内分布着大量微小颗粒,有的颗粒尺寸甚至迭到纳米级.Cu在舍金组织中起着粘结剂的作用.AlCrMnFeNiCu_(1.0)合金的硬度最高,增加Cu含量不利于提高合全硬度.等物质量比的多主元合金的耐蚀性优于非等物质量比的多主元合金,AlCrMnFeNiCu的耐蚀性优于AlCrMnFeNi.在非等物质量比的合金中,x越大,合金的耐蚀性越差.
Multi-principal elements alloy AlCrMnFeNiCu_x(x=0,0. 5,1. 0,1. 5, 2. 0) is prepared by high-temperature vacuum tube furnace. The results show that AlCrMnFeNiCu_(1.0) has the simplest microstructure whose phases are far less than that in equilibrium. In AlCrMnFeNiCu_(0.5) and AlCrMnFeNiCu_(1.0), a lot of particles exist in the den-drites, some are even as fine as nanometer scale. Copper plays the role of adhesive. AlCrMnFeNiCu_(1.0) has the highest hardness. Increasing the content of copper doesn't increase the hardness of alloys. The equi-molar alloys are more corrosion resistant than the non-equi-molar ones. AlCrMnFeNiCu is more corrosion resistant than AlCrMnFeNi.Among the non-equi-molar alloys, the corrosion resistance decreases with x increasing.
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