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2014铝合金在经过热处理后有严重的晶间腐蚀倾向,抗晶间腐蚀的能力很差。通过我们深入研究它的组织变化和抗晶间腐蚀性能的关系,获得在塑性和强度下降不太大的情况下可大大提高它的抗晶间腐蚀性能的热处理工艺,得到组织中析出分布均匀,细小弥散的相,晶界处偏聚相也减少的试样,从而提高了硬度,抗晶间腐蚀腐蚀能力也大大提高。
2014 aluminum alloy after the heat treatment has a serious tendency of intergranular corrosion resistance to intergranular corrosion is poor. Through our in-depth study of the relationship between its organizational changes and intergranular corrosion resistance, obtained in the plastic and strength is not too big decline can greatly enhance its anti-intergranular corrosion resistance of the heat treatment process, the organization was precipitated evenly distributed, Fine dispersed phase, the segregation phase at the grain boundaries also reduce the sample, thereby increasing the hardness, resistance to intergranular corrosion and corrosion is also greatly enhanced.