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以2024铝合金为对象,研究了形变热处理工艺对合金显微组织、抗拉强度和伸长率的影响。结果表明:在相同时效处理条件下,随着铝合金变形增加,合金晶界处第二相粒子数目逐渐增加;在相同的变形下,较长时效时间处理的2024铝合金具有较高的抗拉强度和较大的伸长率;在相同时效下,随着变形的增大,铝合金的抗拉强度先增大后减小,当变形为40%时铝合金的抗拉强度达到最大,而伸长率随着变形的增大逐渐降低。
Taking 2024 aluminum alloy as an example, the effect of deformation heat treatment on the microstructure, tensile strength and elongation of the alloy was studied. The results show that under the same aging treatment, the number of second-phase particles increases gradually with the deformation of the aluminum alloy, and the 2024 aluminum alloy with longer aging time has higher tensile strength under the same deformation The tensile strength of the aluminum alloy first increases and then decreases with the increase of the deformation, and the tensile strength of the aluminum alloy reaches the maximum when the deformation is 40% Elongation decreases with increasing deformation.