等通道转角挤压对L2工业纯铝力学性能的影响

Effect of ECAP on Mechanical Properties of Pure Aluminum L2

利用等通道转角挤压(ECAP)技术挤压工业纯铝L2,探讨了挤压次数对其力学性能的影响。结果表明,随挤压次数的增加,L2的抗拉强度和硬度得到显著提高,抗拉强度可提高95%,硬度提高70%。挤压1次后,其伸长率由40%下降至15%,此后伸长率基本保持稳定。

The effect of ECAP passes on materials mechanical properties of industrial pure aluminum L2 was investigated with equal channel angular pressing (ECAP) process . It shows that the ultimate tensile strength and hardness of pure aluminum L2 are improved greatly by ECAP process, the ultimate tensile strength and hardness of L2 alloy is 95% and 70% higher than that of the alloy before ECAP processed respectively. The elongation of the alloy reduces from 40% to 15% after 1 pass extrusion, and then changes very little with the increasing of extrusion passes.