摘要：本文研究了促进溶解元素(Cu,Ni,Fe)对挤压Mg-6Al合金的组织结构和腐蚀行为的影响。结果表明，Cu、Ni和Fe的添加可以显著改善Mg-6Al合金的组织结构和腐蚀行为。Cu的添加可以促进Mg-6Al合金的晶粒细化和形成更多的Mg2Cu相，从而提高合金的强度和耐腐蚀性能。Ni的添加可以促进Mg-6Al合金的晶粒细化和形成更多的Ni3Al相，从而提高合金的强度和耐腐蚀性能。Fe的添加可以促进Mg-6Al合金的晶粒细化和形成更多的Mg17Al12相，从而提高合金的强度和耐腐蚀性能。因此，Cu、Ni和Fe的添加可以有效地改善Mg-6Al合金的性能，提高其在工业应用中的可靠性和耐用性。

关键词：挤压Mg-6Al合金；促进溶解元素；组织结构；腐蚀行为

Abstract: This paper studies the effect of promoting dissolved elements (Cu, Ni, Fe) on the microstructure and corrosion behavior of extruded Mg-6Al alloy. The results show that the addition of Cu, Ni and Fe can significantly improve the microstructure and corrosion behavior of Mg-6Al alloy. The addition of Cu can promote the refinement of Mg-6Al alloy grains and the formation of more Mg2Cu phases, thereby improving the strength and corrosion resistance of the alloy. The addition of Ni can promote the refinement of Mg-6Al alloy grains and the formation of more Ni3Al phases, thereby improving the strength and corrosion resistance of the alloy. The addition of Fe can promote the refinement of Mg-6Al alloy grains and the formation of more Mg17Al12 phases, thereby improving the strength and corrosion resistance of the alloy. Therefore, the addition of Cu, Ni and Fe can effectively improve the performance of Mg-6Al alloy, and improve its reliability and durability in industrial applications.

Keywords: extruded Mg-6Al alloy; promoting dissolved elements; microstructure; corrosion behavior