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采用挤压工艺对AZ31镁合金板和6061铝合金板进行多层挤压复合,结合扫描电镜、能谱分析仪、金相显微镜、EBSD以及万能拉伸试验机等分析手段,研究了不同坯料层数对AZ31/6061复合板的微观组织及力学性能的影响。实验结果表明:复合板镁合金侧中存在大量的细小再结晶晶粒和少量变形组织,复合板铝合金侧的晶粒呈现典型的带状结构,且周围有大量细小再结晶晶粒生成;此外,复合板中Mg/Al界面具有良好的冶金结合,且有不同厚度的界面反应层生成,其中P1板的界面反应层以Mg_2Al_3为主,P2板靠近镁合金侧有Mg_(17)Al_(12)生成,靠近铝合金层有Mg_2Al_3生成。
The extrusion process of AZ31 magnesium alloy plate and 6061 aluminum alloy plate extrusion composite, combined with scanning electron microscopy, energy dispersive spectroscopy, metallographic microscope, EBSD and universal tensile testing machine and other analytical tools to study the different blank layer Effect of Several Number on Microstructure and Mechanical Properties of AZ31 / 6061 Composite Plate. The experimental results show that there are a large number of fine recrystallized grains and a few deformed structures in the magnesium alloy sheet. The grains on the side of the aluminum alloy sheet exhibit a typical banded structure and a large number of fine recrystallized grains are formed around the composite sheet. In addition , The Mg / Al interface in the composite plate has a good metallurgical bond, and the interface reaction layer with different thickness is formed. The interface reaction layer of the P1 plate is dominated by Mg 2 Al 3 and the Mg plate is close to the Mg 17 Al 12 ) Generated, near the aluminum alloy layer with Mg_2Al_3 generation.