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首页> 外文会议>The Fourth Asian Conference on Heat Treatment and Surface Engineering(第四届亚洲热处理及表面工程大会） >Effect of Equal Channel Angular Extrusion on Microstructure and Properties of Solution-aged 6061 Aluminum Alloy
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Effect of Equal Channel Angular Extrusion on Microstructure and Properties of Solution-aged 6061 Aluminum Alloy

机译：等通道角挤压对固溶时效6061铝合金组织和性能的影响

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The specimens of 6061 aluminum alloy (size:15 mm×l5 mm×65mm) were treated on solid solution and aging under the condition of solution at 530 ℃ for 1 h, then quenched in water, and aged at 180 ℃ for 8 h followed furnace cool. The equal channel angular extrusion(ECAE) process of four passes was carried out, the load-stroke curve is recorded at the same time. The metallographic structure and the surface hardness were investigated after deformation. The results show that the metal flow lines are basically consistent with the extrusion direction; the grains are elongated and refined with the increase in the pressing pass. The surface hardness reaches peak value after two passes deformation, then decreases; the difference of the hardness between the middle and the end region becomes smaller with the increase of passes of ECAE. The extrusion load also reaches the maximum value at the second pass. It indicates that the dislocation of the material tends to increase first and decrease then during the four passes ECAE processing.
机译：6061铝合金（15mm×15mm×65mm）试样经固溶处理，在530℃固溶条件下时效1 h，然后在水中淬火，在180℃时效8 h。炉子冷却。进行了四道次的等通道角挤压（ECAE）过程，同时记录了载荷-行程曲线。变形后研究了金相组织和表面硬度。结果表明，金属流线与挤压方向基本一致。随着压榨次数的增加，晶粒被拉长和细化。经过两次变形后，表面硬度达到峰值，然后降低；随着ECAE通过次数的增加，中部和端部区域之间的硬度差变小。挤出载荷在第二遍也达到最大值。这表明在四道次ECAE处理过程中，材料的位错倾向于先增大然后减小。

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