材料工程2024，Vol.52Issue(8)：122-129,8.DOI:10.11868/j.issn.1001-4381.2022.000911
旋转摩擦挤压加工对不同时效态6061铝合金显微组织和力学性能的影响
Effect of rotational friction extrusion on microstructure and mechanical properties of 6061 aluminum alloys with different aging states
摘要
Abstract
6061 aluminum alloys with different aging states were prepared by rotational friction extrusion (RFE). The effect of RFE on the microstructure and mechanical properties of 6061 aluminum alloys with different aging states was investigated. The results show that the refractory AlFeMnSi phase of 6061 aluminum alloys can be broken by using RFE,resulting in the fine and uniform distribution of the AlFeMnSi phase in the alloy. Under the combined effects of frictional heat and deformation during RFE processing,the pre-precipitated coarse Mg2Si phase is dissolved and re-precipitated,resulting in that the pre-precipitated coarse Mg2Si phase has no effect on the particle stimulated nucleation (PSN) mechanism in the dynamic recrystallization of the material. Therefore,the size of grain exhibits negligible change by RFE. RFE reduces the strength of as-quenched 6061 aluminum alloys,while the strength of 6061 aluminum alloys with a long-term aging state can be increased by RFE. However,there are holes inside the material processed by RFE,which reduce the elongation of the alloys.关键词
6061铝合金/旋转摩擦挤压/析出相/动态再结晶Key words
6061 aluminum alloy/rotational friction extrusion/precipitated phase/dynamic recrystallization分类
矿业与冶金引用本文复制引用
涂文斌,夏春,王善林,徐卫平,胡锦扬,陈玉华,毛育青,陈宜..旋转摩擦挤压加工对不同时效态6061铝合金显微组织和力学性能的影响[J].材料工程,2024,52(8):122-129,8.基金项目
国家自然科学基金(52065047) （52065047）
江西省自然科学基金(20232BAB204052,20202BABL204003) （20232BAB204052,20202BABL204003）
江西省金属材料微结构调控重点实验室开放基金(EJ202003430) （EJ202003430）
南昌航空大学博士启动科研基金(EA202003425) （EA202003425）
