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王洪斌,张新宇,李胜利,徐振,宋华,廉法博,陈星宇.Mn添加对双辊铸轧6061铝合金富铁相转变影响的研究[J].稀有金属材料与工程(英文),2021,50(1):129~137.[Wang Hongbin,Zhang Xinyu,Li Shengli,Xu Zhen,Song Hua,Lian Fabo and Chen Xingyu.Effect of Mn on Microstructure and Properties of 6061 Aluminum Alloy Casting and Rolling Plate[J].Rare Metal Materials and Engineering,2021,50(1):129~137.]
Effect of Mn on Microstructure and Properties of 6061 Aluminum Alloy Casting and Rolling Plate
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Received:June 07, 2020  
DOI:
Key words: twin-roll Casting  6061 aluminum alloy  iron-rich phase  microstructure  mechanical property
Foundation item:国家自然科学基金资助(项目号51874172);辽宁省自然科学基金(项目号2019-ZD-0025);辽宁科技大学青年基金(2019QN09)
Author NameAffiliation
Wang Hongbin,Zhang Xinyu,Li Shengli,Xu Zhen,Song Hua,Lian Fabo and Chen Xingyu  
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Abstract:
      In this paper, the effects on the microstructure and mechanical properties of twin-roll casting 6061 aluminum alloy plates with Mn addition were investigated. The microstructure of 6061 cast-rolled plates were analyzed by means of thermodynamic simulation and Optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscopy (TEM). The mechanical properties of 6061 cast-rolled plate with different Mn contents were tested using tensile tests. The results showed that, with the increase of Mn content of the 6061 cast-rolled plate, the iron-rich phase at the edge of 6061 cast-rolled plates gradually transformed from acicular β-Al5FeSi phase to granular α-Al12(FeMn)3Si phase, a large number of irregular blocks and a petal-like α-Al15(FeMn)3Si2 phase aggregated in the core(ω(Mn)=0.54 wt.%); When ω(Mn)=0.36 wt.%, the mechanical properties of 6061 cast-rolled plate were the best. At this time, the tensile strength, yield strength and elongation of cast-rolled plates were 195.93 MPa, 170.36 MPa and 17.96%,