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,2021,50(1):129~137.[Wang Hongbin,Zhang Xinyu,Li Shengli,Xu Zhen,Song Hua,Lian Fabo,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.]
Mn添加对双辊铸轧6061铝合金富铁相转变影响的研究
投稿时间:2020-06-07  修订日期:2020-07-15
中文关键词:  双辊铸轧  6061铝合金  富铁相  微观组织  力学性能
基金项目: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)
中文摘要:
      本文研究了添加Mn对双辊铸轧6061铝合金铸轧板中富铁相转变及力学性能的影响。结合热力学模拟、金相显微镜(OM)、扫描电子显微镜(SEM)及透射电子显微镜(TEM)等手段分析6061铸轧板中富铁相转变及力学性能变化规律;利用室温拉伸实验机测试铸轧板力学性能。结果表明:当ω(Mn)=0.36 wt.%时6061铸轧板中富铁相完全由针状β-Al5FeSi相转变为颗粒状α-Al12(FeMn)3Si相,当ω(Mn)=0.54 wt.%时板材内部出现大量无规则块状与花瓣状α-Al15(FeMn)3Si2相聚集,从而显著改善了铸轧板中富铁相形貌;当ω(Mn)=0.36 wt.%时,6061铸轧板力学性能最佳,此时抗拉强度、屈服强度和伸长率分别为195.93 MPa、170.36 MPa和17.96%。
Effect of Mn on Microstructure and Properties of 6061 Aluminum Alloy Casting and Rolling Plate
英文关键词:twin-roll Casting  6061 aluminum alloy  iron-rich phase  microstructure  mechanical property
英文摘要:
      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%,
作者单位E-mail
王洪斌 辽宁科技大学 材料与冶金学院 whb605@163.com 
张新宇 辽宁科技大学 材料与冶金学院  
李胜利 辽宁科技大学 材料与冶金学院  
徐振 辽宁科技大学 材料与冶金学院  
宋华 辽宁科技大学 机械工程与自动化学院  
廉法博 辽宁科技大学 机械工程与自动化学院  
陈星宇 辽宁科技大学 材料与冶金学院  
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