1.辽宁科技大学 材料与冶金学院;2.辽宁科技大学 机械工程与自动化学院
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)
- Wang Hongbin 1
- Zhang Xinyu 1
- Li Shengli 1
- Xu Zhen 1
- Song Hua 2
- Lian Fabo 2
- Chen Xingyu 1
1.School of Material and Metallurgy,University of Science and Technology Liaoning,Liaoning Anshan;2.School of Mechanical Engineering and Automation,University of Science and Technology Liaoning,Liaoning Anshan
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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%。
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%,
引用本文
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.]
DOI：10.12442/j. issn.1002-185X.20200396
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- 收稿日期:2020-06-07
- 最后修改日期:2020-07-15
- 录用日期:2020-07-21
- 在线发布日期: 2021-02-05