Quick Search:       Advanced Search
徐振,张伟,王洪斌,张新宇,宋华,李胜利,吴灿,霍英玉,赵龙.温轧对6061铝合金铸轧板材显微组织和力学性能的影响[J].稀有金属材料与工程(英文),2020,49(11):3692~3701.[Zhen Xu,Wei Zhang,Hongbin Wang,Xinyu Zhang,Hua Song,Shengli Li,Can Wu,Yingyu Huo and Long Zhao.Effect of Warm Rolling on Microstructure and Mechanical Properties of 6061 Aluminum Alloy Cast-Rolled Sheet[J].Rare Metal Materials and Engineering,2020,49(11):3692~3701.]
Effect of Warm Rolling on Microstructure and Mechanical Properties of 6061 Aluminum Alloy Cast-Rolled Sheet
Download Pdf  View/Add Comment  Download reader
Received:November 29, 2019  Revised:May 11, 2020
DOI:
Key words: 6061 aluminum alloy  twin roll casting  warm rolling  microstructure  mechanical properties
Foundation item:国家自然科学基金项目(NSFC(51874172,51374128))
Author NameAffiliation
Zhen Xu,Wei Zhang,Hongbin Wang,Xinyu Zhang,Hua Song,Shengli Li,Can Wu,Yingyu Huo and Long Zhao  
Hits: 51
Download times: 1
Abstract:
      The effect of different warm rolling temperature and cumulative reduction on microstructure and mechanical properties of a 6061 aluminum alloy sheet rolled by twin roll casting was studied. Multi-scale characterization techniques were employed to study the microstructures of cast-rolled and warm-rolled sheets. The mechanical properties such as hardness, strength and elongation were also measured. The results show that the cast-rolled 6061 alloy mainly contains heat-resistant phase e.g. Al0.7Fe3Si0.3, and Al9Fe0.84Mn2.16Si, and a small amount of strengthening phase Mg2Si.With increasing rolling passes, the shape of second phases gradually changes from mesh and sheet shape to line shape along the rolling direction, and finally to fine granular shape. After warm rolling, the amount of a new precipitate Al0.5Fe3Si0.5 and Mg2Si increases. Additionally, the hardness linearly increases with increasing reduction, and the maximum slope (2.42114) of hardness curves is found at the warm rolling temperature of 370℃. At this temperature, fine AlFeSi precipitates and Mg2Si phases are uniformly dispersed in the alloy. The highest hardness of 84.28HV is obtained for plate. The tensile strength, yield strength and elongation are 29.34MPa, 79.09MPa and 20.11% respectively.