+Advanced Search
Effect of Warm Rolling on Microstructure and Mechanical Properties of 6061 Aluminum Alloy Cast-Rolled Sheet
Author:
Affiliation:

1.School of Materials Science and Metallurgy,University of Science and Technology Liaoning,No ,Qianshan Middle Road,Lishan District;2.School of Mechanical Engineering and Automation,University of Science and Technology Liaoning,No ,Qianshan Middle Road,Lishan District

Clc Number:

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials
  • |
  • Comments
    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.

    Reference
    Related
    Cited by
Get Citation

[Zhen Xu, Wei Zhang, Hongbin Wang, Xinyu Zhang, Hua Song, Shengli Li, Can Wu, Yingyu Huo, 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.]
DOI:10.12442/j. issn.1002-185X.20191011

Copy
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
History
  • Received:November 29,2019
  • Revised:May 11,2020
  • Adopted:May 18,2020
  • Online: December 09,2020
  • Published: