Twinning and stacking fault-induced precipitation in an aluminum alloy

The precipitation process in Al alloys has been an attractive phenomenon for engineering alloys. In this study, the Al 6082 alloys processed via forging, followed by a heat treatment procedure consisting of solution treatment at 530 °C for 3 h, and an aging process at 175 °C for 8 h. Detailed precipitation investigations have been conducted using high-resolution TEM. The results show that the Al, Mn, and Si elements segregate to form precipitates with complex crystal structures at different locations such as triple junctions. Also, two major scenarios for determining precipitation formation during heat treatment are proposed. The single atom jump along the interface between the precipitate and the matrix is…

• TM
  Taizhou Municipal Science and Technology Bureau
• NC
  National College Students Innovation and Entrepreneurship Training Program

  Awards: 202310350064, 202110350030