[P] P106~P129 Structural Materials

[P125] Microstructuralobservations of the aging treatment of Al-7%Si-0.3%Mg alloy slowly cooled to 473K

○Motoki Abe¹, Taiki Tsuchiya¹, Seungwon Lee¹, Abrar Ahmed², Susumu Ikeno¹, Kenji Matsuda¹ (1. University of Toyama, 2. University of Toyama Advanced Aluminum International Research Center)

Keywords:

aluminum alloy,aging treatment,microstructural observations,Scanning Electron Microscope,Transmission Electron Microscope

Maximum hardness of an Al‑7%Si‑0.3%Mg alloy aged immediately after casting shows variations in precipitate types depending on the matrix location, but their detailed distribution is unclear. This study examines specimens slowly cooled to 473 K and then aged to clarify solute element segregation based on precipitate distribution.