Heat treat Al 6082-T6 post EB weld
Heat treat Al 6082-T6 post EB weld
(OP)
Hi,
I am fabricating a large thin walled item from Al 6082 T6.
Due to the likelihood of distortion during welding, I have opted for EB welding to keep the HAZ as small as possible.
My question is do I need to stress relieve post welding? Obviously, the weld won't be in the T6. I don't want to solution treat as I have a machined surface.
Cheers
I am fabricating a large thin walled item from Al 6082 T6.
Due to the likelihood of distortion during welding, I have opted for EB welding to keep the HAZ as small as possible.
My question is do I need to stress relieve post welding? Obviously, the weld won't be in the T6. I don't want to solution treat as I have a machined surface.
Cheers





RE: Heat treat Al 6082-T6 post EB weld
BK
RE: Heat treat Al 6082-T6 post EB weld
The wall thickness is 4mm and the diameter is 400mm.
I ended up getting some representative test pieces made up and measuring the hardness using micro indentor. The results indictated the condition of the weld bead/HAZ had dropped to T4/T5.
I subsequently heat treated at 150°C for 3 hours, which recovered the strength to near T6. I was keen to stay below 200°C to avoid any recrystalisation deformations.