I know that aluminium can be glued, used epoxy, with very good results.
Forty years ago, an aircraft company in the Netherlands, Fokker, was
already using epoxy glued joints in their aircraft.

I had a plane with a lot of glue bonds in it (Grumman) and put over 500 hrs on
it with no problems. they had a glued honeycomb type side pannel that was very
tough as well as wing covers. No idea what adhesive they used but it was way
back when.
Greg Sefton