I thought I knew how a brushless AC motor worked in that you spin a
magnetic armature inside a surrounding coiled-wire stator.

But I just took apart my 1.65 HP pool pump AO Smith QC1102 220V motor and
all I see are the two bearings holding up the armature in the center.
There are no brushes and the armature is a very heavy cylindrical chuck
of 'something'.

But, that something is not a magnet.
Nor does it appear to be a coil of wire (even if it were, there are no
brushes to get electricity to the 'field' if that is what it is).

So how does the darn thing work?

Googling for that motor I only see the same exploded diagrams that I see
physically when I take it apart.

What is the armature made up of?