Why Ticonderoga plans moved away from aluminum

Did the Ticonderoga class have aluminum superstructures?

Some early designs did, but fire concerns drove a redesign, and the surviving ships were understood not to retain that arrangement.

Some early Ticonderoga designs used aluminum in the superstructure. Concern about the way aluminum structures behaved in shipboard fires then drove a redesign. The surviving ships were understood not to retain the proposed arrangement. Preliminary descriptions can remain in circulation after damage experience changes the ships that are actually built.