title: Effect of microstructure on the dimensional stability of cast aluminum mirror substrates.
abstract: The dimensional stability of directionally cast grain microstructures was compared with that of normal randomly oriented grain microstructures in aluminum alloys. In general, directionally solidified aluminum mirror substrates exhibited superior dimensional stability as compared with castings exhibiting normal random microstructures. These cast aluminum alloys.
authors.forename: E
authors.initials: E
authors.lastname: Benn
authors.forename: W W
authors.initials: WW
authors.lastname: Walker