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 findings are discussed in terms of the fundamental metallurgy of cast aluminum alloys.

© 1973 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Substrate temperature and strain during sputter deposition of aluminum on cast borosilicate glass in a Gemini Observatory coating chamber

Jacques Sebag, John Andrew, Douglas Neill, and Michael Warner
Appl. Opt. 49(24) 4610-4620 (2010)

Large Aperture Aluminum Alloy Telescope Mirrors

Fred F. Forbes
Appl. Opt. 7(7) 1407-1408 (1968)

A 40-cm Welded-Segment Lightweight Aluminum Alloy Telescope Mirror

Fred F. Forbes
Appl. Opt. 8(7) 1361-1363 (1969)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription