Optimizing superplastic response in NAVALITE
Loading...
Authors
Chester, Alden P.
Subjects
Advisors
McNelley, T.R.
Date of Issue
1989-06
Date
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Superplastic ductilities up to 428 percent have been attained during research into
thermomechanical processing of Al-2.70Mg-2.04Li-0.50Cu-0.13Zr (compositions in
wt.pct.; alloy composition corresponding to NAVALITE). Variation in dislocation
density induced by means of warm rolling at a series of temperatures below the discontinuous
recrystallization temperature were expected to significantly affect the superplastic
response by further grain size refinement. Experimental results indicate no beneficial
enhancement in ductilities associated with rolling below 250 °C. Consistent elongations
in the 400 percent range during this initial evaluation of the NAVALITE alloy indicates
further investigation of superplastic response is warranted.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
61 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.