Publication:
Mechanical characteristics of a superplastic aluminum-10.2%Mg-0.1%Zr alloy.

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Authors
Hartmann, Thomas S.
Subjects
superplasticity
aluminum
aluminum-magnesium alloys
thermomechanical processing
annealing
recrystallization
creep models
activation energy
strain rate sensitivity coefficient
Advisors
McNelley, T.R.
Date of Issue
1985-06
Date
June 1985
Publisher
Language
en_US
Abstract
The elevated temperature mechanical characteristics of an aluminum-magnesium-zirconium alloy were studied. Thermomechanical processing consisted of solution treating and hot working at 440°C and then warm rolling at 300°C to 94% reduction. Subsequent treatments included annealing at 200°C for one hour, and recrystallizing for one minute at 440°C. Tensile testing of warm rolled, annealed, and recrystallized material was conducted at various strain rates and temperatures. The data was analyzed to determine strain-rate sensitivity coefficients and activation energies, in turn to be correlated with microstructural data concurrently obtained on this superplastic alloy. This material exhibits particularly good ambient properties in addition to the superplasticity.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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