The roles of strain and reheating interval in continuous recrystallization during the thermomechanical processing by warm rolling of an Al-Mg alloy
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Authors
Gorsuch, Thomas E.
Subjects
Superplasticity
Aluminum-Magnesium alloys
Continuous recrystallization
Aluminum-Magnesium alloys
Continuous recrystallization
Advisors
McNelley, T.R.
Date of Issue
1989-12
Date
December 1989
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Investigation into the influence of rolling strain and into the variation of properties and structure during reheating intervals between rolling passes in the thermomechanical processing of
an Al-9.89Mg-0.09Zr alloy (composition in weight percent) was conducted. Superplastic ductilities up to approximately 1120 percent were achieved by processing to a total strain of 2.5 utilizing a reheating interval of 30 minutes. Conversely, rolling to lesser values of strain with the same reheating interval or rolling to a strain of 2.5 and using a 5 minute reheating interval produced ductilities less than 400 percent. A strong correlation was demonstrated between results achieved and a qualitative model for continuous recrystallization during thermomechanical processing previously proposed.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
70 p.
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.