A preliminary investigation of the corrosion and stress-corrosion susceptibility of thermomechanically processed high magnesium aluminum magnesium alloys
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Authors
Beberdick, Larry Edward
Subjects
Thermomechanically processed
High strength
Stress corrosion
Aluminum
Corrosion
Aluminum Magnesium
Marine
High strength
Stress corrosion
Aluminum
Corrosion
Aluminum Magnesium
Marine
Advisors
McNelley, Terry R.
Edwards, M.
Date of Issue
1981-09
Date
September 1981
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The stress corrosion cracking susceptibility and general corrosion characteristics of four thermomechanically processed high-Magnesium, Aluminum-Magnesium alloys were evaluated and compared to those of 7076-T6.
Results obtained from stress-corrosion testing and from tension testing after stress-corrosion exposure indicate that these 8-10% Mg alloys are less susceptible to stress corrosion cracking than 7076-T6. the addition of Cu or CU and Mn to a 10% Mg alloy raises strength, homogenizes the microstructure and reduces the tendency of such an alloy to exhibit intergranular cracking and exfoliation, especially in a sensitized condition. Results of accelerated general corrosion testing and marine exposure both indicate that binary 8% Mg and 10% Mg alloys are highly resistant to corrosion. Alloying with Cu or Cu and Mn accelerates weight loss, but to a lesser degree than observed for 7075-T6
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.