SEARCH · Search NASA
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
A laboratory test method that is only mildly corrosive to aluminum and discriminating for use in classifying the stress corrosion cracking resistance of aluminum alloys is presented along with the method used in evaluating the media selected for testing. The proposed medium is easier to prepare and less expensive than substitute ocean water.
Topcoat of epoxy-polyamide paint is effective protection for aluminum alloys against stress corrosion cracking. The paint can be used on unprimed surfaces.
Accelerated stress corrosion test for aluminum alloys
Aluminum concentration effects on stress corrosion cracking of titanium alloys at ambient temperatures in aqueous solutions of salt
Solution of hydrogen flouride, hydrogen peroxide, and water reveals hot salt stress corrosion cracks in various titanium alloys. After the surface is rinsed in water, dried, and swabbed with the solution, it can be observed by the naked eye or at low magnification.
Crack initiation phenomena associated with stress corrosion in high strength aluminum alloys
Stress corrosion cracking of titanium alloys at ambient temperature in aqueous solutions
Hot-salt stress-corrosion of titanium alloy under simulated turbine engine compressor environment
Grain morphology and preferred orientation effects on direction and propagation of stress corrosion cracking of aluminum alloy plate
Stress corrosion cracking of titanium alloys and chloride absorption during formation of titanium oxide
Stress corrosion cracking tests of titanium alloys at ambient temperature in aqueous solutions
Stress corrosion of aluminum alloys and development of techniques for its detection
Stress corrosion of aluminum alloys and techniques for its detection
Stress corrosion mechanism in aluminum alloys and development of detection techniques
Hydrogen embrittlement of titanium as related to stress corrosion cracking
The use of aluminum-lithium alloys for aerospace applications is currently being studied at NASA Langley Research Center's Metallic Materials Branch. The alloys in question will operate under stress in a corrosive environment. These conditions are ideal for the phenomena of Stress-Corrosion Cracking (SCC) to occur. The test procedure for SCC calls for alternate immersion and breaking load tests. These tests were optimized for the lab equipment and materials available in the Light Alloy lab. Al-Li alloy ML377 specimens were then subjected to alternate immersion and breaking load tests to determine residual strength and resistance to SCC. Corrosion morphology and microstructure were examined under magnification. Data shows that ML377 is highly resistant to stress-corrosion cracking.
Hot salt stress corrosion cracking effects on tensile properties of titanium alloy sheets
Stress corrosion cracking of high strength aluminum alloys investigated by electrochemical, mechanical, and electron microscopic techniques