Inhomogeneous Deformation and Strain-Rate Effects in High Strength Trip Steels.
ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS
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AMMRC-TR-73-12DA-1-T-062105-A-528steel, deformation, strainmechanics, austenite, martensite, temperaturehigh strength alloys, steel, stress strain diagrams, trip steelsTensile true stress-strain curves were obtained on high strength TRIP steel for a range of strain rates and test temperatures. It was possible to determine the true-stress and -strain, and strain-rate during periods of Luders band formation, uniform elongation, and final necking. In service, where dynamic loading conditions exist, either the formation of a Luders band must be prevented, or the temperature sensitivity of the material must be decreased if the normal ductility of the material is to be realized. Methods for preventing the formation of a Luders band or reducing temperature sensitivity are discussed. Modified author abstract
- Metallurgy and Metallography