The Strain-Rate and Temperature Dependence of 18Ni(350) Maraging Steel Tensile Properties

Autor:	David Kalish, H. J. Rack, S. Beitscher
Rok vydání:	1979
Předmět:	Austenite Materials science Mechanical Engineering Metallurgy engineering.material Strain rate Condensed Matter Physics Microstructure Mechanics of Materials Ultimate tensile strength engineering Substructure General Materials Science Dislocation Ductility Maraging steel
Zdroj:	Journal of Engineering Materials and Technology. 101:91-97
ISSN:	1528-8889 0094-4289
DOI:	10.1115/1.3443657
Popis:	The influence of microstructure, strain rate, and test temperature on the tensile properties of 18Ni(350) maraging steel was examined. The strain-rate and temperature dependence of the yield strength is less than that observed in low-strength carbon steels. The results suggest that the thermally activated flow process involves both the by-passing of a linear barrier, i.e., the disruption associated with a dislocation core, and the by-passing of a localized obstacle, the latter being specific to the microstructure being examined. The tensile ductility of aged 18Ni(350) maraging steel also undergoes a ductile-brittle transition. The extent of this ductility loss depends upon the matrix solute content and the presence of either reverted austenite or a highly dislocated substructure.
Databáze:	OpenAIRE
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