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.
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January 1979
Research Papers
The Strain-Rate and Temperature Dependence of 18Ni(350) Maraging Steel Tensile Properties
H. J. Rack,
H. J. Rack
Sandia Laboratories, Albuquerque, N.M.
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S. Beitscher,
S. Beitscher
Rockwell Int.-Rocky Flats Div., Golden, Colo.
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David Kalish
David Kalish
Bell Telephone Labs., Norcross, Ga.
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H. J. Rack
Sandia Laboratories, Albuquerque, N.M.
S. Beitscher
Rockwell Int.-Rocky Flats Div., Golden, Colo.
David Kalish
Bell Telephone Labs., Norcross, Ga.
J. Eng. Mater. Technol. Jan 1979, 101(1): 91-97 (7 pages)
Published Online: January 1, 1979
Article history
Received:
June 20, 1978
Online:
August 17, 2010
Citation
Rack, H. J., Beitscher, S., and Kalish, D. (January 1, 1979). "The Strain-Rate and Temperature Dependence of 18Ni(350) Maraging Steel Tensile Properties." ASME. J. Eng. Mater. Technol. January 1979; 101(1): 91–97. https://doi.org/10.1115/1.3443657
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