Article ID Journal Published Year Pages File Type
5455662 Materials Science and Engineering: A 2017 7 Pages PDF
Abstract
Chromium (Cr)/nitrogen (N) alloying can enhance the yield strength of high-manganese (Mn) steels. This work investigated the mechanical properties of a high-Mn twin-induced plastic (TWIP) steel with 6.3% Cr and 0.2% N by tensile testing in an ambient atmosphere and impact testing at -196 °C. The yield strength of the high-Mn steel was improved significantly with Cr/N alloying and an excellent low-temperature toughness was maintained. Solid-solution strengthening resulting from dissolved nitrogen was the most effective strength mechanism to increase the yield strength of the steel compared with grain-boundary and precipitation strengthening, which result from the precipitation of aluminum nitride. Grain-boundary and precipitation strengthening result from the precipitation of aluminum nitride. Because of its excellent mechanical properties, high-Mn steel that is produced by Cr/N alloying can be used to manufacture storage tanks for liquefied natural gas.
Related Topics
Physical Sciences and Engineering Materials Science Materials Science (General)
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