Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5455662 | Materials Science and Engineering: A | 2017 | 7 Pages |
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)
Authors
X.J. Wang, X.J. Sun, C. Song, H. Chen, W. Han, F. Pan,