TY - JOUR
T1 - LOW-TEMPERATURE TOUGHNESS OF 6%Mn STEELS.
AU - Murakami, Masato
AU - Shibata, Koji
AU - Fujita, Toshio
PY - 1986
Y1 - 1986
N2 - Fe-Mn alloys have microstructures similar to those of Fe-Ni alloys in iron-rich regions; therefore they have potentials as structural materials at cryogenic temperatures. Fe-Mn alloys, however, lose their toughness by catastrophic intergranular failure when tested at low temperatures. This is attributed to the segregation of impurities to grain boundaries. The segregation can take place at higher temperatures than 600 degree C, in both austenite( gamma ) and two-phase( alpha plus gamma ) regions. An addition of molybdenum has been found to be effective in reducing the segregation of phosphorus in the two-phase region and enhancing toughness. However, no perceivable difference was observed in segregation in the gamma field. Double temper has been also identified as a beneficial treatment for improving toughness, which promoted the reversion of austenite along grain boundaries and reduced the susceptibility to intergranular failure.
AB - Fe-Mn alloys have microstructures similar to those of Fe-Ni alloys in iron-rich regions; therefore they have potentials as structural materials at cryogenic temperatures. Fe-Mn alloys, however, lose their toughness by catastrophic intergranular failure when tested at low temperatures. This is attributed to the segregation of impurities to grain boundaries. The segregation can take place at higher temperatures than 600 degree C, in both austenite( gamma ) and two-phase( alpha plus gamma ) regions. An addition of molybdenum has been found to be effective in reducing the segregation of phosphorus in the two-phase region and enhancing toughness. However, no perceivable difference was observed in segregation in the gamma field. Double temper has been also identified as a beneficial treatment for improving toughness, which promoted the reversion of austenite along grain boundaries and reduced the susceptibility to intergranular failure.
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U2 - 10.2355/tetsutohagane1955.72.2_241
DO - 10.2355/tetsutohagane1955.72.2_241
M3 - Article
AN - SCOPUS:0022662690
VL - 72
SP - 241
EP - 248
JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
SN - 0021-1575
IS - 2
ER -