TY - GEN
T1 - Effect of cooling rate after high temperature nitriding on transformation microstructure in low carbon steel
AU - Tsukiyama, Kuniaki
AU - Nakada, Nobuo
AU - Tsuchiyma, Toshihiro
AU - Takaki, Setsuo
AU - Tomota, Yo
PY - 2014/1/1
Y1 - 2014/1/1
N2 - High temperature nitriding was applied to a low carbon steel, and then the transformation microstructure formed from the high nitrogen austenite was observed. The microstructure was greatly influenced by cooling rate after the nitriding. The austenite transformed to martensite when the cooling rate was fast (water-cooling) though a certain amount of austenite was retained in the martensite. On the other hand, a diffusional transformation product such as (ferrite + Fe4N) eutectoid structure was formed when the cooling rate was slow (gas- or furnace-cooling). The hardness profile obtained in these specimen were related with microstructure depending on the nitrogen concentration profile and cooling rate.
AB - High temperature nitriding was applied to a low carbon steel, and then the transformation microstructure formed from the high nitrogen austenite was observed. The microstructure was greatly influenced by cooling rate after the nitriding. The austenite transformed to martensite when the cooling rate was fast (water-cooling) though a certain amount of austenite was retained in the martensite. On the other hand, a diffusional transformation product such as (ferrite + Fe4N) eutectoid structure was formed when the cooling rate was slow (gas- or furnace-cooling). The hardness profile obtained in these specimen were related with microstructure depending on the nitrogen concentration profile and cooling rate.
UR - http://www.scopus.com/inward/record.url?scp=84901501096&partnerID=8YFLogxK
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U2 - 10.4028/www.scientific.net/AMR.922.773
DO - 10.4028/www.scientific.net/AMR.922.773
M3 - Conference contribution
AN - SCOPUS:84901501096
SN - 9783038350743
T3 - Advanced Materials Research
SP - 773
EP - 778
BT - THERMEC 2013 Supplement
PB - Trans Tech Publications
T2 - 8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013
Y2 - 2 December 2013 through 6 December 2013
ER -