TY - GEN
T1 - Formation of ultra fine grained structure during annealing of heavily drawn metastable austenitic steel wire
AU - Fukumaru, T.
AU - Inoue, T.
AU - Tsuchiyama, T.
AU - Takaki, S.
PY - 2007/1/1
Y1 - 2007/1/1
N2 - It is well known that the ultra grain refinement can be achieved by sever cold rolling, followed by reversion treatment in metastable austenitic stainless steel plate. In this study, the cold rolling was replaced by cold drawing. This procedure was applied to a metastable austenitic steel (Fe-16Cr-10Ni alloy) thin wire, and then the microstructure development during cold drawing and annealing was investigated. The austenite phase transformed to martensite during the drawing. Vickers hardness of the wire markedly increased with increasing the drawing strain. When the drawing strain reached about 4,5, the wire exhibited martensite single structure and had high hardness of Hv4.4GPa, Annealing of the heavily drawn wire at around 900K for 0.6ks leads to the formation of reversed austenite with the diffusional reversion mechanism, As a result, ultra fine-grained austenitic single structure with the grain size of about 0.6μm was obtained, It was also found that the wire has an excellent combination of a strength and ductility.
AB - It is well known that the ultra grain refinement can be achieved by sever cold rolling, followed by reversion treatment in metastable austenitic stainless steel plate. In this study, the cold rolling was replaced by cold drawing. This procedure was applied to a metastable austenitic steel (Fe-16Cr-10Ni alloy) thin wire, and then the microstructure development during cold drawing and annealing was investigated. The austenite phase transformed to martensite during the drawing. Vickers hardness of the wire markedly increased with increasing the drawing strain. When the drawing strain reached about 4,5, the wire exhibited martensite single structure and had high hardness of Hv4.4GPa, Annealing of the heavily drawn wire at around 900K for 0.6ks leads to the formation of reversed austenite with the diffusional reversion mechanism, As a result, ultra fine-grained austenitic single structure with the grain size of about 0.6μm was obtained, It was also found that the wire has an excellent combination of a strength and ductility.
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U2 - 10.4028/0-87849-443-x.1309
DO - 10.4028/0-87849-443-x.1309
M3 - Conference contribution
AN - SCOPUS:38349104322
SN - 087849443X
SN - 9780878494439
T3 - Materials Science Forum
SP - 1309
EP - 1312
BT - Recrystallization and Grain Growth III - Proceedings of the Third International Conference on Recrystallization and Grain Growth, ReX and GG III
PB - Trans Tech Publications Ltd
T2 - 3rd International Conference on Recrystallization and Grain Growth, ReX GG III
Y2 - 10 June 2007 through 15 June 2007
ER -