TY - GEN
T1 - Topological analysis of martensite morphology in dual-phase steels
AU - Sato, N.
AU - Ojima, M.
AU - Morooka, S.
AU - Tomota, Y.
AU - Adachi, Y.
PY - 2012
Y1 - 2012
N2 - Martensite morphology such as connectivity or dispersivity in ferrite (F)/martensite (M) dual-phase (DP) steels was investigated from topological viewpoint to reveal the effect of the martensite morphology on the mechanical properties. Topological analysis permits evaluation of the microstructural connectivity and dispersivity by measuring the number of handles, independent bodies and genus, etc. The topological analysis was performed on three-dimensional (3D) reconstructed images of the microstructure with different connectivity, dispersivity, volume fraction and hardness of martensite in DP steels that were prepared by changing the intercritical annealing temperature. The connectivity and the volume fraction of martensite increased while the dispersivity and hardness of it decreased with increasing annealing temperature. The effect of connectivity and dispersivity as well as volume fraction and hardness, in particular, on work hardening behavior was individually evaluated at a given strain.
AB - Martensite morphology such as connectivity or dispersivity in ferrite (F)/martensite (M) dual-phase (DP) steels was investigated from topological viewpoint to reveal the effect of the martensite morphology on the mechanical properties. Topological analysis permits evaluation of the microstructural connectivity and dispersivity by measuring the number of handles, independent bodies and genus, etc. The topological analysis was performed on three-dimensional (3D) reconstructed images of the microstructure with different connectivity, dispersivity, volume fraction and hardness of martensite in DP steels that were prepared by changing the intercritical annealing temperature. The connectivity and the volume fraction of martensite increased while the dispersivity and hardness of it decreased with increasing annealing temperature. The effect of connectivity and dispersivity as well as volume fraction and hardness, in particular, on work hardening behavior was individually evaluated at a given strain.
KW - 3D-image based stereology
KW - Ferrite-martensite dual phase steel
KW - Martensite morphology
KW - Topology
UR - http://www.scopus.com/inward/record.url?scp=84855244080&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84855244080&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.409.725
DO - 10.4028/www.scientific.net/AMR.409.725
M3 - Conference contribution
AN - SCOPUS:84855244080
SN - 9783037853047
T3 - Advanced Materials Research
SP - 725
EP - 729
BT - THERMEC 2011 Supplement
PB - Trans Tech Publications Ltd
T2 - 7th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC'2011
Y2 - 1 August 2011 through 5 August 2011
ER -