TY - JOUR
T1 - Formation of nanosized martensite particles in stainless steels
AU - Shimojo, M.
AU - Inamura, T.
AU - Myeong, T. H.
AU - Takashima, K.
AU - Higo, Y.
N1 - Funding Information:
This research was partly supported by the Kawasaki Steel 21st Century Foundation. The authors thank Dr. Fu-Gao Wei for some of the TEM observations.
PY - 2001/2
Y1 - 2001/2
N2 - Martensitic transformations occur in steels and other metals when the material is quenched or cooled. During the transformation, a metastable phase transforms in an autocatalytic way into a thermodynamically stable phase. Thus, it has been considered to be impossible to control the size of martensite in the order of nanometers. Here, we report the formation and dispersion of nanosized martensite in stainless steels by controlling the dislocation density and temperature. Electron microscopy revealed that martensite particles of approximately 5 nm in diameter were dispersed. Since both work hardening and precipitation hardening are effective in this material, this would be an additional, newly discovered strengthening mechanism for steels.
AB - Martensitic transformations occur in steels and other metals when the material is quenched or cooled. During the transformation, a metastable phase transforms in an autocatalytic way into a thermodynamically stable phase. Thus, it has been considered to be impossible to control the size of martensite in the order of nanometers. Here, we report the formation and dispersion of nanosized martensite in stainless steels by controlling the dislocation density and temperature. Electron microscopy revealed that martensite particles of approximately 5 nm in diameter were dispersed. Since both work hardening and precipitation hardening are effective in this material, this would be an additional, newly discovered strengthening mechanism for steels.
UR - http://www.scopus.com/inward/record.url?scp=0035247662&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035247662&partnerID=8YFLogxK
U2 - 10.1007/s11661-001-0257-9
DO - 10.1007/s11661-001-0257-9
M3 - Article
AN - SCOPUS:0035247662
VL - 32
SP - 261
EP - 265
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
SN - 1073-5623
IS - 2
ER -