TY - JOUR
T1 - Precipitation characterization and creep strength at 600°C for creep resistant Cr-Mo steel
AU - Saucedo-Muñoz, Maribel L.
AU - Komazaki, Shin Ichi
AU - Avila-Davila, Erika O.
AU - Lopez-Hirata, Victor M.
AU - Dorantes-Rosales, Hector J.
N1 - Publisher Copyright:
© 2020 ISIJ.
PY - 2020/9/15
Y1 - 2020/9/15
N2 - The creep strength of 5Cr-0.5Mo steel was determined at 600°C and 78-170 MPa, as well as its relation to the microstructural changes during the creep tests. The microstructural characterization showed that the creep tests were conducted under the presence of a mixture of both intergranular and intragranular M7C3 and M23C6 carbides dispersed in the ferrite matrix. The n exponent of Norton-Bailey law suggested that the creep deformation process occurred through the ferrite grains, which conducted to a transgranular ductile- fracture mode after creep testing. The creep strength of this steel is directly related to the average radius and number density of carbides present during the test. The ferrite grain size of 5 μm seemed to cause an enhancement of the creep strength for this steel in comparison to that of other similar steels reported in the literature.
AB - The creep strength of 5Cr-0.5Mo steel was determined at 600°C and 78-170 MPa, as well as its relation to the microstructural changes during the creep tests. The microstructural characterization showed that the creep tests were conducted under the presence of a mixture of both intergranular and intragranular M7C3 and M23C6 carbides dispersed in the ferrite matrix. The n exponent of Norton-Bailey law suggested that the creep deformation process occurred through the ferrite grains, which conducted to a transgranular ductile- fracture mode after creep testing. The creep strength of this steel is directly related to the average radius and number density of carbides present during the test. The ferrite grain size of 5 μm seemed to cause an enhancement of the creep strength for this steel in comparison to that of other similar steels reported in the literature.
KW - Carbide precipitation
KW - Cr-Mo steels
KW - Creep strength
KW - Low-alloy ferritic steels
KW - Microstructure evolution
UR - http://www.scopus.com/inward/record.url?scp=85092587603&partnerID=8YFLogxK
U2 - 10.2355/isijinternational.ISIJINT-2019-682
DO - 10.2355/isijinternational.ISIJINT-2019-682
M3 - Artículo
AN - SCOPUS:85092587603
SN - 0915-1559
VL - 60
SP - 2059
EP - 2067
JO - ISIJ International
JF - ISIJ International
IS - 9
ER -