TY - GEN
T1 - Precipitation Process During Isothermal Aging of an Austenitic Stainless Fe-12Cr-10Mn-12Ni-5Mo-0.24 N-0.03C Steel and Its Effect on the Mechanical Properties
AU - Saucedo-Muñoz, Maribel L.
AU - Lopez-Hirata, Victor M.
AU - Avila-Davila, Erika O.
AU - Hernandez-Santiago, Felipe
AU - Villegas-Cardenas, Jose D.
N1 - Publisher Copyright:
© 2022, The Minerals, Metals & Materials Society.
PY - 2022
Y1 - 2022
N2 - The precipitation process was studied during the isothermal aging of a Fe-12Cr-10Mn-12Ni-5Mo-0.24 N-0.03C steel at temperatures of 700, 800, and 900 °C for times up to 1000 min. The aged specimens were characterized by SEM, XRD analysis, and CVN impact test at –196 °C. Thermo-Calc analysis indicated that the Mo-rich M6C carbide precedes the precipitation of Cr-rich M2N nitrides in the austenite matrix at aging temperatures lower than 700 °C. The fastest growth kinetics of intragranular takes place at about 800 °C for the M6C carbide and 850 °C for the M2N nitride. The CVN impact energy decreases with aging time and temperature. The presence of brittle fracture also increases with aging time and temperature in the tested specimens. The intergranular precipitation was the main responsible for the reduction of cryogenic toughness.
AB - The precipitation process was studied during the isothermal aging of a Fe-12Cr-10Mn-12Ni-5Mo-0.24 N-0.03C steel at temperatures of 700, 800, and 900 °C for times up to 1000 min. The aged specimens were characterized by SEM, XRD analysis, and CVN impact test at –196 °C. Thermo-Calc analysis indicated that the Mo-rich M6C carbide precedes the precipitation of Cr-rich M2N nitrides in the austenite matrix at aging temperatures lower than 700 °C. The fastest growth kinetics of intragranular takes place at about 800 °C for the M6C carbide and 850 °C for the M2N nitride. The CVN impact energy decreases with aging time and temperature. The presence of brittle fracture also increases with aging time and temperature in the tested specimens. The intergranular precipitation was the main responsible for the reduction of cryogenic toughness.
KW - Aging
KW - Austenitic stainless steels
KW - Cryogenic toughness
KW - Precipitation
UR - http://www.scopus.com/inward/record.url?scp=85125225184&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-92381-5_138
DO - 10.1007/978-3-030-92381-5_138
M3 - Contribución a la conferencia
AN - SCOPUS:85125225184
SN - 9783030923808
T3 - Minerals, Metals and Materials Series
SP - 1451
EP - 1460
BT - TMS 2022 151st Annual Meeting and Exhibition Supplemental Proceedings
PB - Springer Science and Business Media Deutschland GmbH
T2 - 151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022
Y2 - 27 February 2022 through 3 March 2022
ER -