Low hydrogen pressure effect over microhardness and impact toughness of an experimental X-120 microalloyed steel
Por:
Del-Pozo, Adrian, Villalobos, Julio C., Bedolla-Jacuinde, Arnoldo, Vergara-Hernandez, Hector J., Vazquez-Gomez, Octavio, Campillo, Bernardo
Publicada:
1 jun 2023
Ahead of Print:
1 mar 2023
Resumen:
In the present work, the susceptibility to hydrogen embrittlement under
hydrogen pressure was evaluated for an experimental X-120 microalloyed
steel with four quenching treatments to determine the effect of hydrogen
on the hardness and toughness behaviour, for its use in gas and oil
transport. The steel was reheated at 820 degrees and 900 degrees C and
then quenched in four different cooling media. The microstructure
obtained by quenching in spray water showed a martensite-bainite type
microstructure, and the pressurized air condition showed a
micro-structure composed of bainite and acicular ferrite. In contrast, a
microstructure composed mainly of finer lath martensite-bainite and
acicular ferrite was obtained in the water-oil emulsion. In the oil
quenching condition, a microstructure consisting of banded martensite,
polygonal ferrite, and acicular ferrite was obtained. Suscepti-bility to
hydrogen embrittlement was determined by hydrogen gas pressure testing
at 1, 4, and 7 MPa. The results showed a clear trend where the steel
decreases its impact toughness due to the effect of hydrogen pressure,
with a maximum decrease of 29%, 24%, and 39%, respectively, for each
hydrogen pressure condition (1, 4, 7 MPa).
Filiaciones:
Del-Pozo, Adrian:
Universidad Michoacana de San Nicolás de Hidalgo, Avenida Francisco J. Mujica S/N, Ciudad Universitaria, Michoacán, Morelia, Mexico
Univ Michoacana, Ave Francisco J Mujica S-N, Morelia, Michoacan, Mexico
Villalobos, Julio C.:
Tecnológico Nacional de México/I.T. Morelia, Avenida Tecnológico No. 1500, Col. Lomas de Santiaguito, Michoacán, Morelia, Mexico
Tecnol Nacl Mexico IT Morelia, Ave Tecnol 1500, Morelia, Michoacan, Mexico
Bedolla-Jacuinde, Arnoldo:
Universidad Michoacana de San Nicolás de Hidalgo, Avenida Francisco J. Mujica S/N, Ciudad Universitaria, Michoacán, Morelia, Mexico
Univ Michoacana, Ave Francisco J Mujica S-N, Morelia, Michoacan, Mexico
Vergara-Hernandez, Hector J.:
Tecnológico Nacional de México/I.T. Morelia, Avenida Tecnológico No. 1500, Col. Lomas de Santiaguito, Michoacán, Morelia, Mexico
Tecnol Nacl Mexico IT Morelia, Ave Tecnol 1500, Morelia, Michoacan, Mexico
Vazquez-Gomez, Octavio:
Tecnológico Nacional de México/I.T. Morelia, Avenida Tecnológico No. 1500, Col. Lomas de Santiaguito, Michoacán, Morelia, Mexico
Tecnol Nacl Mexico IT Morelia, Ave Tecnol 1500, Morelia, Michoacan, Mexico
Campillo, Bernardo:
ICF, UNAM, Av. Universidad 1001, Col. Chamilpa, Morelos, Cuernavaca, Mexico
FQ, Circuito de la investigación científica S/N, Ciudad de México, Mexico
UNAM, ICF, Ave Univ 1001, Cuernavaca, Morelos, Mexico
FQ, Circuito Invest Cient S-N, Ciudad De Mexico, Mexico
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