Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing Lines
In the present work, a Cr+Mo+Si low-alloyed low-carbon steel was fabricated at laboratory scale and processed to produce multiphase advanced high-strength steels (AHSS), under thermal cycles similar to those used in a continuous annealing and galvanizing process. Cold-rolled steel samples with a mic...
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MDPI AG
2022-10-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/12/11/1818 |
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| author | Emmanuel Gutiérrez-Castañeda Carlos Galicia-Ruiz Lorena Hernández-Hernández Alberto Torres-Castillo Dirk Frederik De Lange Armando Salinas-Rodríguez Rogelio Deaquino-Lara Rocío Saldaña-Garcés Arnoldo Bedolla-Jacuinde Iván Reyes-Domínguez Javier Aguilar-Carrillo |
| author_facet | Emmanuel Gutiérrez-Castañeda Carlos Galicia-Ruiz Lorena Hernández-Hernández Alberto Torres-Castillo Dirk Frederik De Lange Armando Salinas-Rodríguez Rogelio Deaquino-Lara Rocío Saldaña-Garcés Arnoldo Bedolla-Jacuinde Iván Reyes-Domínguez Javier Aguilar-Carrillo |
| author_sort | Emmanuel Gutiérrez-Castañeda |
| collection | DOAJ |
| description | In the present work, a Cr+Mo+Si low-alloyed low-carbon steel was fabricated at laboratory scale and processed to produce multiphase advanced high-strength steels (AHSS), under thermal cycles similar to those used in a continuous annealing and galvanizing process. Cold-rolled steel samples with a microstructure constituted of pearlite, bainite, and martensite in a matrix ferrite, were subjected to an intercritical annealing (817.5 °C, 15 s) and further isothermal bainitic treatment (IBT) to investigate the effects of time (30 s, 60 s, and 120 s) and temperature (425 °C, 450 °C, and 475 °C) on the resulting microstructure and mechanical properties. Results of an in situ phase transformation analysis show that annealing in the two-phase region leads to a microstructure of ferrite + austenite; the latter transforms, on cooling to IBT, to pro-eutectoid ferrite and bainite, and the austenite-to-bainite transformation advanced during IBT holding. On final cooling to room temperature, austenite transforms to martensite, but a small amount is also retained in the microstructure. Samples with the lowest temperature and largest IBT time resulted in the highest ultimate tensile strength/ductility ratio (1230.6 MPa-16.0%), which allows to classify the steel within the third generation of AHSS. The results were related to the presence of retained austenite with appropriate stability against mechanically induced martensitic transformation. |
| first_indexed | 2024-03-09T18:50:46Z |
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| id | doaj.art-489e7ef3ff5c46d4af0c320576a11d88 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T18:50:46Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-489e7ef3ff5c46d4af0c320576a11d882023-11-24T05:51:37ZengMDPI AGMetals2075-47012022-10-011211181810.3390/met12111818Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing LinesEmmanuel Gutiérrez-Castañeda0Carlos Galicia-Ruiz1Lorena Hernández-Hernández2Alberto Torres-Castillo3Dirk Frederik De Lange4Armando Salinas-Rodríguez5Rogelio Deaquino-Lara6Rocío Saldaña-Garcés7Arnoldo Bedolla-Jacuinde8Iván Reyes-Domínguez9Javier Aguilar-Carrillo10Consejo Nacional de Ciencia y Tecnología, Catedrático CONACYT, Avenida Insurgentes Sur 1582, Crédito Constructor, Ciudad de México 03940, MexicoInstituto de Metalurgia, Ingeniería de Materiales, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, MexicoInstituto de Metalurgia, Ingeniería de Materiales, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, MexicoInstituto de Metalurgia, Ingeniería de Materiales, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, MexicoInstituto de Metalurgia, Ingeniería de Materiales, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, MexicoCentro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, CINVESTAV, Av. Industria Metalúrgica 1062, Parque Industrial Ramos Arizpe-Saltillo, Ramos Arizpe 25000, MexicoCentro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, CINVESTAV, Av. Industria Metalúrgica 1062, Parque Industrial Ramos Arizpe-Saltillo, Ramos Arizpe 25000, MexicoConsejo Nacional de Ciencia y Tecnología, Catedrático CONACYT, Avenida Insurgentes Sur 1582, Crédito Constructor, Ciudad de México 03940, MexicoEdificio “U” Ciudad Universitaria, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58060, MexicoConsejo Nacional de Ciencia y Tecnología, Catedrático CONACYT, Avenida Insurgentes Sur 1582, Crédito Constructor, Ciudad de México 03940, MexicoConsejo Nacional de Ciencia y Tecnología, Catedrático CONACYT, Avenida Insurgentes Sur 1582, Crédito Constructor, Ciudad de México 03940, MexicoIn the present work, a Cr+Mo+Si low-alloyed low-carbon steel was fabricated at laboratory scale and processed to produce multiphase advanced high-strength steels (AHSS), under thermal cycles similar to those used in a continuous annealing and galvanizing process. Cold-rolled steel samples with a microstructure constituted of pearlite, bainite, and martensite in a matrix ferrite, were subjected to an intercritical annealing (817.5 °C, 15 s) and further isothermal bainitic treatment (IBT) to investigate the effects of time (30 s, 60 s, and 120 s) and temperature (425 °C, 450 °C, and 475 °C) on the resulting microstructure and mechanical properties. Results of an in situ phase transformation analysis show that annealing in the two-phase region leads to a microstructure of ferrite + austenite; the latter transforms, on cooling to IBT, to pro-eutectoid ferrite and bainite, and the austenite-to-bainite transformation advanced during IBT holding. On final cooling to room temperature, austenite transforms to martensite, but a small amount is also retained in the microstructure. Samples with the lowest temperature and largest IBT time resulted in the highest ultimate tensile strength/ductility ratio (1230.6 MPa-16.0%), which allows to classify the steel within the third generation of AHSS. The results were related to the presence of retained austenite with appropriate stability against mechanically induced martensitic transformation.https://www.mdpi.com/2075-4701/12/11/1818multiphase steelsin-situ phase transformationsIQ-EBSDmechanical propertiesisothermal bainitic treatmentAHSS |
| spellingShingle | Emmanuel Gutiérrez-Castañeda Carlos Galicia-Ruiz Lorena Hernández-Hernández Alberto Torres-Castillo Dirk Frederik De Lange Armando Salinas-Rodríguez Rogelio Deaquino-Lara Rocío Saldaña-Garcés Arnoldo Bedolla-Jacuinde Iván Reyes-Domínguez Javier Aguilar-Carrillo Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing Lines Metals multiphase steels in-situ phase transformations IQ-EBSD mechanical properties isothermal bainitic treatment AHSS |
| title | Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing Lines |
| title_full | Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing Lines |
| title_fullStr | Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing Lines |
| title_full_unstemmed | Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing Lines |
| title_short | Development of Low-Alloyed Low-Carbon Multiphase Steels under Conditions Similar to Those Used in Continuous Annealing and Galvanizing Lines |
| title_sort | development of low alloyed low carbon multiphase steels under conditions similar to those used in continuous annealing and galvanizing lines |
| topic | multiphase steels in-situ phase transformations IQ-EBSD mechanical properties isothermal bainitic treatment AHSS |
| url | https://www.mdpi.com/2075-4701/12/11/1818 |
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