Quantitative characterization of ultrafine grained 12GBA steel with scanning tunnel microscopy

Abstract

Coarse grained 12GBA steel was machined by multiaxial isothermal forging and warm rolling. Quantitative characteristics of steel structure were studied with scanning tunnel microscopy. Deformation processing was found to lead to ultrafine-grained structure formation, lamellar cementite fragmentation and its further spheroidization. Relative energies of individual ferrite/pearlite and intraphase pearlite boundaries were estimated by grain boundary dihedral angle measurement. It was revealed that ferrite/pearlite boundary energy is 1.5-2 times higher than the energy of intraphase pearlite boundary. Cumulative distribution functions for internal interfaces energy showed the decrease in relative energy after deformation processing as compared to coarse grained state. Obtained results were explained by an increase of low-angle boundary fraction and non equilibrium grain boundary segregation.

Original language	English
Title of host publication	Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
Subtitle of host publication	Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
Publisher	American Institute of Physics Inc.
Volume	1783
ISBN (Electronic)	9780735414457
DOIs	https://doi.org/10.1063/1.4966420
Publication status	Published - 10 Nov 2016
Event	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 - Tomsk, Russian Federation Duration: 19 Sep 2016 → 23 Sep 2016

Conference

Conference	International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
Country	Russian Federation
City	Tomsk
Period	19.9.16 → 23.9.16

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1063/1.4966420

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Kuznetsov, P., Rakhmatulina, T., Panin, V., & Shumakova, D. (2016). Quantitative characterization of ultrafine grained 12GBA steel with scanning tunnel microscopy. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 (Vol. 1783). [020127] American Institute of Physics Inc.. https://doi.org/10.1063/1.4966420

Quantitative characterization of ultrafine grained 12GBA steel with scanning tunnel microscopy. / Kuznetsov, Pavel; Rakhmatulina, Tanzilya; Panin, Victor; Shumakova, Dariya.

Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016. 020127.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Kuznetsov, P, Rakhmatulina, T, Panin, V & Shumakova, D 2016, Quantitative characterization of ultrafine grained 12GBA steel with scanning tunnel microscopy. in Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. vol. 1783, 020127, American Institute of Physics Inc., International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016, Tomsk, Russian Federation, 19.9.16. https://doi.org/10.1063/1.4966420

Kuznetsov P, Rakhmatulina T, Panin V, Shumakova D. Quantitative characterization of ultrafine grained 12GBA steel with scanning tunnel microscopy. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783. American Institute of Physics Inc. 2016. 020127 https://doi.org/10.1063/1.4966420

Kuznetsov, Pavel ; Rakhmatulina, Tanzilya ; Panin, Victor ; Shumakova, Dariya. / Quantitative characterization of ultrafine grained 12GBA steel with scanning tunnel microscopy. Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016.

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abstract = "Coarse grained 12GBA steel was machined by multiaxial isothermal forging and warm rolling. Quantitative characteristics of steel structure were studied with scanning tunnel microscopy. Deformation processing was found to lead to ultrafine-grained structure formation, lamellar cementite fragmentation and its further spheroidization. Relative energies of individual ferrite/pearlite and intraphase pearlite boundaries were estimated by grain boundary dihedral angle measurement. It was revealed that ferrite/pearlite boundary energy is 1.5-2 times higher than the energy of intraphase pearlite boundary. Cumulative distribution functions for internal interfaces energy showed the decrease in relative energy after deformation processing as compared to coarse grained state. Obtained results were explained by an increase of low-angle boundary fraction and non equilibrium grain boundary segregation.",

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AB - Coarse grained 12GBA steel was machined by multiaxial isothermal forging and warm rolling. Quantitative characteristics of steel structure were studied with scanning tunnel microscopy. Deformation processing was found to lead to ultrafine-grained structure formation, lamellar cementite fragmentation and its further spheroidization. Relative energies of individual ferrite/pearlite and intraphase pearlite boundaries were estimated by grain boundary dihedral angle measurement. It was revealed that ferrite/pearlite boundary energy is 1.5-2 times higher than the energy of intraphase pearlite boundary. Cumulative distribution functions for internal interfaces energy showed the decrease in relative energy after deformation processing as compared to coarse grained state. Obtained results were explained by an increase of low-angle boundary fraction and non equilibrium grain boundary segregation.

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