Microstructural evolution during ultrafast heat treament of medium carbon steels

S. Papaefthymiou; C. Goulas; F. Castro Cerda; J. Sietsma; R. Petrov

Microstructural evolution during ultrafast heat treament of medium carbon steels

S. Papaefthymiou, C. Goulas, F. Castro Cerda, J. Sietsma, R. Petrov

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

Abstract

The initial microstructure, its local composition and phase morphology determines the final microstructure in ultra fast heat treatment processes (UFHT). In the present study, we designed and performed, via dilatometry, UFHT processes involving heating rates higher than 250°C/s, peak austenitization and helium quenching. This UFHT leads to a carbon gradient within the austenite, as confirmed by thermodynamic and diffusion calculations. With microscopic techniques we shed light on the microstructure evolution of steels with different compositions and initial microstructures. The most commonly achieved microstructure from UFHT in medium-carbon-steels is a mixture of fine bainite and martensite. Partially dissolved cementite, carbides and other microstructural features could be identified as similar to the original, even after UFHT.

Original language	English
Title of host publication	PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Editors	Long-Qing Chen, Matthias Militzer, Gianluigi Botton, James Howe, Chadwick Sinclair, Hatem Zurob
Publisher	International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015
Pages	569-570
Number of pages	2
ISBN (Electronic)	9780692437360
Publication status	Published - 2015
Externally published	Yes
Event	International Conference on Solid-Solid Phase Transformations in Inorganic Materials, PTM 2015 - Whistler, Canada Duration: 28 Jun 2015 → 3 Jul 2015

Conference

Conference	International Conference on Solid-Solid Phase Transformations in Inorganic Materials, PTM 2015
Abbreviated title	PTM 2015
Country/Territory	Canada
City	Whistler
Period	28/06/15 → 3/07/15

Keywords

Diffusion
Martensite
Ultra fast heat treatment

Cite this

Papaefthymiou, S., Goulas, C., Cerda, F. C., Sietsma, J., & Petrov, R. (2015). Microstructural evolution during ultrafast heat treament of medium carbon steels. In L.-Q. Chen, M. Militzer, G. Botton, J. Howe, C. Sinclair, & H. Zurob (Eds.), PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015 (pp. 569-570). International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015.

Papaefthymiou, S. ; Goulas, C. ; Cerda, F. Castro et al. / Microstructural evolution during ultrafast heat treament of medium carbon steels. PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015. editor / Long-Qing Chen ; Matthias Militzer ; Gianluigi Botton ; James Howe ; Chadwick Sinclair ; Hatem Zurob. International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, 2015. pp. 569-570

@inproceedings{e401a64642344341ad5171f7b95b331e,

title = "Microstructural evolution during ultrafast heat treament of medium carbon steels",

abstract = "The initial microstructure, its local composition and phase morphology determines the final microstructure in ultra fast heat treatment processes (UFHT). In the present study, we designed and performed, via dilatometry, UFHT processes involving heating rates higher than 250°C/s, peak austenitization and helium quenching. This UFHT leads to a carbon gradient within the austenite, as confirmed by thermodynamic and diffusion calculations. With microscopic techniques we shed light on the microstructure evolution of steels with different compositions and initial microstructures. The most commonly achieved microstructure from UFHT in medium-carbon-steels is a mixture of fine bainite and martensite. Partially dissolved cementite, carbides and other microstructural features could be identified as similar to the original, even after UFHT.",

keywords = "Diffusion, Martensite, Ultra fast heat treatment",

author = "S. Papaefthymiou and C. Goulas and Cerda, {F. Castro} and J. Sietsma and R. Petrov",

year = "2015",

language = "English",

pages = "569--570",

editor = "Long-Qing Chen and Matthias Militzer and Gianluigi Botton and James Howe and Chadwick Sinclair and Hatem Zurob",

booktitle = "PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015",

publisher = "International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015",

note = "International Conference on Solid-Solid Phase Transformations in Inorganic Materials, PTM 2015, PTM 2015 ; Conference date: 28-06-2015 Through 03-07-2015",

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Papaefthymiou, S, Goulas, C, Cerda, FC, Sietsma, J & Petrov, R 2015, Microstructural evolution during ultrafast heat treament of medium carbon steels. in L-Q Chen, M Militzer, G Botton, J Howe, C Sinclair & H Zurob (eds), PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015. International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, pp. 569-570, International Conference on Solid-Solid Phase Transformations in Inorganic Materials, PTM 2015, Whistler, British Columbia, Canada, 28/06/15.

Microstructural evolution during ultrafast heat treament of medium carbon steels. / Papaefthymiou, S.; Goulas, C.; Cerda, F. Castro et al.
PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015. ed. / Long-Qing Chen; Matthias Militzer; Gianluigi Botton; James Howe; Chadwick Sinclair; Hatem Zurob. International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015, 2015. p. 569-570.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic › peer-review

TY - GEN

T1 - Microstructural evolution during ultrafast heat treament of medium carbon steels

AU - Papaefthymiou, S.

AU - Goulas, C.

AU - Cerda, F. Castro

AU - Sietsma, J.

AU - Petrov, R.

PY - 2015

Y1 - 2015

N2 - The initial microstructure, its local composition and phase morphology determines the final microstructure in ultra fast heat treatment processes (UFHT). In the present study, we designed and performed, via dilatometry, UFHT processes involving heating rates higher than 250°C/s, peak austenitization and helium quenching. This UFHT leads to a carbon gradient within the austenite, as confirmed by thermodynamic and diffusion calculations. With microscopic techniques we shed light on the microstructure evolution of steels with different compositions and initial microstructures. The most commonly achieved microstructure from UFHT in medium-carbon-steels is a mixture of fine bainite and martensite. Partially dissolved cementite, carbides and other microstructural features could be identified as similar to the original, even after UFHT.

AB - The initial microstructure, its local composition and phase morphology determines the final microstructure in ultra fast heat treatment processes (UFHT). In the present study, we designed and performed, via dilatometry, UFHT processes involving heating rates higher than 250°C/s, peak austenitization and helium quenching. This UFHT leads to a carbon gradient within the austenite, as confirmed by thermodynamic and diffusion calculations. With microscopic techniques we shed light on the microstructure evolution of steels with different compositions and initial microstructures. The most commonly achieved microstructure from UFHT in medium-carbon-steels is a mixture of fine bainite and martensite. Partially dissolved cementite, carbides and other microstructural features could be identified as similar to the original, even after UFHT.

KW - Diffusion

KW - Martensite

KW - Ultra fast heat treatment

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SP - 569

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BT - PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

A2 - Chen, Long-Qing

A2 - Militzer, Matthias

A2 - Botton, Gianluigi

A2 - Howe, James

A2 - Sinclair, Chadwick

A2 - Zurob, Hatem

PB - International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015

T2 - International Conference on Solid-Solid Phase Transformations in Inorganic Materials, PTM 2015

Y2 - 28 June 2015 through 3 July 2015

ER -

Papaefthymiou S, Goulas C, Cerda FC, Sietsma J, Petrov R. Microstructural evolution during ultrafast heat treament of medium carbon steels. In Chen LQ, Militzer M, Botton G, Howe J, Sinclair C, Zurob H, editors, PTM 2015 - Proceedings of the International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015. International Conference on Solid-Solid Phase Transformations in Inorganic Materials 2015. 2015. p. 569-570

Microstructural evolution during ultrafast heat treament of medium carbon steels

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Keywords

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