Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy

Mo Ji; Vit Janik; Martin Strangwood; Claire Davis

Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy

Mo Ji, Vit Janik, Martin Strangwood, Claire Davis

Metallurgy and Materials

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

1 Citation (Scopus)

Abstract

The high strength and toughness of microalloyed steels are derived by controlled rolling schedules, using recrystallisation to give grain refinement. A number of relationships (based on the JMAK equations) for the rate of recrystallisation, with a range of Avrami parameter values, have been reported. This paper discusses the role of grain size distribution on the recrystallisation rates and Avrami values for an austenitic model steel (Fe-30 Ni). Cold deformation has been used to provide uniform macroscopic strain distributions (strains of 0.2 and 0.3, which are equivalent to 0.27 and 0.45 strain if deformed at 850°C), followed by recrystallisation during annealing at 850 – 950°C. It is shown that the Avrami parameter is directly related to the grain size distribution, with a lower Avrami exponent being seen for a larger average and wider grain size distribution. In-situ heating in an SEM with EBSD has shown the recrystallisation kinetics to be affected by both nucleation site and local strain heterogeneity.

Original language	English
Title of host publication	Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016)
Editors	Gregory S. Rohre, Anthony D. Rollett, Elizabeth A. Holm, David Srolovitz, Susan Farjami, Priyadarshan Manohar, Hasso Weiland
Publisher	Springer
Pages	153-158
Number of pages	6
ISBN (Electronic)	978-3-319-48770-0
ISBN (Print)	978-3-319-48626-0
Publication status	Published - 10 Feb 2017
Event	6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016 - Pittsburgh, United States Duration: 17 Jul 2016 → 21 Jul 2016

Conference

Conference	6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016
Country/Territory	United States
City	Pittsburgh
Period	17/07/16 → 21/07/16

Keywords

In-situ EBSD
JMAK model
Recrystallisation

ASJC Scopus subject areas

Mechanics of Materials
General Materials Science

Cite this

Ji, M., Janik, V., Strangwood, M., & Davis, C. (2017). Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy. In G. S. Rohre, A. D. Rollett, E. A. Holm, D. Srolovitz, S. Farjami, P. Manohar, & H. Weiland (Eds.), Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016) (pp. 153-158). Springer.

Ji, Mo ; Janik, Vit ; Strangwood, Martin et al. / Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy. Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016). editor / Gregory S. Rohre ; Anthony D. Rollett ; Elizabeth A. Holm ; David Srolovitz ; Susan Farjami ; Priyadarshan Manohar ; Hasso Weiland. Springer, 2017. pp. 153-158

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title = "Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy",

abstract = "The high strength and toughness of microalloyed steels are derived by controlled rolling schedules, using recrystallisation to give grain refinement. A number of relationships (based on the JMAK equations) for the rate of recrystallisation, with a range of Avrami parameter values, have been reported. This paper discusses the role of grain size distribution on the recrystallisation rates and Avrami values for an austenitic model steel (Fe-30 Ni). Cold deformation has been used to provide uniform macroscopic strain distributions (strains of 0.2 and 0.3, which are equivalent to 0.27 and 0.45 strain if deformed at 850°C), followed by recrystallisation during annealing at 850 – 950°C. It is shown that the Avrami parameter is directly related to the grain size distribution, with a lower Avrami exponent being seen for a larger average and wider grain size distribution. In-situ heating in an SEM with EBSD has shown the recrystallisation kinetics to be affected by both nucleation site and local strain heterogeneity.",

keywords = "In-situ EBSD, JMAK model, Recrystallisation",

author = "Mo Ji and Vit Janik and Martin Strangwood and Claire Davis",

year = "2017",

month = feb,

day = "10",

language = "English",

isbn = "978-3-319-48626-0",

pages = "153--158",

editor = "Rohre, {Gregory S.} and Rollett, {Anthony D.} and Holm, {Elizabeth A.} and David Srolovitz and Susan Farjami and Priyadarshan Manohar and Hasso Weiland",

booktitle = "Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016)",

publisher = "Springer",

note = "6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016 ; Conference date: 17-07-2016 Through 21-07-2016",

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Ji, M, Janik, V, Strangwood, M & Davis, C 2017, Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy. in GS Rohre, AD Rollett, EA Holm, D Srolovitz, S Farjami, P Manohar & H Weiland (eds), Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016). Springer, pp. 153-158, 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016, Pittsburgh, United States, 17/07/16.

Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy. / Ji, Mo; Janik, Vit; Strangwood, Martin et al.
Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016). ed. / Gregory S. Rohre; Anthony D. Rollett; Elizabeth A. Holm; David Srolovitz; Susan Farjami; Priyadarshan Manohar; Hasso Weiland. Springer, 2017. p. 153-158.

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

TY - GEN

T1 - Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy

AU - Ji, Mo

AU - Janik, Vit

AU - Strangwood, Martin

AU - Davis, Claire

PY - 2017/2/10

Y1 - 2017/2/10

N2 - The high strength and toughness of microalloyed steels are derived by controlled rolling schedules, using recrystallisation to give grain refinement. A number of relationships (based on the JMAK equations) for the rate of recrystallisation, with a range of Avrami parameter values, have been reported. This paper discusses the role of grain size distribution on the recrystallisation rates and Avrami values for an austenitic model steel (Fe-30 Ni). Cold deformation has been used to provide uniform macroscopic strain distributions (strains of 0.2 and 0.3, which are equivalent to 0.27 and 0.45 strain if deformed at 850°C), followed by recrystallisation during annealing at 850 – 950°C. It is shown that the Avrami parameter is directly related to the grain size distribution, with a lower Avrami exponent being seen for a larger average and wider grain size distribution. In-situ heating in an SEM with EBSD has shown the recrystallisation kinetics to be affected by both nucleation site and local strain heterogeneity.

AB - The high strength and toughness of microalloyed steels are derived by controlled rolling schedules, using recrystallisation to give grain refinement. A number of relationships (based on the JMAK equations) for the rate of recrystallisation, with a range of Avrami parameter values, have been reported. This paper discusses the role of grain size distribution on the recrystallisation rates and Avrami values for an austenitic model steel (Fe-30 Ni). Cold deformation has been used to provide uniform macroscopic strain distributions (strains of 0.2 and 0.3, which are equivalent to 0.27 and 0.45 strain if deformed at 850°C), followed by recrystallisation during annealing at 850 – 950°C. It is shown that the Avrami parameter is directly related to the grain size distribution, with a lower Avrami exponent being seen for a larger average and wider grain size distribution. In-situ heating in an SEM with EBSD has shown the recrystallisation kinetics to be affected by both nucleation site and local strain heterogeneity.

KW - In-situ EBSD

KW - JMAK model

KW - Recrystallisation

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M3 - Conference contribution

AN - SCOPUS:85025128770

SN - 978-3-319-48626-0

SP - 153

EP - 158

BT - Proceedings of the 6th International Conference on Recrystallization and Grain Growth (ReX&GG 2016)

A2 - Rohre, Gregory S.

A2 - Rollett, Anthony D.

A2 - Holm, Elizabeth A.

A2 - Srolovitz, David

A2 - Farjami, Susan

A2 - Manohar, Priyadarshan

A2 - Weiland, Hasso

PB - Springer

T2 - 6th International Conference on Recrystallization and Grain Growth, ReX and GG 2016

Y2 - 17 July 2016 through 21 July 2016

ER -

Effect of grain size distribution on recrystallisation kinetics in a Fe-30Ni model alloy

Abstract

Conference

Keywords

ASJC Scopus subject areas

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