On the modelling of precipitation kinetics in a turbine disc nickel based superalloy

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On the modelling of precipitation kinetics in a turbine disc nickel based superalloy. / Anderson, M.j.; Schulz, F.; Kitaguchi, H.s.; Bowen, P.; Argyrakis, C.; Basoalto, Hector.

In: Acta Materialia, Vol. 191, 01.06.2020, p. 81-100.

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Anderson, M.j. ; Schulz, F. ; Kitaguchi, H.s. ; Bowen, P. ; Argyrakis, C. ; Basoalto, Hector. / On the modelling of precipitation kinetics in a turbine disc nickel based superalloy. In: Acta Materialia. 2020 ; Vol. 191. pp. 81-100.

Bibtex

@article{c81fb487c7b649e0aab77c4fdd054250,
title = "On the modelling of precipitation kinetics in a turbine disc nickel based superalloy",
abstract = "The precipitation kinetics of gamma prime in the nickel based superalloy RR1000 has been characterised after solid-solution heat treatments and isothermal aging conditions relevant to service conditions. Multi-modal precipitate dispersions are formed within the alloy. Numerical methods are presented for determining the three dimensional size of the particle populations combining information obtained from Scanning Electron microscopy and Transmission Electron microscopy. This information has been used to develop a multi-component mean-field model descriptive of precipitation kinetics. The smallest particle population increases in mean size during isothermal aging at 700 ∘C where classical mean-field models of coarsening kinetics suggest that these particles should dissolve. A phenomenological model has been proposed to capture this behaviour within a statistical formulation that is applicable to both processing and service conditions.",
keywords = "Nickel based superalloy, RR1000, Particle coarsening, Mean-field theory, Multi-components systems, Multi-modal particle radius distribution",
author = "M.j. Anderson and F. Schulz and H.s. Kitaguchi and P. Bowen and C. Argyrakis and Hector Basoalto",
year = "2020",
month = jun,
day = "1",
doi = "10.1016/j.actamat.2020.03.058",
language = "English",
volume = "191",
pages = "81--100",
journal = "Acta Materialia",
issn = "1359-6454",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - On the modelling of precipitation kinetics in a turbine disc nickel based superalloy

AU - Anderson, M.j.

AU - Schulz, F.

AU - Kitaguchi, H.s.

AU - Bowen, P.

AU - Argyrakis, C.

AU - Basoalto, Hector

PY - 2020/6/1

Y1 - 2020/6/1

N2 - The precipitation kinetics of gamma prime in the nickel based superalloy RR1000 has been characterised after solid-solution heat treatments and isothermal aging conditions relevant to service conditions. Multi-modal precipitate dispersions are formed within the alloy. Numerical methods are presented for determining the three dimensional size of the particle populations combining information obtained from Scanning Electron microscopy and Transmission Electron microscopy. This information has been used to develop a multi-component mean-field model descriptive of precipitation kinetics. The smallest particle population increases in mean size during isothermal aging at 700 ∘C where classical mean-field models of coarsening kinetics suggest that these particles should dissolve. A phenomenological model has been proposed to capture this behaviour within a statistical formulation that is applicable to both processing and service conditions.

AB - The precipitation kinetics of gamma prime in the nickel based superalloy RR1000 has been characterised after solid-solution heat treatments and isothermal aging conditions relevant to service conditions. Multi-modal precipitate dispersions are formed within the alloy. Numerical methods are presented for determining the three dimensional size of the particle populations combining information obtained from Scanning Electron microscopy and Transmission Electron microscopy. This information has been used to develop a multi-component mean-field model descriptive of precipitation kinetics. The smallest particle population increases in mean size during isothermal aging at 700 ∘C where classical mean-field models of coarsening kinetics suggest that these particles should dissolve. A phenomenological model has been proposed to capture this behaviour within a statistical formulation that is applicable to both processing and service conditions.

KW - Nickel based superalloy

KW - RR1000

KW - Particle coarsening

KW - Mean-field theory

KW - Multi-components systems

KW - Multi-modal particle radius distribution

U2 - 10.1016/j.actamat.2020.03.058

DO - 10.1016/j.actamat.2020.03.058

M3 - Article

VL - 191

SP - 81

EP - 100

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

ER -