Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system

Tao Wang; Guang Sheng; Zi Kui Liu; Long Qing Chen

doi:10.1016/j.actamat.2008.07.024

Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system

Tao Wang, Guang Sheng, Zi Kui Liu, Long Qing Chen

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124 Scopus citations

Abstract

The effect of Mo on the microstructure evolution and coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system is studied using phase-field simulations with inputs from thermodynamic, kinetic and lattice parameter databases. For alloys of different compositions, the precipitate morphology and the statistical information of precipitate sizes are predicted as a function of annealing time. It is observed that increasing Mo content leads to a change of the precipitate morphology from being cuboidal to spherical as well as a reduction in the coarsening rate. Comparison between simulated results and existing experimental microstructure morphologies and coarsening rates shows good agreements.

Original language	English (US)
Pages (from-to)	5544-5551
Number of pages	8
Journal	Acta Materialia
Volume	56
Issue number	19
DOIs	https://doi.org/10.1016/j.actamat.2008.07.024
State	Published - Nov 2008

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2008.07.024

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title = "Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system",

abstract = "The effect of Mo on the microstructure evolution and coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system is studied using phase-field simulations with inputs from thermodynamic, kinetic and lattice parameter databases. For alloys of different compositions, the precipitate morphology and the statistical information of precipitate sizes are predicted as a function of annealing time. It is observed that increasing Mo content leads to a change of the precipitate morphology from being cuboidal to spherical as well as a reduction in the coarsening rate. Comparison between simulated results and existing experimental microstructure morphologies and coarsening rates shows good agreements.",

author = "Tao Wang and Guang Sheng and Liu, {Zi Kui} and Chen, {Long Qing}",

note = "Funding Information: This work is funded by the National Science Foundation (NSF) through Grant DMR-0205232. Simulations were carried out on the LION clusters at the Pennsylvania State University supported in part by the NSF Grants (DMR-9983532, DMR-0122638, DMR-0710483 and DMR-0205232) and in part by the Materials Simulation Center and the Graduate Education and Research Services at the Pennsylvania State University. The authors also want to thank Dr. Michael G. Fahrmann for providing the original TEM images.",

year = "2008",

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doi = "10.1016/j.actamat.2008.07.024",

language = "English (US)",

volume = "56",

pages = "5544--5551",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Acta Materialia Inc",

number = "19",

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TY - JOUR

T1 - Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system

AU - Wang, Tao

AU - Sheng, Guang

AU - Liu, Zi Kui

AU - Chen, Long Qing

N1 - Funding Information: This work is funded by the National Science Foundation (NSF) through Grant DMR-0205232. Simulations were carried out on the LION clusters at the Pennsylvania State University supported in part by the NSF Grants (DMR-9983532, DMR-0122638, DMR-0710483 and DMR-0205232) and in part by the Materials Simulation Center and the Graduate Education and Research Services at the Pennsylvania State University. The authors also want to thank Dr. Michael G. Fahrmann for providing the original TEM images.

PY - 2008/11

Y1 - 2008/11

N2 - The effect of Mo on the microstructure evolution and coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system is studied using phase-field simulations with inputs from thermodynamic, kinetic and lattice parameter databases. For alloys of different compositions, the precipitate morphology and the statistical information of precipitate sizes are predicted as a function of annealing time. It is observed that increasing Mo content leads to a change of the precipitate morphology from being cuboidal to spherical as well as a reduction in the coarsening rate. Comparison between simulated results and existing experimental microstructure morphologies and coarsening rates shows good agreements.

AB - The effect of Mo on the microstructure evolution and coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system is studied using phase-field simulations with inputs from thermodynamic, kinetic and lattice parameter databases. For alloys of different compositions, the precipitate morphology and the statistical information of precipitate sizes are predicted as a function of annealing time. It is observed that increasing Mo content leads to a change of the precipitate morphology from being cuboidal to spherical as well as a reduction in the coarsening rate. Comparison between simulated results and existing experimental microstructure morphologies and coarsening rates shows good agreements.

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DO - 10.1016/j.actamat.2008.07.024

M3 - Article

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SN - 1359-6454

VL - 56

SP - 5544

EP - 5551

JO - Acta Materialia

JF - Acta Materialia

IS - 19

ER -

Coarsening kinetics of γ′ precipitates in the Ni-Al-Mo system

Abstract

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