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Created
August 10, 2022 14:25
by
sle34
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Updated
August 10, 2022 14:25
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[unknown user]
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Added Creator Sandra Elder
August 10, 2022 14:25
by
sle34
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Added
Three-dimensional Phase-field simulation of γ′′ precipitation kinetics in Inconel 625 during heat treatment.pdf
August 10, 2022 14:27
by
sle34
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August 10, 2022 14:28
by
sle34
Publication Date
License
- https://rightsstatements.org/page/InC/1.0/
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Published
August 10, 2022 14:28
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sle34
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Updated
Keyword, Publisher, Publisher Identifier (DOI), and 2 more
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September 12, 2023 12:48
by
avs5190
Keyword
- Phase-field model, Precipitation kinetics, Non-isothermal aging, Nickel-base alloys, Precipitation strengthening, γ′′
Publisher
- Computational Materials Science
Publisher Identifier (DOI)
- https://doi.org/10.1016/j.commatsci.2020.110123
Description
Metastable gamma '' (D0(22)-Ni3Nb) particles are strengthening precipitates for commercial Inconel 625 Ni-based superalloy. Understanding their morphological evolution is critical for evaluating its hardening effects and guiding heat treatments to improve its yield strength. Here we present a phase-field model to model and analyze the nucleation and growth kinetics of metastable gamma '' in Inconel 625 during isothermal and non-isothermal aging conditions with thermodynamic properties, diffusion coefficients, and misfit strain data from both the literature and calibration to experimental results. We implemented the classical nucleation theory to introduce local nucleation taking into account local supersaturation. The simulated mean particle length and aspect ratio are in agreement with experimental data at 600 degrees C and 650 degrees C during isothermal aging. Utilizing the phase-field simulation results as input parameters, the coherency strengthening effect of gamma '' as a function of aging temperature and time is predicted. A multistage aging strategy to optimize the gamma '' strengthening effect and to reduce aging times using the developed phase-field model and coherency strengthening model is suggested.
- Metastable γ″ (D022-Ni3Nb) particles are strengthening precipitates for commercial Inconel 625 Ni-based superalloy. Understanding their morphological evolution is critical for evaluating its hardening effects and guiding heat treatments to improve its yield strength. Here we present a phase-field model to model and analyze the nucleation and growth kinetics of metastable γ″ in Inconel 625 during isothermal and non-isothermal aging conditions with thermodynamic properties, diffusion coefficients, and misfit strain data from both the literature and calibration to experimental results. We implemented the classical nucleation theory to introduce local nucleation taking into account local supersaturation. The simulated mean particle length and aspect ratio are in agreement with experimental data at 600 °C and 650 °C during isothermal aging. Utilizing the phase-field simulation results as input parameters, the coherency strengthening effect of γ″ as a function of aging temperature and time is predicted. A multistage aging strategy to optimize the γ″ strengthening effect and to reduce aging times using the developed phase-field model and coherency strengthening model is suggested.
Publication Date
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Deleted Creator Sandra Elder
September 12, 2023 12:49
by
avs5190
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Added Creator Caleb O. Yenusah
September 12, 2023 12:49
by
avs5190
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Added Creator Yanzhou Ji
September 12, 2023 12:49
by
avs5190
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Added Creator Yucheng Liu
September 12, 2023 12:49
by
avs5190
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Added Creator Tonya W. Stone
September 12, 2023 12:49
by
avs5190
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Added Creator Mark F. Horstemeyer
September 12, 2023 12:49
by
avs5190
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Added Creator Long-Qing Chen
September 12, 2023 12:49
by
avs5190
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Added Creator Lei Chen
September 12, 2023 12:49
by
avs5190
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Updated
April 04, 2024 10:21
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[unknown user]