GOALI: Localized Phase Transformation (LPT) Strengthening for Next-Generation Superalloys

Project Personnel

Michael Mills

Principal Investigator

Richard DiDomizio

Emmanuelle Marquis

Timothy Smith

Stephen Niezgoda

Yunzhi Wang

Maryam Ghazisaeidi

Funding Divisions

Division of Materials Research (DMR), Civil, Mechanical and Manufacturing Innovation (CMMI), Office of Multidisciplinary Activities (OMA)

Ni-base superalloys are critical enabling high-temperature structural materials that determine the efficiency and carbon footprint of a wide range of aerospace and land-based power generation systems such as gas turbines. This DMREF-GOALI project exploits a new design strategy that utilizes a localized phase transformation (LPT) phenomenon as a new “strengthening mechanism” to disruptively improve the high-temperature creep performance of Ni-base superalloys. These advances are being driven by advanced characterization and modeling in close collaboration with researchers at GE Research and NASA Glenn Research Center.  

Publications

Localized corrosion of thermally aged Cu-containing Ni-13Cr-10Fe alloys: The role of Cu enrichment induced grain boundary sensitization
K. Hariharan, L. Feng, K. Kadirvel, V. Karunakaran, K. Kosanam, N. Sridhar, Y. Wang, G. S. Frankel, and E. J. Schindelholz
6/1/2024
The High Temperature Strength of Single Crystal Ni‐base Superalloys – Re‐visiting Constant Strain Rate, Creep, and Thermomechanical Fatigue Testing
M. Sirrenberg, T. Babinský, D. Bürger, S. Guth, A. B. Parsa, P. Thome, A. Dlouhý, M. J. Mills, and G. Eggeler
5/28/2024
Yield stress anomaly and creep of single crystal Ni-base superalloys – Role of particle size
A. B. Parsa, M. Sirrenberg, D. Bürger, M. J. Mills, A. Dlouhy, and G. Eggeler
5/1/2024
Optimizing Local Phase Transformation in Ni-Based Superalloys Utilizing Thermodynamically Driven Design Framework and Multiscale Characterization
A. J. Egan, L. Feng, T. M. Smith, Y. Wang, and M. J. Mills
1/1/2024
Formation mechanisms of coprecipitates in Inconel 718 Superalloys
H. Sriram, S. Mukhopadhyay, K. Kadirvel, R. Shi, M. J. Mills, and Y. Wang
5/1/2023
A 3D printable alloy designed for extreme environments
T. M. Smith, C. A. Kantzos, N. A. Zarkevich, B. J. Harder, M. Heczko, P. R. Gradl, A. C. Thompson, M. J. Mills, T. P. Gabb, and J. W. Lawson
4/19/2023
Phase field modeling of shearing processes of a dual-lobed γ″|γ′|γ″ coprecipitate
L. Feng, R. Shi, C. H. Zenk, M. J. Mills, and Y. Wang
3/1/2023
Deformation Mechanisms Rationalisation to Design for Creep Resistance in Polycrystalline Ni-Based Superalloys
D. Barba, A. Egan, S. Utada, Y. Gong, Y. T. Tang, V. Mazanova, M. J. Mills, and R. C. Reed
1/15/2023
Localized phase transformation at stacking faults and mechanism-based alloy design
L. Feng, S. B. Kannan, A. Egan, T. Smith, M. J. Mills, M. Ghazisaeidi, and Y. Wang
11/1/2022
Local Phase Transformation Strengthening at Microtwin Boundaries in Nickel-Based Superalloys
A. J. Egan, F. Xue, Y. Rao, G. Sparks, E. Marquis, M. Ghazisaeidi, S. Tin, and M. J. Mills
10/1/2022
Dynamic localized phase transformation at stacking faults during creep deformation and new criterion for superalloy design
L. Feng, A. Egan, F. Xue, E. Marquis, M. J. Mills, and Y. Wang
9/7/2022
Generalized stacking fault energy surface mismatch and dislocation transformation
L. Feng, M. J. Mills, and Y. Wang
12/10/2021
Creep Behavior of Compact γ′-γ″ Coprecipitation Strengthened IN718-Variant Superalloy
S. Mukhopadhyay, H. Sriram, C. H. Zenk, R. DiDomizio, A. J. Detor, R. W. Hayes, G. B. Viswanathan, Y. Wang, and M. J. Mills
11/25/2021
Shearing mechanisms of co-precipitates in IN718
C. H. Zenk, L. Feng, D. McAllister, Y. Wang, and M. J. Mills
11/1/2021
A general phase-field framework for predicting the structures and micromechanical properties of crystalline defects
D. Qiu, P. Zhao, and Y. Wang
11/1/2021
Utilizing local phase transformation strengthening for nickel-base superalloys
T. M. Smith, N. A. Zarkevich, A. J. Egan, J. Stuckner, T. P. Gabb, J. W. Lawson, and M. J. Mills
10/14/2021
Yielding behavior of a single-crystalline γ'-strengthened Co-Ti-Cr superalloy
A. Bezold, N. Volz, M. Lenz, C. H. Zenk, E. Spiecker, M. Mills, M. Göken, and S. Neumeier
7/1/2021
Can experiment determine the stacking fault energy of metastable alloys?
X. Sun, S. Lu, R. Xie, X. An, W. Li, T. Zhang, C. Liang, X. Ding, Y. Wang, H. Zhang, and L. Vitos
2/1/2021
Stress-dependent dislocation core structures leading to non-Schmid behavior
D. Qiu, P. Zhao, D. R. Trinkle, and Y. Wang
12/18/2020
Quantitative prediction of Suzuki segregation at stacking faults of the γ’ phase in Ni-base superalloys
L. Feng, Y. Rao, M. Ghazisaeidi, M. J. Mills, and Y. Wang
11/1/2020
Rationalisation of the Micromechanisms Behind the High-Temperature Strength Limit in Single-Crystal Nickel-Based Superalloys
D. Barba, A. J. Egan, Y. Gong, M. J. Mills, and R. C. Reed
1/1/2020
Supersolvus Hot Workability and Dynamic Recrystallization in Wrought Co–Al–W-Base Alloys
K. Wertz, D. Weaver, D. Wen, M. S. Titus, R. Shivpuri, S. R. Niezgoda, M. J. Mills, and S. L. Semiatin
1/1/2020
An Approach Toward Understanding Unstable Gamma Prime Precipitate Evolution and Its Effect on Properties
N. Krutz, C. Shen, M. Karadge, A. J. Egan, J. R. Bennett, T. Hanlon, and M. J. Mills
1/1/2020
Superalloys 2020
1/1/2020
Enhancing the Creep Strength of Next-Generation Disk Superalloys via Local Phase Transformation Strengthening in Superalloys 2020
Effect of Nb Alloying Addition on Local Phase Transformation at Microtwin Boundaries in Nickel-Based Superalloys in Superalloys 2020

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Research Highlights

A 3D Printable Alloy Designed for Extreme Environments
Michael Mills (Ohio State University)
6/16/2025

Designing Materials to Revolutionize and Engineer our Future (DMREF)