Deep Learning-Driven Phase Field Study on Creep and Accelerated Design of Superalloys
Research Seminar Series
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Date
13 Nov 2026
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Organiser
Department of Industrial and Systems Engineering, PolyU
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Time
16:00 - 17:30
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Venue
PQ305
Speaker
Prof. Yongsheng Li
Remarks
If you have enquiries regarding E-certificate after the seminar, please contact david.kuo@polyu.edu.hk.
Summary
High-temperature creep dominates the damage and failure of aerospace materials. Creep behavior of precipitation-strengthened superalloys and lamellar TiAl alloys complicates service life prediction and compositional optimization, while multi-component superalloy development suffers from vast composition difference and nonlinear high-dimensional parameter interactions. This work establishes a dual data–physics driven framework integrating deep learning and phase-field simulations for accelerated superalloy design. Combined with crystal plasticity and creep damage theory, this cross-scale framework efficiently captures thermo-mechanically induced γ′ phase evolution, rafting kinetics and interfacial stability. We reveal cross-scale links between dislocation activity, interface damage and creep failure, and identify key composition–microstructure–property correlations. This paradigm enables intelligent performance prediction and composition-microstructure co-optimization, supporting the development of long-life aerospace hot-section materials.
Keynote Speaker
Prof. Yongsheng Li
Professor
School of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, China
Li Yongsheng, Professor and Doctoral Supervisor, School of Materials Science and Engineering, Nanjing University of Science and Technology. Research interests cover phase transformation and microstructure-property relationships of superalloys, steels and titanium aluminides, irradiation damage and crystal defects, as well as phase-field simulation of material microstructures and machine learning. An AI-empowered multiscale method integrating artificial intelligence with phase-field modelling is established to investigate the microstructure evolution and damage of alloys under complex thermo-mechanical coupling conditions. A total of 130 academic papers are published. More than 20 national and provincial research projects are presided over and participated in. Eight authorized national invention patents and 2 software copyrights are obtained. Seven provincial and ministerial science and technology awards are conferred, including the First Prize of Jiangsu Provincial Science and Technology Award.
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