Name: Liu Yan Title: Distinguished Professor

Email: liuyswallow@ncu.edu.cn

Supervisor Type: Master's/PhD Supervisor

Main Courses: Die Manufacturing Technology

Personal Website:

Research Directions

Main research interests focus on additive manufacturing, microstructural control and mechanical behavior of superalloys.

Education Background

2018-2023, Doctor of Philosophy (PhD) in Materials Science and Engineering, Northwestern Polytechnical University

Work Experience

Sep. 2023- Sep. 2025 Postdoc in Huazhong University of Science and Technology, Postdoc

Academic Appointments

No

Honors and Awards

2024: Special Awards of "Science and Technology Research Excellence Award for Disciplines in Shaanxi Universities" (Participant)

2022: Chongde Scholarship

Major Achievements

My research is primarily focused on the field of superalloys (TiAl and Ni-based alloys), with systematic investigations centered on microstructural control, additive manufacturing technologies and mechanical behaviors. I have been conducting continuous research on core technical directions including phase transformation mechanisms, deformation mechanisms, strengthening and toughening mechanisms, creep mechanisms and crack inhibition mechanisms. Closely aligned with the national strategic demands in high-end equipment, aerospace and other key fields, the relevant research is dedicated to addressing the critical technical bottlenecks in superalloy manufacturing, and providing theoretical support and technical approaches for the R&D and industrial application of high-performance alloy components. Up to now, I have published 15 academic papers in prestigious journals including Acta Materialia and Journal of Materials Science & Technology, presided over 2 national-level research projects, and participated in a number of projects funded by the National Natural Science Foundation of China and the National Key R&D Program.

Research Projects:

1. Postdoctoral General Funding (Principal Investigator): Study on Residual β₀ Phase Transformation and Its Mechanical Behavior in β-γ Type TiAl Alloys (Project No.: 2024M750998)

2. National Postdoctoral Funding Program - Grade C Support (Postdoctoral Innovative Talent Program - Grade C; Principal Investigator): Study on the Synergistic Regulation Mechanism of Microstructure/Stress and Mechanical Behavior of TiAl Alloys Fabricated by Triple-Laser Directed Energy Deposition (Project No.: GZC20240524)

3. Space Station Application and R&D (Incubation Project; Participant): Study on In-Orbit Laser Melting Behavior of XXX Alloy (Project No.: 2022-JCJQ-JJ-0893)

4. General Program of National Natural Science Foundation of China (Participant): Rolling Deformation Control of XXX Alloy Based on Synergistic Effect of Recrystallization and Cellular Reaction (Project No.: 52174377)

5. Open Project of National Key Laboratory of Clean and Efficient Turbine Power Equipment (Participant): Effect of LPBF Forming Heat Treatment Process on Cracks, Microstructure and Short-Term Stress Rupture Properties of a Certain Type of Nickel-Based Superalloy (Project No.: 202542068000782)

Representative Papers:

1) Yan Liu, Jinshan Li, Bin Tang, Lin Song, William Yi Wang, Dong Liu, Rui Yang, Hongchao Kou, Decomposition and phase transformation mechanisms of α2 lamellae in a β-solidified γ-TiAl alloy, Acta Materialia 242(2023)118492.

2) Yan Liu, Jinshan Li, Bin Tang, William Yi Wang, Minjie Lai, Lei Zhu, Hongchao Kou. Formation mechanism of γ twins in β-solidified γ-TiAl alloys. Journal of Materials Science & Technology 105(2022)164-171.

3) Yan Liu, Jinshan Li, Bin Tang, Kaidi Li, Lumeng Wang, Chunming Liu, The formation of adjoining twin pairs in TiAl alloys, Rare Metals 44(2025) 4162-4172.

4) Yan Liu, Jinshan Li, Bin Tang, William Yi Wang, Yundong Chu, Xiaofei Chen, Hongchao Kou, The microstructure evolution and phase transformation behavior of a β-solidifying γ-TiAl alloy during creep deformation, Progress in Natural Science: Materials International 33 (2023) 193–202.

5) Yan Liu, Bin Tang, Xiaoyu Huang, Lei Zhu, Dong Liu, Rui Yang, Jinshan Li, Microstructural stability and creep properties of a middle Nb γ-TiAl alloy with a modulated microstructure, Intermetallics 151 (2022) 107733.

6) Yan Liu, Kai Hu, Jun Song, Xu Zheng, Yu Song, Bo Song, Yusheng Shi, Crack formation mechanisms in laser-directed energy deposited high-Nb TiAl alloys, Intermetallics, 187 (2025) 108975.

7) Yongjun Zhang, Yonggang Yao, Yan Liu, Functional High EntropyAlloys and Compounds, WILEY, 10: 2025 (参编)

8) Lei Li, Yan Liu, Xiaonan Mao, Liying Zeng, Vincent JI, Structure transformation of Ti films deposited on SiC single crystal substrates, Materials Characterization 134(2017)64-68.

9) 吴祖胜，刘燕，高建宝，章媛洁，张金良，宋波，史玉升，直接时效对激光增材制造Al-Cu-Mg-Li-Sc-Zr合金组织与性能的影响，材料热处理学报，45(2024)48-57.

10) 郑旭，宋军，宋波，张磊，钟诗宇，刘燕，章媛洁，史玉升，骨植入NiTi合金激光粉末床熔融工艺与超弹性能，接收，中国激光

11) Xiaofei Chen, Bin Tang, Yan Liu, Xiangyi Xue, Lei Li, Hongchao Kou, Jinshan Li, Dynamic recrystallization behavior of the Ti–48Al–2Cr–2Nb alloy during isothermal hot deformation, Progress in Natural Science: Materials International 29(201)587-594.

12) LeiZhu, JinshanLi, BinTang, Yan Liu, LeiLi, HongchaoKou, Microstructure evolution and mechanical properties of diffusion bonding high Nb containing TiAl alloy to Ti2AlNb alloy, Vacuum 164(2019).

13) BinTang, William Yi Wang, Lin Xiang, Yan Liu, Jinshan Li, Metadynamic recrystallization behavior of β-solidified TiAl alloy during post-annealing after hot deformation, Intermetallics 117(2020)106679.

14) Yudong Chu, Jinshan Li, Lei Zhu, Yan Liu, Bin Tang, Hongchao Kou, Microstructural evolution resulting from different deformation mechanisms of a high-Nb-containing TiAl alloy with harmonic structure during elevated-temperature deformation, Materials Letters 242(2019)35-38.（通讯作者）

Representative Patents:

1) Li L, Li S L, Hou Z M, Liu Y, Zhao H Z, Mao C L. A preparation method of face-centered cubic (fcc) titanium[P]. China: ZL201710603363.8, 2018-08-21.