Contact Information:

Email: xyi@pku.edu.cn

Tel: 010-62755995

Homepage: https://sites.google.com/view/yixin1983

Work experience:

Associate Professor, College of Engineering, Peking University, 02/2023–present

Assistant Professor, College of Engineering, Peking University, 11/2016–02/2023

Postdoctoral Associate, Dartmouth College, 07/2016–11/2016

Postdoctoral Associate, Brown University, 09/2014–06/2016

Education:

Ph.D., Mechanical Engineering, Brown University, 2008–2014

M.S., Mechanical Engineering, Peking University, 2005–2008

B.Eng., Mechanical Engineering, Peking University, 2001–2005

Research Areas:

Mechanics of nanostructured metals; Mechanics of soft matter

Interested Research Areas in CAPT：

Effects of irradiation on mechanical properties of metallic materials and soft matter

Grants and Awards：

1. Multiscale Studies of Soft Interface Mechanics, PI, 2021–2023, Excellent Young Researcher Program, National Natural Science Foundation of China
2. Multiscale Modeling of Irradiation Effects on Mechanical, Electrical and Optical Properties of GaN Materials, PI, 2019–2021, National Natural Science Foundation of China
3. Mechanical Behaviors of Micro-/Nanomaterials in Both Engineering and Biology, PI, 2017–2019, Young Scientists Fund Program
4. The 18th CSTAM Youth Science and Technology Award, 2023, The Chinese Society of Theoretical and Applied Mechanics (CSTAM)

Selected Publications：

1. Q. Han, J. Li, X. Yi, Overcoming strength–ductility trade-off of nanocrystalline metals by engineering grain boundary, texture, and gradient microstructure. Journal of the Mechanics and Physics of Solids 173, 105200 (2023).
2. Q. Han, X. Yi, High pressure-induced elimination of grain size softening in nanocrystalline metals: Grain boundary strengthening overwhelming reduction of intragranular dislocation storage ability. International Journal of Plasticity 153, 103261 (2022).
3. Z. Dong, X. Zhang, S. Peng, F. Jin, Q. Wan, J. Xue, X. Yi, Mechanical properties of GaN single crystals upon C ion irradiation: Nanoindentation analysis. Materials 15, 1210 (2022).
4. Q. Han and X. Yi, A unified mechanistic model for Hall–Petch and inverse Hall–Petch relations of nanocrystalline metals based on intragranular dislocation storage. Journal of the Mechanics and Physics of Solids 154, 104530 (2021).
5. X. Ren, H. Liu, F. Lu, L. Huang, X. Yi, Effects of processing parameters on the densification, microstructures and mechanical properties of pure tungsten fabricated by optimized selective laser melting: From single and multiple scan tracks to bulk parts. International Journal of Refractory Metals and Hard Materials 96, 105490 (2021).