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Gradient Nanostructured Metallic Materials

Distinguished Research Seminar Series

20211101_Lei Lu_Event Banner
  • Date

    01 Nov 2021

  • Organiser

    Department of Industrial and Systems Engineering, PolyU

  • Time

    15:00 - 16:30

  • Venue

    Online via ZOOM  

Speaker

Prof. Lei Lu

Remarks

Meeting link will be sent to successful registrants

20211101_Lei Lu_Poster

Summary

Inspired by the gradient structures of biomaterials in nature, the gradient strategy has also been explored for engineering metallic materials. Various gradient nanostructured materials exhibit unprecedented mechanical properties, such as strength-ductility synergy, extraordinary strain hardening and enhanced fracture and fatigue resistance, which do not exist in materials with homogeneous or random mixed microstructures. In this talk, I aim at reviewing a critical assessment of the state of the art of a few gradient nanostructured materials, like gradient nanograined (GNG) and dual-gradient nanotwinned (GNT) Cu, as well as gradient cell-structured high entropy alloys, covering topics ranging from fabrication, mechanical property characterization and underlying deformation mechanism investigation. We discuss various deformation behaviors induced by structural gradients, stress/strain gradients, new dislocation structures and interactions to unravel the mechanistic origin of extra strengthening and work hardening associated with gradient structures. The findings offer a promising paradigm for tailoring properties with gradient structures at nanoscale and advance our fundamental understanding of the intrinsic deformation mechanism of gradient nanostructured materials.

Keynote Speaker

Prof. Lei Lu

Prof. Lei Lu

Shengyang National Laboratory for Materials Science 
Institute of Metal Research 
Chinese Academy of Sciences 
Shenyang, China

 

Dr. Lei Lu is a distinguished professor in Institute of Metal Research, Chinese Academy of Sciences, where she received her Ph.D. degree in 2000. She is the member of International Community of Nanostructured Materials and International conference on the Strength of Materials (ICSMA). Lu’s research is focused on the fundamental research of the synthesis, microstructure characteristic and mechanical properties of nanostructured metallic materials. She authored and co-authored more than 120 peer-review international journal publications (including 6 Science, 2 Nature, ~30 Acta Mater. etc.) with total citations exceeding 15000 and presented more than 70 invited or plenary lectures at international conferences. She was selected as Thomson Reuters highly cited Researcher from 2014 to 2016. Now, she is serving Acta Materialia & Scripta Materialia journals as an editor. Read More

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