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Forum Program Names
Speaker Photo
Mingxin Huang
Speaker University
The University of Hong Kong, China
Speaker Biography

Prof. Huang received his BEng and MSc from Shanghai Jiao Tong University (SJTU) in 2002 and 2004, respectively, and his PhD in Materials Science in 2008 from Delft University of Technology (TU Delft), The Netherlands. Prof. Huang’s research interests focus on two areas: (1) fundamentals of microstructure-property relationship and phase transformation of advanced steels and alloys, and (2) development of lightweight materials for automotive applications.

Prof. Huang has published 130+ SCI journal papers on top international journals in the field such as Science, Science Advances, Acta Materialia etc. Huang is the Editor, Associated Editor, Editorial Board Member of several international journals. Prof. Huang is a Fellow of IMMM and Member of Hong Kong Young Academy of Sciences. Prof. Huang received the prestigious Xplorer Prize 2021, and is named the Top 1% Most Cited Researcher by Clarivate Analytics.

Program Speaker Topic and Featured Program Summary
Prof. Huang received his BEng and MSc from Shanghai Jiao Tong University (SJTU) in 2002 and 2004, respectively, and his PhD in Materials Science in 2008 from Delft University of Technology (TU Delft), The Netherlands. Prof. Huang’s research interests focus on two areas: (1) fundamentals of microstructure-property relationship and phase transformation of advanced steels and alloys, and (2) development of lightweight materials for automotive applications.
Question
Revisit TWIP and TRIP Effects on Strain Hardening of High-strength Steels
Answer

High strength steels are widely used in various industries. Understanding the strain hardening mechanism of high strength steel plays a key role on the development of new class of high strength steel. The first part of the present work revisit the twinning-induced plasticity (TWIP) effect on the strain hardening mechanism of TWIP steel. It is found that TWIP effect has trivial effect on the strain hardening of TWIP steel. Instead, carbon-induced high dislocation in TWIP steel is the major mechanism responsible for the high strain hardening of TWIP steels. The second part revisit the TRIP effect on strain hardening of TRIP-assisted steels at high-strain-rate deformation. During high-strain-rate deformation, martensitic transformation does occur, but the strain hardening rate is still low, indicating that TRIP effect does not provide strain hardening behaviour at high-strain rate. Further investigation indicates that the reason for this abnormal TRIP effect at high strain rate could be attribute to the critical role of interstitial carbon played in the TRIP effect.

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