主题：Materials and Manufacturing of Gas Turbine Blades:From Physics-Based to Data-Driven Modelling

 

主讲人：董洪标

英国皇家工程院院士, 英国伯明翰大学125th Anniversary Chair 特聘教授，全英华人教授协会主席，全球海外华人材料学者学会副主席

 

时间：2025年12月6日(周六)14:00

地点：甬江实验室创园A栋208会议室

 

报告摘要：

In this talk, I will outline the material requirements for single-crystal gas turbine blades and the resulting need for tightly controlled solidification microstructures. In directionally solidified alloys, the length scale and regularity of dendritic patterns, strongly influence final properties. I will introduce a supervised machine-learning method, SLPS, which automatically quantifies local solidification characteristics from microstructural images, providing a general image-driven framework for characterising directionally solidified dendrite structures. We found that hexagonal packing solidification structure adapts more readily and achieves finer grain than square packing. These results offer a mechanistic basis for process design that promote hexagonally ordered, close-packed solidification structures with finer grains, reduced microsegregation and defect-grain formation, and shortened solution heat-treatment times.

 

报告人介绍：

董洪标教授先后在北京科技大学获得冶金工程学士、硕士学位，于英国牛津大学材料系取得博士学位，随后在牛津大学、帝国理工学院完成博士后研究。长期致力于智能制造，金属材料加工理论及模拟仿真，镍基高温合金，钢铁冶金，铸造，焊接和金属增材制造等领域研究，尤其在燃气涡轮叶片核心技术领域造诣深厚——建立多尺度多物理场凝固模型，首次实现凝固组织微观尺度数字模拟，揭示了单晶叶片表面缺陷和选晶的机制。董院士在推动国际合作方面成效卓著，创建莱斯特 - TWI 材料创新中心，以及中英、英印等跨国科研平台，为全球高端制造的学术交流和人才培养做出了重要贡献。