主讲人：陈子斌，香港理工大学助理教授

时间：2025年5月29日  10:00

地 点：三一大楼506

报告摘要：

Additive manufactured Ti alloys have been extensively studied and used widely inmany industries.For a long time,oxygen has been referred to as the 'kryptonite'to Ti,capable of invoking a strong hardening effect but resulting in dramatic embrittlement.Here,we demonstrate that the precision control of oxygen addition can significantlybenefit the mechanical properties of additive manufacturing Ti alloys.

On the one hand,the oxygens could be incorporated into an additive manufacturedT1-6Al-4V alloy to improve its mechanical properties by forming an oxygen-containingFCC solid solution phase.It was revealed that the oxygen-stabilized FCC-phasedramatically enhances the strength and ductility of the material.On the other hand,theintroduction of oxygen in Ti-Fe alloys during additive manufacturing can lead tounexpected performance,in which the interstitial oxygen complex gathers near grainboundaries and impedes dislocation motion inside the material,significantly improvingthe strength of the alloy.These results provide a significant step towards fabricating low-cost and high-performance alloys using additive manufacturing.

主讲人简介：

他主要利用先进电子显微学技术研究先进铁电功能材料以及增材制造金属材料的基础科学与工程问题。陈子斌博士在新材料成分设计、微结构表征、力学性能测试等方面拥有良好的科研基础。陈子斌博士的研究团队先后承担多个国际化基金项目，其中包括澳大利亚研究协会基金项目(Australian Research Councile),美国海军实验室全球计划基金项目(United State of America Office of Naval Research Global),香港研究资助局(Hong KongResearch Grant Council),中国国家自然基金(National Natural Science Foundation of China)获得资金共计超过500万元。陈子斌博士在多个国际期刊，包括Nature.Nature Materials,Science Advances,Nature Communications,Physical Review Letters.Materials Today,ActaMaterialia,Additive Manufacturing,以及Materials Research Letters发表了多篇高水平论文。陈子斌博士现担任国际学术期刊《Microstructures》以及《Materials Research Letters》青年编委，同时担任多个学术期刊的审稿人，包括《Nature Communications》, 《PhysicalReview Letters》,《Advanced Functional Materials》等。曾获得香港理工大学青年创新研究奖(2022),Ross Coffin Purdy Award(美国陶瓷协会)(2020),以及中国优秀自费留学生(2018)等荣誉。