The Development of Additive Manufactured Advanced Materials: From Microstructural Evolution to Industrial Applications

Title

The Development of Additive Manufactured Advanced Materials: From Microstructural Evolution to Industrial Applications

Speaker

Prof. Heng Rao (Ji Hua Laboratory, Advanced Manufacturing Science and Technology Guangdong Laboratory)

Host

Prof. Yuanshen Qi (GTIIT, Materials Science and Engineering)

Time and Location

Sep. 30, 2022, Friday, 10:00am-11:00am(China Time), E508 (Education building, 5th floor), On-Site

Language

English

Abstract

Additive manufacturing, also known as 3D printing, can realize the integrated rapid manufacturing of any complex configuration, subvert the traditional product design and manufacturing process, drive the transformation and upgrading of traditional industries, and strongly support a new round of manufacturing industry revolution. However, with the increasing popularity of additive manufacturing technology, the demand for low-cost and high-performance materials has become increasingly prominent. For traditional aviation light alloys, especially Al-Si alloys, issues such as high laser energy absorption rate and large molten pool size formed during high temperature laser melting directly determine the formability, defect morphology and mechanical properties of large size industrial components. Therefore, breaking through the barriers of traditional material performance enhancement and developing a new alloy material system with high strength, stability and processability are of vital importance to the sustainable development of this novel and challenging industry. This seminar will focus on the overview of metal 3D printing and the technical problems faced by the current research on additive manufactured advanced materials. The process parameter optimization, defect formation mechanisms and post-treatment procedures of selective laser melted (SLMed) aluminum alloys will be discussed in details. The seminar will also investigate the research contents of SLMed microstructure, tensile and fatigue properties in depth, and look forward to the future development directions of metal 3D printing technology.

Biography

Dr. Heng Rao is currently the Associate Professor of Jihua Laboratory (Advanced Manufacturing Science and Technology Guangdong Laboratory) and the director of 3D printing process research and development group of Institute of Advanced Additive Manufacturing. Dr. Rao completed his Bachelor of Engineering (with First Class Honours) and PhD degrees both at Monash University, Australia, in 2013 and 2017, respectively. He then continued working as a Postdoctoral Research Fellow at Monash Centre for Additive Manufacturing (MCAM), and Future Industry Institute (FII) at the University of South Australia. In 2014, He participated in printing the world’s first full-size small 3D printing jet turbine engine. In 2018, he participated in two international collaborative research projects: developing 3D printed aluminum alloy air-intake components with Aero Engine Corporation of China (AECC), and developing 3D printed aluminum alloy hatch hinge arm within China’s first self-developed C-919 civil aircraft with Commercial Aircraft Corporation of China Ltd. (COMAC). In the past five years, all his papers were cited for more than 700 times, with one international invention patent granted. His relevant achievements have been successfully transformed in Safran France since 2017, replacing conventional manufacturing methods with reliable 3D printing techniques. At the end of 2020, he started working at Jihua Laboratory after granting Foshan New Leading Talents Introduction Plan.