On Apr. 22nd, at the invitation of Prof. Liao Guanglan of MSE, Dr. Wang Pan, research scientist of Singapore Institute of Manufacturing Technology, visited MSE, and gave a presentation titled “From Fundamentals of Materials Science to Industrial Applications”. The meeting was presided over by Prof. Liao Guanglan. Prof. Shi Tielin, Secretary of MSE, Dr. Zhang Fen, Vice Dean of MSE, Associate Prof. Lai Wuxing, Dr. Sun Bo, Dr. Liu Zhiyong, and some doctoral students of MSE attended the meeting.
Dr. Wang mainly introduced the mechanism and industrial application of the 3D printing technology, especially the basic problems of the application of additive manufacturing complex structure from the atomic level to the molding system. The relationship between the complex thermal cycle/history in additive manufacturing and the evolution of the microstructure of the molded parts is expounded, and the cause of anisotropy of microstructure and properties of molded parts is revealed.
In addition, Dr. Wang explained the formation reasons of the surface roughness of finished parts and proposed possible improvement methods. In a detailed analysis of the samples that need post-processing, Dr. Wang illuminated the residual stress of the molded parts as well as changes of the surface stress after post-processing, revealing influence of the surface treatment to mechanical and corrosion performance of additive manufactured components. These results provide valuable technical information and theoretical guidance to industry application of additive manufacturing, and have been used in aerospace and semiconductor industries.
After the presentation, Dr. Wang had an in-depth discussion with teachers and students at the meeting on the similarities and differences between electron beam 3D printing and laser 3D printing, as well as the technical challenges still faced by 3D printing technology.