Laser Direct Energy Deposition 3D Printing of Superalloys

Laser Direct Energy Deposition (DED) 3D Printing of Superalloys synthesizes a decade of pioneering translational research. The book systematically tackles critical challenges in DED of superalloys towards industrial applications, including process modeling, microstructure control, defect suppression, and mechanical property optimization. It also presents a suite of innovative methodologies, such as physics-informed neural networks, gradient laser power deposition, ultrasonic vibration-assisted deposition, and heterogeneous alloy doping. Backed by validated models, the book serves as an indispensable resource. It is tailored for researchers, engineers, and graduate students aiming to master DED technology and its applications in aerospace, energy, and high-value component manufacturing.

Prof. Xiaoqi Chen received his PhD from University of Liverpool in 1989. He is the Dean of Shien-Ming Wu School of Intelligent Engineering, South China University of Technology (SCUT). Prior to joining SCUT, he was Deputy Director of Manufacturing Futures Research Institute, Swinburne University of Technology (2019-2022); Director of Mechatronics Engineering, University of Canterbury (2006-2019); Senior Scientist, Singapore Institute of Manufacturing Technology (1992-2006). His research focuses on advanced materials processing, robotics, and autonomous systems. Dr. Ze Chai co-supervised postgraduate research as a postdoctoral fellow during this book's preparation. He served as an Assistant Researcher at the Shanghai Institute of Applied Physics, Chinese Academy of Sciences. Currently he is Assistant Professor in the School of Aerospace Engineering and Applied Mechanics at Tongji University. His research focuses on the advanced manufacturing of high-performance materials, and physical and chemical mechanisms of multi-scale structural evolution. Dr. Xiaoqiang Zhang received his doctoral degree from the School of Materials Science and Engineering at Shanghai Jiao Tong University. He is currently employed at the School of Materials Science and Engineering of Jiangsu University of Science and Technology. His primary research interests lie in the fields of additive manufacturing, laser cladding and welding for high-performance alloys, as well as the investigation of gradient materials and material strengthening and toughening mechanisms.

Preface. Overview of Additive Manufacturing. Additive Manufactured Superalloys and their Applications. Predicting 3D Temperature Field of Inconel 718 Multi-layer Deposition using Physics Informed Neural Network. Off-line Processing Parameter Optimization for Excellent Inconel 718 Deposition Shaping. DED Process Parameter Decision-Making Model. Tailoring Laves Phase and Mechanical Properties of Directed Energy Deposited Inconel 718 Thin-Wall via a Gradient Laser Power Method. Achieving Superior Mechanical Property of Inconel 718 Thin-Wall using Gradient-Laser-Power Deposition. Microstructure Characteristics and Mechanical Properties of Post Heat Treated Inconel 718 Thin-Wall. Ultrasonic Vibration Assisted Deposition of Inconel 718 Bulk Alloys: Microstructure, Deposition Process, and Mechanical Property. Cracking Mechanisms and Suppression of the -' Strengthen Nickel-based Superalloy During Additive Manufacturing. Depositing Inconel 738LC: Microstructure Characteristics and Cracking. Effects of Laser Deposition Processes on Crack Sensitivity for Depositing Inconel 738LC. L-DED of Hetero-Structured IN738+IN718 Alloys with Excellent Strength and Ductility. Index.