Investigation on coaxial visual characteristics of molten pool in laser-based directed energy deposition of AISI 316L steel

• Published in: Journal of materials processing technology Vol. 290; p. 116996
• Main Authors: Tang, Zi-jue, Liu, Wei-wei, Zhu, Li-na, Liu, Zhi-chao, Yan, Zhao-rui, Lin, Dong, Zhang, Zhao, Zhang, Hong-Chao
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.2021; Elsevier BV
• Subjects: Adaptive control; Additive manufacturing; Austenitic stainless steels; Component reliability; Conduction heating; Conductive heat transfer; Deposition; Directed energy deposition; Laser applications; Laser cladding; Melt pools; Metallurgical analysis; Molten pool; Monitoring; Monolayers; Multilayers; Visual characteristics; Visual characteristics; Molten pool; Additive manufacturing; Laser cladding; Directed energy deposition

•Molten pool can be divided into three regions to describe LDED process.•Coaxial visual characteristics can reflect metallurgical behaviors of molten pool.•There is a definite relationship between visual and temperature characteristics.•Visual characteristics can be used to monitor process state and...