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|Title: ||Laser rapid manufacturing of bi-metallic tube with Stellite-21 and austenitic stainless steel|
|Authors: ||GANESH, P|
|Keywords: ||functionally graded materials|
|Issue Date: ||2009|
|Publisher: ||SPRINGER INDIA|
|Citation: ||TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS, 62(2), 169-174|
|Abstract: ||Fabrication of multi-material engineering components is one of the technologies to address diverse and conflicting functional requirements posed by rapid technological development. Bi-metallic tube is one such multi-material component with different materials on internal and outer surfaces. This paper briefs about fabrication of a bi-metallic tubular structure with an indigenously developed 3.5 kW CO(2) laser integrated with a beam delivery system, a 5-axis CNC work station along with a powder feeding sub-system. The bi-metallic tube was fabricated with cobalt based alloy Stellite 21 on inner diameter and type 316L stainless steel on the outer diameter. Besides, a stainless steel tube with an internal step of Stellite 21 was also fabricated. As-fabricated bi-metallic structure was structurally sound and carried desired transition in chemical composition and hardness across its wall thickness.|
|Appears in Collections:||Article|
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