Compositionally graded SS316 to C300 Maraging steel using additive manufacturing

A. Ben-Artzy; A. Reichardt; J.-P. Borgonia; R.P. Dillon; B. McEnerney; A.A. Shapiro; P. Hosemann

Materials & Design (Mar 2021)

Compositionally graded SS316 to C300 Maraging steel using additive manufacturing

A. Ben-Artzy,
A. Reichardt,
J.-P. Borgonia,
R.P. Dillon,
B. McEnerney,
A.A. Shapiro,
P. Hosemann

Affiliations

A. Ben-Artzy: Ben-Guriyon University, Material engineering Dep., POB 653, Beer-Sheva, 84105, Israel.
A. Reichardt: University of California at Berkeley, Department of Nuclear Engineering, CA 94720, USA
J.-P. Borgonia: P.Jetropulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
R.P. Dillon: P.Jetropulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
B. McEnerney: P.Jetropulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
A.A. Shapiro: P.Jetropulsion Laboratory, California Institute of Technology, Pasadena, CA, USA
P. Hosemann: University of California at Berkeley, Department of Nuclear Engineering, CA 94720, USA; Lawrence Berkeley National Laboratory, Material Science Division, CA, 94720, USA; Corresponding author at: Ben-Guriyon University, Material engineering Dep., POB 653, Beer-Sheva, 84105, Israel.

Journal volume & issue: Vol. 201
p. 109500

Abstract

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Joining of dissimilar metals is required for numerous applications in industries such as chemical, energy and automotive. It is challenging due to differences in melting point, density, and thermal expansion of the metals being joined. Common welding techniques involve limiting melting and solidification to a narrow area leading to high thermal stresses and potentially brittle intermetallic phases. Furthermore, the geometric complexity of these welded joints can be rather limited. Additive Manufacturing (AM) presents new techniques for joining of dissimilar metals. One of the emerging methods is the building of functionally graded parts using Directed Energy Deposition (DED) to spatially vary composition. In this paper, a SS316 L and C300 maraging steel couple were joined by DED and heat treated. 13 discrete composition layers were selected using metallurgical considerations, in order to ensure a smooth transition in properties and microstructure. The mechanical properties of the as-built joints were found to be similar to the SS part and no intermetallic phases were found in the interface.

Published in Materials & Design

ISSN: 0264-1275 (Print); 1873-4197 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/materials-and-design

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