Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing

29Citations
Citations of this article
61Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

Bimetallic wire arc additive manufacturing (AM) has traditionally been limited to depositions characterized by single planar interfaces. This study demonstrates a more complex radial interface concept, with in situ mechanical interlocking and as-built properties suggesting a prestressed compressive effect. A 308 L stainless core is surrounded by a mild steel casing, incrementally maintaining the interface throughout the Z-direction. A small difference in the thermal expansion coefficient between these steels creates residual stresses at their interface. X-ray diffraction analysis confirms phase purity and microstructural characterization reveals columnar grain growth independent of layer transitions. Hardness values are consistent with thermal dissipation characteristics, and the compressive strength of the bimetallic structures shows a 33% to 42% improvement over monolithic controls. Our results demonstrate that biomimetic radial bimetallic variation is feasible with improved mechanical response over monolithic compositions, providing a basis for advanced structural design and implementation using arc-based metal AM.

Cite

CITATION STYLE

APA

Squires, L., Roberts, E., & Bandyopadhyay, A. (2023). Radial bimetallic structures via wire arc directed energy deposition-based additive manufacturing. Nature Communications, 14(1). https://doi.org/10.1038/s41467-023-39230-w

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free