Weaver, J.M.; Linn, J.R.; Miles, M.P. Interface Joint Strength between SS316L Wrought Substrate and Powder Bed Fusion Built Parts. Materials2021, 14, 3041.
Weaver, J.M.; Linn, J.R.; Miles, M.P. Interface Joint Strength between SS316L Wrought Substrate and Powder Bed Fusion Built Parts. Materials 2021, 14, 3041.
Weaver, J.M.; Linn, J.R.; Miles, M.P. Interface Joint Strength between SS316L Wrought Substrate and Powder Bed Fusion Built Parts. Materials2021, 14, 3041.
Weaver, J.M.; Linn, J.R.; Miles, M.P. Interface Joint Strength between SS316L Wrought Substrate and Powder Bed Fusion Built Parts. Materials 2021, 14, 3041.
Abstract
Metal powder bed fusion (PBF) additive manufacturing (AM) builds metal parts layer by layer upon a substrate material. The strength of this interface between substrate and printed material is important to characterize, especially in applications where the substrate is retained and included in the finished part. This paper studied the tensile and torsional strengths of wrought and additively manufactured (through PBF) SS316L and compared them to specimens composed of half wrought material and half PBF material. The PBF specimens consistently exhibited higher strength and lower ductility than the wrought specimens. The hybrid PBF/wrought specimens performed similarly to the wrought material. In no specimens did any failure appear to occur at or near the interface between wrought substrate and PBF material. In addition, most of the deformation in the PBF/wrought specimens appeared to be limited to the wrought portion of the specimens. These results are consistent with microscopy showing smaller grain size in the PBF material, which often leads to increased strength in SS316L due to the Hall-Petch relationship.
Keywords
powder bed fusion; additive manufacturing; ss316l; interface strength
Subject
Engineering, Automotive Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
