A1 Journal article (refereed), original research

Characterization of part deformations in laser powder bed fusion of stainless steel 316L


Open Access publication

Publication Details
Authors: Riikonen Niko, Piili Heidi
Publisher: Elsevier: Creative Commons Attribution Non-Commercial No-Derivatives License
Publication year: 2020
Language: English
Related Journal or Series Information: Procedia CIRP
Journal acronym: Procedia CIRP
Volume number: 94
Start page: 161
End page: 166
Number of pages: 6
ISSN: 2212-8271
JUFO-Level of this publication: 1
Open Access: Open Access publication

Abstract

Laser powder bed fusion (L-PBF) is a suitable manufacturing method for end-use complicated metal parts. However, cyclic thermal load belongs to the nature of the process and it creates residual stresses in the parts due to their subsequent thermal expansions and contractions. These residual stresses make the parts exposed to deformations. Aim of this study was to recognize why deformations occur in parts made by L-PBF. Deformations of stainless steel 316L parts were examined experimentally. As a conclusion, building orientation is crucial factor in generation of deformations in L-PBF. Each test sample that had deformation, could be manufactured without deformation by adjusting the orientation. Parts built horizontally flat were the most vulnerable to have deformation.


Projects
Teollisuuden 3D tulostus (Me3DI) (01/09/2018 - 31/12/2020)

Last updated on 2020-22-09 at 07:30