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Title: Selective laser melting of stainless steel 316L with low porosity and high build rates
Authors: Sun, Zhongji
Tan, Xipeng
Tor, Shu Beng
Yeong, Wai Yee
Keywords: Transmission electron microscopy
Additive manufacturing
Selective laser melting
Stainless steel 316L
Issue Date: 2016
Source: Sun, Z., Tan, X., Tor, S. B., & Yeong, W. Y. (2016). Selective laser melting of stainless steel 316L with low porosity and high build rates. Materials and Design, 104, 197-204.
Series/Report no.: Materials and Design
Abstract: The present study employs fast scanning speeds to fabricate high-density stainless steel 316L (SS316L) parts via selective laser melting (SLM). It aims to improve the production rate while maintaining a low porosity for the SLM-built parts. Density values of > 99% were recorded for all the fabricated samples in this study. The scanning speed of the laser could be much improved due to the use of 380 W power laser. The overall build rate in this study is supposed to be enhanced by ~ 72% as compared to commonly used processing parameters. Detailed microstructural characterization was carried out in order to obtain an in-depth understanding of the microstructure of SLM-built SS316L. The microhardness of built parts is between 213 and 220 HV, which is much higher than that of the standard annealed counterpart of ~ 155 HV. This study provides an insight on how to improve SLM build rates without any loss of parts' density and mechanical properties.
ISSN: 0261-3069
DOI: 10.1016/j.matdes.2016.05.035
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2016 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Materials and Design, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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