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On the Heat Treatment of Selective-Laser-Melted 316L

  • The effect of heat treatment at various temperatures (650, 850, 1050, and 1100°C) and dwell times (10 min and 1 h) on the metallurgical and microstructural evolution as well as on the related tensile properties of stainless steel 316L processed by selective laser melting (SLM) has been systematically evaluated. The metallurgical and microstructural features such as defects, stability of the columnar–cellular structure and substructure, second phase particles, and phase transformation imparted by SLM and heat treatment have been discussed. It has been shown that the processing conditions specific to SLM significantly alter the kinetics of phase evolution compared to standard welding techniques which affects the accuracy of the prediction. The influence of these characteristics on tensile properties and hardness was elucidated. It was disclosed that with increasing heat treatment temperature there was a gradual increase in elongation but a decrease in strength related to the dislocation density and the development of theThe effect of heat treatment at various temperatures (650, 850, 1050, and 1100°C) and dwell times (10 min and 1 h) on the metallurgical and microstructural evolution as well as on the related tensile properties of stainless steel 316L processed by selective laser melting (SLM) has been systematically evaluated. The metallurgical and microstructural features such as defects, stability of the columnar–cellular structure and substructure, second phase particles, and phase transformation imparted by SLM and heat treatment have been discussed. It has been shown that the processing conditions specific to SLM significantly alter the kinetics of phase evolution compared to standard welding techniques which affects the accuracy of the prediction. The influence of these characteristics on tensile properties and hardness was elucidated. It was disclosed that with increasing heat treatment temperature there was a gradual increase in elongation but a decrease in strength related to the dislocation density and the development of the microstructure.show moreshow less

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Metadaten
Author: Iuliia Morozova, Christian Kehm, Aleksei ObrosovORCiD, Yitong YangORCiD, Kamal Uddin Mohammad Miah, Elena Uludintceva, Sebastian Fritzsche, Sabine WeißORCiDGND, Vesselin MichailovORCiDGND
DOI:https://doi.org/10.1007/s11665-022-07404-0
ISSN:1544-1024
Title of the source (English):Journal of Materials Engineering and Performance
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2023
Tag:316L; SLM; grain structure; phase evolution; tensile properties
Volume/Year:32 (2023)
Issue number:10
First Page:4295
Last Page:4305
Faculty/Chair:Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Füge- und Schweißtechnik
Fakultät 3 Maschinenbau, Elektro- und Energiesysteme / FG Metallkunde und Werkstofftechnik
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