Combined effect of a spread powder particle size distribution, surface machining and stress-relief heat treatment on microstructure, tensile and fatigue properties of 316L steel manufactured by laser powder bed fusion

Nguejio, Josiane; Mokhtari, Morgane; Paccou, Elie; Baustert, Eric; Khalij, Leila; Hug, Éric; Bernard, Pierre; Boileau, Sébastien; Keller, Clément

doi:10.1007/s00170-023-11008-w

Cited by 3 publications

(1 citation statement)

References 66 publications

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“…However, due to many possible flaws in the production process, it is difficult to achieve the appropriate final quality. Depending on the application, any discrepancy between the microstructure and what is desired can be considered an anomaly (or a defect) [12,13]. When defects exist in components subject to dynamic loading, they affect not only their integrity but also their corrosion resistance [14].…”

Section: Defects In the Dmls Processmentioning

confidence: 99%

A Comprehensive Review on the Effect of Thermal Post Processing on DMLS Processed SS316L Components

Pawar,

Kulkarni

2024

MSF

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SS316L is an austenite-grade steel material offering a better strength-to-ductility ratio, higher corrosion resistance, and biocompatibility. In DMLS products, residual stresses are inevitable because of the thermal gradient involved in the process and the porosity that results from process limitations. As a result of these defects, the strength of the product is reduced and the quality of the product is compromised. The primary objective of this article is to offer an in-depth analysis of different heat treatment methods that are employed to achieve superior properties in products manufactured through DMLS processing. Thermal processing techniques include Hot Isostatic Pressing, Solution Heat Treatment, T6 heat treatment, Direct Aging Treatment, etc. Using thermal post-processing techniques, 99.99% of the porosity is eliminated, corrosion resistance is significantly increased, and mechanical properties are enhanced. This study examines the need for thermal post-processing, the methodology employed, and the property enhancements achieved by DMLS products. There are many factors affecting thermal post-processing, however, efforts have been made to review the details regarding thermal post-processing applied to SS316L material processed with direct metal laser sintering. Moreover, the specific methods for post-processing can be determined based on the product's intended application.

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Section: Defects In the Dmls Processmentioning

confidence: 99%