Microstructure and mechanical properties of Selective Laser Melted 18Ni-300 steel

By K. Kempen, E. Yasa, L. Thijs, Jean-Pierre Kruth, J. van Humbeeck. 2011

514 citations recorded by the source corpus.

Abstract Selective Laser Melting (SLM) is an Additive Manufacturing process in which a part is built in a layer by layer manner. A laser source selectively scans the powder bed according to the CAD data of the part to be produced. The high intensity laser beam makes it possible to completely melt the metal powder particles to obtain almost fully dense parts. In this work, the influence of process parameters in SLM (e.g. scan speed and layer thickness) and various age hardening treatments on the microstructure and mechanical properties of 18Ni-300 steel is investigated. It is shown that almost fully dense parts with mechanical properties comparable to those of conventionally produced maraging steel 300 can be produced by SLM.

Subfields: Automotive Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/29c07e23efff70ace4ad87e12ce28d32255f2792

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Citations in the corpus

Additive manufacturing of steels: a review of achievements and challenges (2020, methodology): “The increase in strength is attributed to aging during the LPBF process due to cyclic reheating of the metal as well as the fine resultant solidification structure [106, 161].”
Selective Laser Melting of Crack-Free High Density M2 High Speed Steel Parts by Baseplate Preheating (2014, background): “The martensite that is formed in 18Ni300 maraging steel is relatively soft and no cracking or delamination problems occur during SLM [2].”
Standardization in additive manufacturing: activities carried out by international organizations and projects (2015, background): “Kempen [6] also studied the influence of process parameters in selective laser melting (SLM) and various age hardening treatments on the microstructure and mechanical properties of 18Ni-300 steel, showing that this kind of part is almost comparable to those conventionally produced.”
Aging Behaviour and Mechanical Performance of 18-Ni 300 Steel Processed by Selective Laser Melting (2016, result): “, ASTM A 538, AMS 6514, and MIL-S-46850 standards) and in good agreement with literature data on SLMed type 300 maraging steel [10].”
Microstructural characterization and properties of selective laser melted maraging steel with different build directions (2018, background): “9 Standard Wrought [38] 1000–1170 760–895 6–15 35 Wrought aged [3,33] 1930–2050 1862–2000 5–7 52 Sci.”
Review of Powder Bed Fusion Additive Manufacturing for Metals (2021, unknown): “18Ni-300 steel [219,230] Laser 25–248 Columnar/Cellular/Dendritic TiO2 + Al2O3 + martensite + low austenite 1214 163 1–13”
The influence of aging temperature and aging time on the mechanical and tribological properties of selective laser melted maraging 18Ni-300 steel (2018, methodology): “In addition, the decomposition of Ni3(Mo, Ti) phases and consequent precipitation of Fe2Mo phase occurred at the same time, which also contributes to the austenite reversion [24,44].”
Steels in additive manufacturing: A review of their microstructure and properties (2020, background): “from 381 to 645 HV) and in tensile strength accompanied by a reduction in ductility is observed, as expected [119, 125,129,131].”