Texture evolution in stainless steel processed by selective laser melting and annealing

Fergani, Omar; Brøtan, Vegard; Bambach�, Markus; Pérez‐Prado, M.T.

doi:10.1080/02670836.2018.1523518

Cited by 25 publications

(9 citation statements)

References 46 publications

(160 reference statements)

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“…The HT1 and HT2 samples were heat treated at 650 • C and 1050 • C respectively, and the REF sample served as a reference without any further treatment. The temperatures were selected according to the results of previous research, where annealing at 650 • C resulted in residual stress reduction and partial redistribution of small particles of secondary phases in microstructure [48]. The same effect was confirmed in this investigation, and in addition, changes in the relief of the individual melt pools were detected in the microstructure.…”

Section: Discussionsupporting

confidence: 80%

“…The same effect was confirmed in this investigation, and in addition, changes in the relief of the individual melt pools were detected in the microstructure. The annealing treatment was previously used in some research [48][49][50] for complete structure homogenization and residual stress reduction. Metallographic observation also confirmed complete melt pools reliefs disappearing and only the presence of equiaxial austenitic grains in material microstructure.…”

Section: Discussionmentioning

confidence: 99%

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Complex Corrosion Properties of AISI 316L Steel Prepared by 3D Printing Technology for Possible Implant Applications

et al. 2020

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This paper deals with the investigation of complex corrosion properties of 3D printed AISI 316L steel and the influence of additional heat treatment on the resulting corrosion and mechanical parameters. There was an isotonic solution used for the simulation of the human body and a diluted sulfuric acid solution for the study of intergranular corrosion damage of the tested samples. There were significant microstructural changes found for each type of heat treatment at 650 and 1050 °C, which resulted in different corrosion properties of the tested samples. There were changes of corrosion potential, corrosion rate and polarization resistance found by the potentiodynamic polarization method. With regard to these results, the most appropriate heat treatment can be applied to applications with intended use in medicine.

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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Complex Corrosion Properties of AISI 316L Steel Prepared by 3D Printing Technology for Possible Implant Applications

et al. 2020

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“…SLM, unlike SLS, is difficult to manage because melting the powder particles requires a high energy input from the laser beam (Papadakis et al, 2018). Concerning the quality aspects, SLM is a proven technology where parts are manufactured with high density (Lin et al, 2019), which can be further processes as any welding part like heat treatment processes (Fergani et al, 2018a;Fergani et al, 2018b) or hybrid manufacturing (Costa et al, 2021;Bambach et al, 2020bBambach et al, , 2021. On the other hand, the tolerance and surface finishes are limited.…”

Section: Selective Laser Meltingmentioning

confidence: 99%

Multimaterial powder bed fusion techniques

Mehrpouya

Tuma

Vaneker

et al. 2022

RPJ

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Purpose This study aims to provide a comprehensive overview of the current state of the art in powder bed fusion (PBF) techniques for additive manufacturing of multiple materials. It reviews the emerging technologies in PBF multimaterial printing and summarizes the latest simulation approaches for modeling them. The topic of “multimaterial PBF techniques” is still very new, undeveloped, and of interest to academia and industry on many levels. Design/methodology/approach This is a review paper. The study approach was to carefully search for and investigate notable works and peer-reviewed publications concerning multimaterial three-dimensional printing using PBF techniques. The current methodologies, as well as their advantages and disadvantages, are cross-compared through a systematic review. Findings The results show that the development of multimaterial PBF techniques is still in its infancy as many fundamental “research” questions have yet to be addressed before production. Experimentation has many limitations and is costly; therefore, modeling and simulation can be very helpful and is, of course, possible; however, it is heavily dependent on the material data and computational power, so it needs further development in future studies. Originality/value This work investigates the multimaterial PBF techniques and discusses the novel printing methods with practical examples. Our literature survey revealed that the number of accounts on the predictive modeling of stresses and optimizing laser scan strategies in multimaterial PBF is low with a (very) limited range of applications. To facilitate future developments in this direction, the key information of the simulation efforts and the state-of-the-art computational models of multimaterial PBF are provided.

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“…Typical grain morphologies of equiaxed ne grain and columnar grain were observed in 316L and Inconel region, while a visible grain coarsening transition region appeared between these two regions, and the average grain size were calculated to be 0.96 µm, 3.13 µm and 28.5 µm along the building direction. The coarsened grains proved to be the result of continued growth of 316L steel grains, which was attributed to the re-melting and recrystallization caused by the heat input effect when forming the Inconel 718 part and the continued growth of the grains caused by the temperature gradient and cooling rate declining [42] and nally, exacerbating the weakening of the interface performance.…”

Section: Phase and Microstructure Analysismentioning

confidence: 99%

Tailored microstructure and robust joint of Inconel 718/316L bimetallic multi-material fabricated by selective laser melting

Wen

Chen

Che

et al. 2020

Preprint

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In this study, selective laser melting (SLM) technology was used to fabricate Inconel 718/316L bimetallic multi-material with robust bonding strength, and a deep insight into the microstructural morphology, mechanical property and its strengthening mechanism of the joint was taken. The transition region with a wide of approximately 150 μm was defined and showed a dominating columnar region which was embedded in dispersed Laves phase occupied the molten of Inconel 718 closed to the joint. X-ray diffraction (XRD) pattern detected the strong peaks of γ', γ'' and a weaker peak of d phase precipitates. Electron backscatter diffraction (EBSD) analysis showed that a distinct grain coarsened region existing and Inconel 718 region had a strong fabric texture with a <001>// Z (BD) orientation. The shear strength of the as-built joint was calculated to be 449.5 MPa, which was comparable to the nickel/steel multi-materials formed by other traditional processing technologies.

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Texture evolution in stainless steel processed by selective laser melting and annealing

Cited by 25 publications

References 46 publications

Complex Corrosion Properties of AISI 316L Steel Prepared by 3D Printing Technology for Possible Implant Applications

Complex Corrosion Properties of AISI 316L Steel Prepared by 3D Printing Technology for Possible Implant Applications

Multimaterial powder bed fusion techniques

Tailored microstructure and robust joint of Inconel 718/316L bimetallic multi-material fabricated by selective laser melting

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