Surface morphology of 321 stainless steel obtained by electron-beam wire-feed additive manufacturing technology

Калашникова, Т. А.; Khoroshko, E. S.; Чумаевский, А. В.; Филиппов, А. В.

doi:10.1063/1.5083357

Cited by 16 publications

(2 citation statements)

References 13 publications

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“…These factors play a crucial role in determining the morphology of the molten pool. To ensure favorable wetting behavior, the equilibrium contact angle between the metal powder and the substrate of 304 stainless steel was established at 45 • [26].…”

Section: Validation Example Of Wall Droplet Wetting Effect Modelmentioning

confidence: 99%

Numerical Simulation of Selective Laser Melting of 304 L Stainless Steel

Niu

et al. 2023

Metals

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This paper used the smoothed particle hydrodynamics (SPH) method to construct a three-dimensional mathematical model of the selective laser melting (SLM) process of 304 L austenitic stainless steel. Important driving force models for the melt pool in the SLM process were developed, including a surface tension model, a boundary normal-modified wetting effect model, a Marangoni shear force model, and a recoil pressure model. Meanwhile, the virtual particle boundary method prevented particles from flying over the solid boundary. Artificial viscosity, artificial stress, and artificial heat were added to correct the SPH equation, which provided a guarantee for the accuracy and speed of the numerical simulation of the SLM process. Finally, the temperature field and velocity field in the SLM process were explored according to the constructed mathematical model. The evolution mechanism in the melting process was analyzed, and the influence of different laser powers on the shape of the molten pool was mainly analyzed, which provided a reference for optimizing the laser parameters to reduce the surface roughness of the formed specimen.

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Section: Validation Example Of Wall Droplet Wetting Effect Modelmentioning

confidence: 99%

Numerical Simulation of Selective Laser Melting of 304 L Stainless Steel

Niu

et al. 2023

Metals

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“…Исходным материалом служили прутки суперсплава ЖС6У и подложка в виде листового проката из аустенитной стали 12Х18Н9Т с водяным охлаждением. Образцы получали на установке, описанной в работе [4]. В ходе выполнения работы были получены четыре образца.…”

Section: институт физики прочности и материаловедения со ран томскunclassified

OSOBENNOSTI OBRAZOVANIJa DEFEKTOV V IZDELII IZ ZhAROPROChNOGO SPLAVA NA OSNOVE NIKELJa, POLUChENNOM METODOM JeLEKTRONNOLUChEVOJ ADDITIVNOJ TEHNOLOGII

Guryanov¹

2019

International Workshop "Multiscale Biomechanics and Tribology of Inorganic and Organic Systems" ; Mezhdunarodnaja Konferencija

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Robust Metal Additive Manufacturing Process Selection and Development for Aerospace Components

Gradl

Tinker

Park

et al. 2022

J. of Materi Eng and Perform

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Metal additive manufacturing (AM) encapsulates the myriad of manufacturing processes available to meet industrial needs. Determining which of these AM processes is best for a specific aerospace application can be overwhelming. Based on the application, each of these AM processes has advantages and challenges. The most common metal AM methods in use include Powder Bed Fusion, Directed Energy Deposition, and various solid-state processes. Within each of these processes, there are different energy sources and feedstock requirements. Component requirements heavily affect the process determination, despite existing literature on these AM processes (often inclusive of input parameters and material properties). This article provides an overview of the considerations taken for metal AM process selection for aerospace components based on various attributes. These attributes include geometric considerations, metallurgical characteristics and properties, cost basis, post-processing, and industrialization supply chain maturity. To provide information for trade studies and selection, data on these attributes were compiled through literature reviews, internal NASA studies, as well as academic and industry partner studies and data. These studies include multiple AM components and sample build experiments to evaluate (1) material and geometric variations and constraints within the processes, (2) alloy characterization and mechanical testing, (3) pathfinder component development and hot-fire evaluations, and (4) qualification approaches. This article summarizes these results and is meant to introduce various considerations when designing a metal AM component.

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Surface morphology of 321 stainless steel obtained by electron-beam wire-feed additive manufacturing technology

Cited by 16 publications

References 13 publications

Numerical Simulation of Selective Laser Melting of 304 L Stainless Steel

Numerical Simulation of Selective Laser Melting of 304 L Stainless Steel

OSOBENNOSTI OBRAZOVANIJa DEFEKTOV V IZDELII IZ ZhAROPROChNOGO SPLAVA NA OSNOVE NIKELJa, POLUChENNOM METODOM JeLEKTRONNOLUChEVOJ ADDITIVNOJ TEHNOLOGII

Robust Metal Additive Manufacturing Process Selection and Development for Aerospace Components

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