Additive manufacturing of nickel-based superalloy Inconel 718 by selective electron beam melting: Processing window and microstructure

2014 ◽  
Vol 29 (17) ◽  
pp. 1987-1996 ◽  
Author(s):  
Harald Ernst Helmer ◽  
Carolin Körner ◽  
Robert Friedrich Singer
Keyword(s):  
Electron Beam ◽  
Additive Manufacturing ◽  
Inconel 718 ◽  
Electron Beam Melting ◽  
Processing Window ◽  
Nickel Based Superalloy ◽  
Selective Electron Beam Melting ◽  
Image Position

Abstract

Microgeometry of the surface of electron beam additive manufacturing products. Selective electron beam melting

2021 ◽  
pp. 408-418
Author(s):  
E.V. Krasnova ◽  
Yu.A. Morgunov ◽  
B.P. Saushkin
Keyword(s):  
Electron Beam ◽  
Additive Manufacturing ◽  
Physical Model ◽  
Electron Beam Melting ◽  
Metallurgical Process ◽  
Additive Technology ◽  
Selective Electron Beam Melting ◽  
Surface Microgeometry ◽  
Microstructure Of The Material

The results of the analysis of works related to the formation of surface microgeometry in the process of selective electron-beam melting are presented, and the physical model of this process is refined. The developing additive technology of selective electron-beam alloying and the directions in which its research is carried out, in particular, the analysis of the metallurgical process, the formation of the microstructure of the material, the formation of microstructure defects, are described. The roughness of the surface of products obtained by the SEBM technology, as well as the microgeometry of surfaces and the mechanisms of its formation, depending on various parameters of the process, are considered.

Thermal effects on microstructural heterogeneity of Inconel 718 materials fabricated by electron beam melting

2014 ◽  
Vol 29 (17) ◽  
pp. 1920-1930 ◽  
Author(s):  
William J. Sames ◽  
Kinga A. Unocic ◽  
Ryan R. Dehoff ◽  
Tapasvi Lolla ◽  
Sudarsanam S. Babu
Keyword(s):  
Electron Beam ◽  
Thermal Effects ◽  
Inconel 718 ◽  
Electron Beam Melting ◽  
Microstructural Heterogeneity ◽  
Image Position

Abstract

Effect of Powder Reuse Times on Additive Manufacturing of Ti-6Al-4V by Selective Electron Beam Melting

JOM ◽  
2015 ◽  
Vol 67 (3) ◽  
pp. 555-563 ◽  
Author(s):  
H. P. Tang ◽  
M. Qian ◽  
N. Liu ◽  
X. Z. Zhang ◽  
G. Y. Yang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Additive Manufacturing ◽  
Electron Beam Melting ◽  
Selective Electron Beam Melting

scholarly journals Fabrication of Single Crystals through a µ-Helix Grain Selection Process during Electron Beam Metal Additive Manufacturing

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 313 ◽  
Author(s):  
Martin R. Gotterbarm ◽  
Alexander M. Rausch ◽  
Carolin Körner
Keyword(s):  
Electron Beam ◽  
Additive Manufacturing ◽  
Single Crystals ◽  
Electron Beam Melting ◽  
Selection Process ◽  
Powder Bed ◽  
Grain Structures ◽  
Selective Electron Beam Melting ◽  
Columnar Grain ◽  
Metal Additive

Selective Electron Beam Melting (SEBM) is a powder bed-based additive manufacturing process for metals. As the electron beam can be moved inertia-free by electromagnetic lenses, the solidification conditions can be deliberately adjusted within the process. This enables control over the local solidification conditions. SEBM typically leads to columnar grain structures. Based on numerical simulation, we demonstrated how technical single crystals develop in IN718 by forcing the temperature gradient along a µ-Helix. The slope of the µ-Helix, i.e., the deviation of the thermal gradient from the build direction, determined the effectiveness of grain selection right up to single crystals.

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