In-situ synthesis of oxygen free SiC fibers and ropes by electron beam melting

2007 ◽  
Vol 61 (4-5) ◽  
pp. 956-959 ◽  
Author(s):  
M. Ahmad ◽  
J.I. Akhter ◽  
G. Ali ◽  
M. Akhter
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
In Situ Synthesis ◽  
Sic Fibers

In situ synthesis of a binary Ti–10at% Nb alloy by electron beam melting using a mixture of elemental niobium and titanium powders

2020 ◽  
Vol 282 ◽  
pp. 116646 ◽  
Author(s):  
Maria A. Surmeneva ◽  
Andrey Koptyug ◽  
Dmitriy Khrapov ◽  
Yuriy F. Ivanov ◽  
Tatiana Mishurova ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
In Situ Synthesis ◽  
Titanium Powders

scholarly journals Nanoscaled eutectic NiAl-(Cr,Mo) composites with exceptional mechanical properties processed by electron beam melting

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Andreas Förner ◽  
S. Giese ◽  
C. Arnold ◽  
P. Felfer ◽  
C. Körner ◽  
...  
Keyword(s):  
Electron Beam ◽  
High Temperature ◽  
Electron Beam Melting ◽  
Lamellar Microstructure ◽  
High Hardness ◽  
Additive Process ◽  
In Situ Composites ◽  
Selective Electron Beam Melting ◽  
Very High

Abstract Eutectic NiAl-(Cr,Mo) composites are promising high temperature materials due to their high melting point, excellent oxidation behavior and low density. To enhance the strength, hardness and fracture toughness, high cooling rates are beneficial to obtain a fine cellular-lamellar microstructure. This can be provided by the additive process of selective electron beam melting. The very high temperature gradient achieved in this process leads to the formation of the finest microstructure that has ever been reported for NiAl-(Cr,Mo) in-situ composites. A very high hardness and fracture toughening mechanisms were observed. This represents a feasibility study towards additive manufacturing of eutectic NiAl-(Cr,Mo) in-situ composites by selective electron beam melting.

Realizing a full volume component by in-situ welding during electron beam melting process

2018 ◽  
Vol 22 ◽  
pp. 375-380 ◽  
Author(s):  
Pan Wang ◽  
Mui Ling Sharon Nai ◽  
Wai Jack Sin ◽  
Shenglu Lu ◽  
Baicheng Zhang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Electron Beam Melting ◽  
Melting Process ◽  
Electron Beam Melting Process ◽  
Full Volume

Benchmarking spatial resolution in electronic imaging for potential in-situ Electron Beam Melting monitoring

2019 ◽  
Vol 29 ◽  
pp. 100829 ◽  
Author(s):  
Hay Wong ◽  
Derek Neary ◽  
Eric Jones ◽  
Peter Fox ◽  
Chris Sutcliffe
Keyword(s):  
Electron Beam ◽  
Spatial Resolution ◽  
Electron Beam Melting ◽  
Electronic Imaging

scholarly journals Nanostructuring of Nb-Si-Cr Alloys by Electron Beam Melting to Improve the Mechanical Properties and the Oxidation Behavior

2021 ◽  
Author(s):  
A. Förner ◽  
J. Vollhüter ◽  
D. Hausmann ◽  
C. Arnold ◽  
P. Felfer ◽  
...  
Keyword(s):  
Electron Beam ◽  
Additive Manufacturing ◽  
Electron Beam Melting ◽  
Room Temperature ◽  
Single Layer ◽  
Atom Probe ◽  
Cooling Rates ◽  
High Cooling Rates ◽  
Very High

AbstractMaterials processed by additive manufacturing often exhibit a very fine-scaled microstructures due to high cooling rates in the process. In this study, single-layer surface electron beam melting is used to create very high cooling rates similar to additive manufacturing processes to investigate the resulting microstructure. In the case of Nb-Si-Cr in-situ composites, a nano-scaled eutectic microstructure is beneficial for improving the mechanical and oxidational properties. Fast solidification results in the formation of supersaturated phases of Nbss and Cr2Nb with phase diameters down to 10 nm as well as in the stabilization of the metastable Nb9(Cr,Si)5 phase at room temperature. After processing with different solidification rates, the decomposition of the Nb9(Cr,Si)5 phase has been studied in detail with atom probe microscopy. The stabilization of mixed silicide phases by electron beam melting shows a new pathway for improving hardness and enhancing oxidation resistance of nanostructured eutectic in-situ composites, by which the inherent weaknesses of Nb-Si-Cr can be overcome without further alloying elements. Graphical Abstract

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