scholarly journals Advances in gas-mediated electron beam-induced etching and related material processing techniques

2014 ◽  
Vol 117 (4) ◽  
pp. 1623-1629 ◽  
Author(s):  
Milos Toth
Keyword(s):  
Material Processing ◽  
Electron Beam ◽  
Related Material ◽  
Processing Techniques

scholarly journals Electron Beam Welding of Rolled and Laser Powder Bed Fused Inconel 718

2021 ◽  
Author(s):  
Akash Sali ◽  
Vivek Patel ◽  
James Hyder ◽  
David Hyder ◽  
Mike Corliss ◽  
...  
Keyword(s):  
Electron Beam ◽  
Heat Input ◽  
Inconel 718 ◽  
Electron Beam Welding ◽  
High Heat ◽  
Chemical Compositions ◽  
Minimum Requirement ◽  
Powder Bed ◽  
Processing Techniques

Abstract This paper explores the feasibility of welding Inconel 718 (IN718) and compares the quality of electron beam welded samples produced by rolling and laser-based powder bed fused (L-PBF). Electron beam heat input, varying in the range 175-300 J/mm, was the main parameter in welding. Microhardness, tensile properties, and fractography study using both optical and scanning electron microscopy were employed to analyze and compare the quality of the welded samples. Energy dispersive x-ray analysis was used to identify chemical compositions of different phases on the fractured surfaces. Large voids were observed at high heat inputs (≥ 213 J/mm). Excellent weld penetration was obtained and was proportional to the beam heat input. Both yield and tensile strength of the welded L-PBF’ed materials exceeded those of rolled materials and met the minimum requirement from ASTM specification; however, the ductility of welded L-PBF’ed material did not. The brittleness of these L-PBF’ed materials came from the brittle Laves phase and Al-Ti-O compounds in the microstructure and non-optimal L-PBF parameters. These drawbacks can be further reduced by adjusting the L-PBF parameters and suitable post-processing techniques before electron beam welding.

Pseudospark produced pulsed electron beam for material processing

1995 ◽  
Vol 23 (3) ◽  
pp. 258-264 ◽  
Author(s):  
R. Stark ◽  
J. Christiansen ◽  
K. Frank ◽  
F. Mucke ◽  
M. Stetter
Keyword(s):  
Material Processing ◽  
Electron Beam ◽  
Pulsed Electron Beam

IUMRS-ICA 2008 Symposium ’AA. Rare-Earth Related Material Processing and Functions‘

2009 ◽  
Vol 1 ◽  
pp. 011001 ◽  
Author(s):  
Takayuki Komatsu ◽  
Tsugio Sato ◽  
Ken-ichi Machida ◽  
Hirotoshi Fukunaga
Keyword(s):  
Material Processing ◽  
Rare Earth ◽  
Related Material

scholarly journals Challenges and Opportunities for Integrating Dealloying Methods into Additive Manufacturing

Materials ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 3706
Author(s):  
A. Chuang ◽  
J. Erlebacher
Keyword(s):  
Material Processing ◽  
Additive Manufacturing ◽  
Composite Materials ◽  
Material Properties ◽  
Functional Materials ◽  
Challenges And Opportunities ◽  
Integral Role ◽  
Nanoporous Metals ◽  
Processing Techniques ◽  
Nanoscale Features

The physical architecture of materials plays an integral role in determining material properties and functionality. While many processing techniques now exist for fabricating parts of any shape or size, a couple of techniques have emerged as facile and effective methods for creating unique structures: dealloying and additive manufacturing. This review discusses progress and challenges in the integration of dealloying techniques with the additive manufacturing (AM) platform to take advantage of the material processing capabilities established by each field. These methods are uniquely complementary: not only can we use AM to make nanoporous metals of complex, customized shapes—for instance, with applications in biomedical implants and microfluidics—but dealloying can occur simultaneously during AM to produce unique composite materials with nanoscale features of two interpenetrating phases. We discuss the experimental challenges of implementing these processing methods and how future efforts could be directed to address these difficulties. Our premise is that combining these synergistic techniques offers both new avenues for creating 3D functional materials and new functional materials that cannot be synthesized any other way. Dealloying and AM will continue to grow both independently and together as the materials community realizes the potential of this compelling combination.

Focused Ion Beam Nanofabrication: A Comparison with Conventional Processing Techniques

2006 ◽  
Vol 6 (3) ◽  
pp. 661-668 ◽  
Author(s):  
R. M. Langford
Keyword(s):  
Electron Beam ◽  
Electron Beam Lithography ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Side Wall ◽  
Feature Size ◽  
Diverse Range ◽  
Minimum Feature Size ◽  
Nano Science ◽  
Processing Techniques

Focused ion beam and dual platform systems are versatile tools for nanoengineering and nano-science applications. These systems complement conventional processing methods and can be used to prototype and modify a diverse range of nano-devices and sensors. This article discusses FIB nanofabrication and compares it with other fabrication techniques such as electron beam lithography and reactive ion etching. Aspects such as the minimum feature size and side wall profiles are discussed and compared. In addition, the limitations and detrimental effects of FIB processes are discussed.

Versatile Applications of Ion Implanted Polymers

1995 ◽  
Vol 396 ◽  
Author(s):  
R.E. Giedd ◽  
Y.Q. Wang ◽  
M.G. Moss ◽  
J. Kaufmann
Keyword(s):  
Mechanical Properties ◽  
Material Processing ◽  
Ion Beam ◽  
Complete Understanding ◽  
Recent Advances ◽  
Ion Beam Implantation ◽  
Processing Techniques ◽  
Temperature Strain ◽  
Ion Implanted

AbstractIon beam implantation of polymers has been shown to modify electrical and mechanical properties near the surface of the material. A complete understanding of the mechanism of modification and type of microstructure remaining as a result of this process has not yet been achieved. In this paper, we will discuss how recent advances in our understanding of these fundamental mechanisms and material processing techniques has led to a number ot prototypical applications. Specifically, the fundamentals of using ion implanted polymers as high value, small geometry resistors, temperature, strain, and vacuum sensing materials and as protective surfaces in chemically reactive environments.

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