Dislocation evolution during additive manufacturing of tungsten

Tungsten (W) is chosen as the investigated material due to its wide application. The internal thermal activated nature of dislocation mobility in W is taken into

Advanced Processing and Machining of Tungsten and

Additive manufacturing processes, including laser techniques and wire arc additive manufacturing, have recently been used for producing tungsten parts. Whilst these processes allow for the production of large parts with

A review on additive manufacturing of refractory tungsten and tungsten

Review: additive manufacturing of pure tungsten and tungsten-based alloys. Tungsten is a refractory metal that has a wide range of applications in many fields. However, its high ductile-to-brittle transition temperature limits its processing and machining. While additive.

Researchers review processes for tungsten Additive Manufacturing

The team behind ''A review on additive manufacturing of refractory tungsten and tungsten alloys'' tested the performance of a tungsten component produced via PBF-EB and reported that the bond strength was reported to be less than standard wrought tungsten. The paper was authored by Alberico Talignani, Raiyan Seede, Austin

Additive manufacturing of high density pure tungsten by electron

Additive manufacturing (AM) of tungsten could overcome these limitations and resulting design restrictions. However, AM of tungsten also poses

Kennametal Leads the Way in Tungsten Carbide

PITTSBURGH, September 13, 2021 — Kennametal Inc. (NYSE: KMT) announced today the launch of KAR85-AM-K, its most corrosion resistant tungsten carbide grade for metal additive manufacturing. It is

Ultrasonic effects on gas tungsten arc based wire additive

A non-consumable 1.5% lanthanated tungsten electrode was employed to initiate and maintain the welding arc. The filler metal was fed in front of the arc while the UA probe traveled behind the arc. During additive manufacturing, the as-deposited layers will experience remelting and reheating thermal cycles, which leads to a procedure of re

Achieving high-performance pure tungsten by additive

The indirect additive manufacturing technique based on the use of nanopowder precursors developed in this work provides a new technical approach for the

Crack‐Free Tungsten Fabricated via Laser Powder Bed Fusion Additive

Additive manufacturing of tungsten (W) is challenging due to its high melting point, high thermal conductivity, oxidation tendency, and brittleness from grain boundary (GB) oxides. In this study, the processing

A review on additive manufacturing of refractory tungsten and tungsten

Here, we review the progress of additive manufacturing effort on refractory metal tungsten and tungsten alloys. These materials are excellent candidates for a variety of high temperature applications but extremely challenging to fabricate via additive manufacturing due to a series of existing issues during the manufacturing.

Additive Manufacturing | Metal 3D Printing

Kennametal offers end-to-end AM solutions for series production parts. We have quickly become a leader in the additive manufacturing space with our ability to offer fully dense, cemented tungsten carbide, 3D-printed

High compression strength pure tungsten fabricated by plasma

High strength pure tungsten is fabricated by wire plasma arc additive manufacturing (WPAAM). WPAAM W has extremely less microcracks compared with that fabricated by laser powder bed fusion (LPBF). WPAAM W exhibits the high compressive performance ( σ bc =1350–1550 MPa, ε f =35% ∼ 39%), comparable to the ultrafine

Additive manufacturing of tungsten, tungsten‐based alloys, and

Additive manufacturing of tungsten, tungsten-based alloys, and tungsten matrix composites 3 1 3 Knowing the distinctive advantages and drawbacks of these AM

Laser based additive manufacturing of tungsten: Multi-scale

1. Introduction Tungsten is a unique metal with an outstanding combination of properties such as high melting point (3695 K), superior strength (yield strength >1 GPa at room temperature [1]), high thermal conductivity (∼174 Wm −1 K −1 [2]), extremely low coefficient of thermal expansion (4.3×10 −6 K −1) and excellent resistance

Additive manufacturing of tungsten, tungsten-based alloys, and

In this work, a new indirect additive manufacturing technique to produce tungsten-copper composites (W-Cu) triply periodic minimal surface (TPMS) geometries

Dislocation evolution during additive manufacturing of tungsten

Additive manufacturing (AM) frequently encounters part quality issues such as geometrical inaccuracy, cracking, warping, etc. This is associated with its unique thermal and mechanical cycling during AM, as well as the material properties. Although many efforts have been spent on this problem, the underlying dislocation evolution

Additive manufacturing of tungsten, tungsten-based alloys, and tungsten

Tungsten (W) materials are gaining more and more attention due to the extended applications of metallic systems in the extreme environments. Given W''s unique characteristics like room-temperature brittleness, additive manufacturing (AM) techniques could give them a higher design flexibility and manufacturability.

Tungsten Alloys and 3D Printed Tungsten | Wolfmet

We can also 3D print pure tungsten using our revolutionary additive manufacturing process – Wolfmet 3D. It is perfect for the manufacture of high-precision components such as collimators and radiation shields in imaging systems. To find out more visit .

ORNL 3D prints new complex, defect-free tungsten components

Researchers at the US Department of Energy (DoE)''s Oak Ridge National Laboratory (ORNL) have 3D printed defect-free tungsten parts with complex geometries. Produced using electron-beam additive

Microstructural evolution and mechanical response of

Gas tungsten wire arc additive manufacturing (GT-WAAM) has been widely used in aerospace parts manufacturing due to the advantages of low energy input, less splash and good forming effect. So far, GT-WAAM technology is mostly used in the parts manufacture of high-strength aluminum alloy, high-strength titanium alloy and high

3D printing with tungsten and tungsten carbide – Beamler

3D printing with tungsten and tungsten carbide. On April 14, 2020. Tungsten powder, in its pure form and as a composite, is now available for additive manufacturing, using Selective Laser Melting (SLM) and as of late binder jetting technologies. Tungsten also known as Wolfram, is a rare metal famous for having the

Researchers Sidestep Cracking in Additive Manufacturing of

"Additive manufacturing provides the opportunity to bring new life to these materials, allowing us to form them in ways we couldn''t before." In a recent paper about additive manufacturing of tantalum, a team of APL researchers discovered that minimizing porosity (a common objective in additive manufacturing) is not the highest

Review: additive manufacturing of pure tungsten and tungsten

While additive manufacturing is an emerging tool for manufacturing complex tungsten parts, cracking and low densification are the main challenges with

Additive Manufacturing

Elmet Technologies (formerly H.C. Starck Solutions) has powder feedstock with tailored properties perfectly suited for the additive manufacturing industry. Our core competencies of tungsten (W), molybdenum (Mo), tantalum (Ta), and niobium (Nb)—in pure and alloyed forms—ensure our customers receive only the highest quality materials.

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Global Tungsten & Powders (GTP) develops, manufactures, and markets refractory metal powders such as tungsten, tungsten carbide, and cobalt. GTP is a leading Western supplier with production facilities in the United States, Finland, the Czech Republic, and Luxembourg. Think Tungsten. Think GTP. News.

Selective laser melting high-performance ZrC-reinforced tungsten

Selective laser melting (SLM) tungsten (W) constantly suffered from severe cracking phenomenon due to the high melting temperature and low intrinsic ductility of W material. Fortunately, selective laser melting (SLM), as a metal additive manufacturing (AM) technology, can directly manufacture complex metal parts without molds [9, 10

Processes | Free Full-Text | Tungsten Heavy Alloys

Tungsten-heavy alloys (WHA) are a pseudo-alloy in which tungsten is the primary phase and remains filled with additives such as Ni–Fe and Ni–Cu. These alloys are widely used to make their

Traditional and additive manufacturing of a new Tungsten

Novel W Cr alloy with density comparable to conventional tungsten heavy alloys (WHA). Processing of W Cr is by both press and sinter and the novel additive manufacturing technique bound metal deposition (BMD). W Cr is solid state sintered resulting in better shape retention of 3D printed parts compared to liquid phase sintered

Analysis of laser-induced microcracking in tungsten under additive

Additive manufacturing is a promising technique able to produce complex parts, but the structural integrity is compromised by microcracking. This work combines thermomechanical simulations with in situ high-speed video of microcracking in single laser-melted tracks, visualizing the ductile-to-brittle transition.

Quadrus: Powder Management Tactics for Tungsten Rhenium and

Peter Zelinski. Editor-in-Chief, Additive Manufacturing. "The challenge is the tedium," says Joseph Sims, director of advanced manufacturing for Quadrus Corp., as he describes the work his company''s team members do to clean laser powder bed fusion machines for material changeover. Here is a tungsten rhenium throat insert for a solid

Tungsten Additive Manufacturing: X-Rays Collimators – Beamler

Tungsten Additive Manufacturing: X-Rays Collimators. On November 25, 2022. Collimators are devices used to orientate and filtrate a beam of particles or waves. This article gives an in-depth presentation of additive manufacturing of collimators, current technologies and future challenges. We will also review the additive manufacturing of

Additive manufacturing of tungsten, tungsten-based alloys, and

Wei C, Liu L, Gu Y, Huang Y, Chen Q, Li Z, Li L. Multi-material additive-manufacturing of tungsten—copper alloy bimetallic structure with a stainless-steel interlayer and associated bonding mechanisms. Addit Manuf. 2022;50: 102574. CAS

Additive manufacturing of high density pure tungsten by electron beam melting

With the help of additive manufacturing (AM) some of these design restrictions could be overcome and completely new concepts could be realized. AM, originating from rapid prototyping, has made much progress in the last years and is meanwhile a well-known term, describing typically a layer-by-layer computer-controlled

ORNL 3D prints new complex, defect-free tungsten components

"Electron-beam additive manufacturing is promising for the processing of complex tungsten geometries," commented Michael Kirka, Group Leader of the Deposition Science and Technology Group at ORNL.

A review on additive manufacturing of refractory tungsten and

We review the progress of additive manufacturing effort on refractory metal tungsten and tungsten alloys. These materials are excellent candidates for a

(PDF) A review on additive manufacturing of

Scanning electron micrographs showing cracking behavior of tungsten bare plate during single-track experiments. (a) The laser power was set at P = 300 W and speed v= 300 mm/s. Melt pool is marked