Tungsten is a dense, robust metal that has a number of valuable applications, particularly in the chemical industry thanks to its corrosion resistance. Its hardness and extremely high melting point, however, have made it a difficult material to 3D print. In a paper entitled “Effect of processing parameters on the densification, microstructure and crystallographic texture during the laser powder bed fusion of pure tungsten,” a group of researchers addresses those challenges.
“This work looks to extend its [laser powder bed manufacturing’s] use to refractory metals, such as those considered in this paper where the behaviour of pure tungsten powder is investigated,” the researchers explain. “A strategy for fabricating high density parts was developed by creating a process map in which the effect of laser energy density was studied. The process quality was assessed using different techniques including light optical microscopy, XCT, SEM and EBSD. The results showed that the laser energy density was adequate to process tungsten to produce functional parts.”
Depending on the process conditions, the bulk density and optically determined densities of the tungsten ranged from 94 to 98%, but the parts showed micro cracks and defects due to micro- and macro-scale residual stress.
You May Also Like
Researchers Use Autodesk Ember 3D Printer to Characterize 3D Printed Lenses
In the recently published ‘Characterization of 3D printed lenses and diffraction gratings made by DLP additive manufacturing,’ international researchers studied digital fabrication of optical parts using DLP 3D printing. Examining...
Germanium, Silica & Titanium Lend Stability to 3D Printing Optical Glass
In the recently published ‘Sol-Gel Based Nanoparticles for 3D Printing of Optical Glass,’ Peter Palencia and Koroush Sasan of Lawrence Livermore National Laboratory are innovating further in the realm of...
Lithuanian Startup Dear Deer Eyewear Offers Bespoke 3D Printed Eyeglasses Online
Because I was really into Barbies at age 6 when I first got prescription lenses, my very first pair of eyeglasses were huge and bright pink…I shudder to look at...
Interview with Formalloy’s Melanie Lang on Directed Energy Deposition
When I met Melanie Lang at RAPID a lot of the buzz on the show floor was directed at her startup Formalloy. Formalloy has developed a metal deposition head that...
View our broad assortment of in house and third party products.