3D Printed Damascus Steel Now Possible
Creating Damascus steel was once the preserve of secretive blacksmiths, who used special techniques and endless care to produce steel of exceptional quality.
Can it be 3D printed? Apparently yes.
(A close-up look at the layered metal (top left)
with atom-mapping analyses showing the dark flecks of precipitated
nickel-titanium. Graph at bottom right shows the make-up of the
Traditional folded steels combined two steels that varied by carbon content and in their microscale structure, which is controlled by how quickly it cools (by quenching). In this case, the researchers were using a nickel-titanium-iron alloy steel that works well with these 3D printing techniques, in which metal powder is fed onto the work surface and heated with a laser.
Rapid cooling of this steel also produces a crystalline form as in quenched high-carbon steels. But further heat treatment leads to the precipitation of microscopic nickel-titanium particles within the steel that greatly increase its hardness—a pricey material called “maraging steel.”
The team’s idea was to use the layer-by-layer printing process to manipulate the temperatures each layer experienced, alternating softer, more flexible layers with layers hardened by that precipitation process. While printing a cubic chunk of steel, they did this simply by turning the laser off for a couple minutes or so every few layers. The top layer would rapidly cool, converting to the desired crystalline form. Then, as additional layers were added on top, temperatures in the crystalline layer would cycle back up, inducing the precipitation of the nickel-titanium particles.
I'm pretty enthused about the idea that science fiction materials might be creatable with someone with imagination and advanced 3D printers. Some of my favorite examples that might be 3D printable include Durite from Robert Heinlein's 1939 story Misfit,
fanmetal from Frank Herbert's 1965 novel Dune, and
Helio-Beryllium from Robert H. Wilson's 1931 story Out Around Rigel:
Eighty-eight swung some millions of miles further around the sun. The pock-marks on her face grew deeper, and were lined with Durite, that strange close-packed laboratory product which (usually) would confine even atomic disintegration.
Via High-strength Damascus steel by additive manufacturing and ArsTechnica.
Scroll down for more stories in the same category. (Story submitted 6/17/2020)
Follow this kind of news @Technovelgy.
| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |
you like to contribute a story tip?
Get the URL of the story, and the related sf author, and add
Comment/Join discussion ( 0 )
Related News Stories -
3D Printed Damascus Steel Now Possible
'... lined with durite, that strange close-packed laboratory product.' - Robert Heinlein, 1939.
3D Printing Of Metallic Glass
Draw Circuits With Conductive Ink
'It's rewiring things... squeezing silver toothpaste in a ribbon along the printed circuitry.'
How To Encode The 'Memory' Of Materials
'Just jar it, and it falls into that structure like a rubber figure returning to shape.' - Samuel R. Delany, 1966.
Technovelgy (that's tech-novel-gee!)
is devoted to the creative science inventions and ideas of sf authors. Look for
the Invention Category that interests
you, the Glossary, the Invention
Timeline, or see what's New.
Looking Glass Display Good Enough For Science Fiction, Fantasy
'The figure seemed to be swimming toward the surface.'
Do You Need The Entire Fembot? Maybe Just The Hand
'...Men don't want real women anymore. You and I are behind the times...'
3D Printing With Sunlight And Sand
'We made a crude, small cell and were delighted...'
Samsung Gets Transparent Smartphone Patent
The Transparency of Things to Come
Monkey Gets A Bigger Brain, Thanks To Human Gene
'It's a madhouse! a madhouse!'
Solar Power Beamed From Space Studied By Brit Boffins
'Our beams feed these worlds energy drawn from... the Sun.'
Pandemic Entrepreneurs! Consider Robo Esso Robot Barista
'... the perpetual beam carved in the robot face of the bartender, the classic Irish grin.'
Shape-Shifting Robot From MIT
'... the structure of that shape is retained down to the molecules.'
Tesla's 20,000 Superchargers
'To recharge the batteries, which can be done in almost every town and village...'
Smallest Rogue Planet Discovered In Milky Way
'...a swarm of rogue planets chanced by.'
New Technology For Interplanetary Communication
'... sweating, heat-blistered engineers at every interplanetary radiograph station on three planets, stood by their generators.'
First Lunar Water, Then... Monolith?
'It looks brand new, doesn't it?'
Flying Robot Inspired By Hawks
'The dark birdforms dotted the mountaintops...'
Jet-Powered Flying Suits Tested By Navy
'With his motor in operation, he moves like a diver, head foremost...'
Pub Installs Electrified Fence Around Bar
'I start twelve immensely strong wires--naked, not insulated --from a big dynamo...'
What Does A Tesla Full Self-Driving Car See?
'All objects within my panoramic gaze trembled and vibrated like quick motion pictures...'
More SF in the News Stories
More Beyond Technovelgy science news stories