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Keyword: metallurgy

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  • Steel Manufactured in Scotland 2,500 Years Ago

    02/08/2014 1:10:49 PM PST · by SunkenCiv · 41 replies
    Archaeology ^ | Wednesday, January 15, 2014 | unattributed
    Scientists have determined that fragments of artifacts recovered from the Broxmouth Iron Age hill fort in the 1970s were forged from high-carbon steel. The objects, which date to between 490 and 375 B.C., may have been tools or weapons. “The process of manufacturing steel requires extensive knowledge, skill and craftsmanship. It is far from straightforward, which is why such an early example of its production tells us so much about the people who once occupied this hill fort,” said Gerry McDonnell of the University of Bradford. The site featured well-preserved roundhouses, hill fort entrances, and an Iron Age cemetery.
  • World’s First 3D Printed Metal Gun (printed 1911 .45acp)

    11/08/2013 5:16:56 PM PST · by servo1969 · 19 replies
    solidconcepts.com ^ | 11-7-2013 | Alyssa
    (image courtesy of solidconcepts.com) Let me start out by saying one, very important thing: This is not about desktop 3D Printers. Solid Concepts is a world leader of 3D Printing services, and our ability to 3D Print the world’s first metal gun solidifies our standing. The gun is a classic 1911, a model that is at once timeless and public domain. It functions beautifully: Our resident gun expert has fired 50 successful rounds and hit a few bull’s eyes at over 30 yards. The gun is composed of 30+ 3D Printed components with 17-4 Stainless Steel and Inconel 625...
  • Molten metal solidifies into a new kind of glass

    07/30/2013 6:47:57 AM PDT · by Red Badger · 32 replies
    07-30-2013 | Provided by Argonne National Laboratory
    (Phys.org) —When a molten material cools quickly, parts of it may have enough time to grow into orderly crystals. But if the cooling rate is too fast for the entire melt to crystallize, the remaining material ends up in a non-crystalline state known as a glass, with atoms caught in place essentially as a frozen liquid. Recently, a group of researchers at the National Institute of Standards and Technology (NIST) came across an unexpected reversal of this usual sequence of events. After cooling a molten alloy of aluminum, iron, and silicon, they found that glassy nodules of a non-crystalline solid...
  • 'A Q Khan (Pakistani nuke scientist) visited Timbuktu for uranium'

    02/17/2004 6:03:16 PM PST · by AM2000 · 6 replies · 902+ views
    rediff.com ^ | February 17, 2004 19:12 IST | Shyam Bhatia in London
    The London accountant who accompanied Dr Abdul Qadeer Khan to Timbuktu on three occasions in 1998, 1999 and 2000 says the 'father' of the Pakistani bomb witnessed the digging of a well, toured an ancient Islamic library and enjoyed the views of the desert. A remote outpost in the middle of the West African desert, Timbuktu usually attracts explorers associated in the popular mind with the adventures of the comic character Tin Tin. And Pakistani dissidents told rediff.com the reason for Khan's visit to Timbuktu, part of landlocked West African state of Mali, was to prospect for uranium. They say...
  • Secrets of the Viking Sword

    12/10/2012 9:24:14 AM PST · by Renfield · 24 replies
    PBS (NOVA) ^ | 10-10-2012
    Here's a link to a page with a nice video from Nova, about Viking swords, for all you Viking history buffs out there... http://www.pbs.org/wgbh/nova/ancient/secrets-viking-sword.html
  • Bristol physicists break 150-year-old law

    07/21/2011 6:46:44 AM PDT · by Red Badger · 29 replies
    http://www.physorg.com ^ | July 20, 2011 | Staff + University of Bristol
    A violation of one of the oldest empirical laws of physics has been observed by scientists at the University of Bristol. Their experiments on purple bronze, a metal with unique one-dimensional electronic properties, indicate that it breaks the Wiedemann-Franz Law. This historic discovery is described in a paper published today in Nature Communications. In 1853, two German physicists, Gustav Wiedemann and Rudolf Franz, studied the thermal conductivity (a measure of a system’s ability to transfer heat) of a number of elemental metals and found that the ratio of the thermal to electrical conductivities was approximately the same for different metals...
  • Antibacterial stainless steel created

    07/19/2011 10:34:19 AM PDT · by Red Badger · 21 replies
    www.physorg.com ^ | 07-19-2011 | Staff + University of Birmingham
    Materials scientists at the University of Birmingham have devised a way of making stainless steel surfaces resistant to bacteria in a project funded by the Engineering and Physical Sciences Research Council which culminated this week. By introducing silver or copper into the steel surface (rather than coating it on to the surface), the researchers have developed a technique that not only kills bacteria but is very hard and resistant to wear and tear during cleaning. Bacteria resistant surfaces could be used in hospitals to prevent the spread of superbug infections on stainless steels surfaces, as well as in medical equipment,...
  • Stronger Than Steel, Novel Metals Are as Moldable as Plastic

    02/28/2011 8:06:03 PM PST · by Red Badger · 30 replies
    Science Daily ^ | 02-28-2011 | Staff
    Imagine a material that's stronger than steel, but just as versatile as plastic, able to take on a seemingly endless variety of forms. For decades, materials scientists have been trying to come up with just such an ideal substance, one that could be molded into complex shapes with the same ease and low expense as plastic but without sacrificing the strength and durability of metal Now a team led by Jan Schroers, a materials scientist at Yale University has shown that some recently developed bulk metallic glasses(BMGs)-metal alloys that have randomly arranged atoms as opposed to the orderly, crystalline structure...
  • Pre-Incan Mettalurgy Discovered

    04/19/2007 4:43:37 PM PDT · by blam · 17 replies · 906+ views
    Yahoo News/Live Science ^ | 4-19-2007 | Charles Q. Choi
    Pre-Incan Metallurgy Discovered Charles Q. Choi Special to LiveScience Thu Apr 19, 9:50 AM ET Metals found in lake mud in the central Peruvian Andes have revealed the first evidence for pre-Colonial metalsmithing there. These findings illustrate a way that archaeologists can recreate the past even when looters have destroyed the valuable artifacts that would ordinarily be relied upon to reveal historical secrets. For instance, the new research hints at a tax imposed on local villages by ancient Inca rulers to force a switch from production of copper to silver. Pre-Colonial bronze artifacts have previously been found in the central...
  • Metallurgy In Ancient India Was Advanced

    01/26/2007 2:44:05 PM PST · by blam · 16 replies · 759+ views
    Hindustan Times ^ | 1-25-2007 | Varanasi
    Metallurgy in ancient India was advanced HT Correspondent Varanasi, January 25 EMINENT METALLURGICAL engineer and former rector of the Banaras Hindu University Prof TR Anatharaman said that ancient India contributed a lot in the field of metallurgy. He was delivering a lecture on ‘Metallurgical Marvels of Ancient India’ on the third-day of four-day seminar on ‘History of Indian Science and Technology’ at Swatantrata Bhawan in BHU here on Thursday. Prof Anatharaman, also former director of Institute of Technology (IT-BHU) and presently Chancellor of Ashram Atmadeep (Gurgaon) said that recent historical studies and scientific researches have thrown considerable new light on...
  • Secret's Out For Saracens Sabres (Damascus Steel)

    11/15/2006 11:04:58 AM PST · by blam · 109 replies · 3,070+ views
    New Scientist ^ | 11-15-2006
    Secret's out for Saracen sabres 15 November 2006 NewScientist.com news service DURING the middle ages, the Muslims who fought crusaders with swords of Damascus steel had an edge - a very high-tech one. Their sabres contained carbon nanotubes. From about AD 900 to AD 1750, Damascus sabres were forged from Indian steel called wootz. Peter Paufler of the Technical University of Dresden, Germany, and colleagues studied samples of a 17th-century sword under an electron microscope and found clear evidence of carbon nanotubes and even nanowires. The researchers think that the sophisticated process of forging and annealing the steel formed the...
  • French Archaeologist Solves Mystery of Ancient Mesopotamian City

    04/08/2005 3:35:01 PM PDT · by nickcarraway · 11 replies · 901+ views
    Turkish Press ^ | Annick Benoist
    PARIS - The mystery of an ancient Mesopotamian city has finally been lifted after 25 years of meticulous work by a French archaeologist who has revealed it was one of the first "modern cities", purpose-built in the desert for the manufacture of copper arms and tools. In a new book entitled "Mari, the Metropolis of the Euphrates", Jean-Claude Margueron said the third millennium BC city, in modern day Syria, was "one of the first modern cities of humanity. Created from scratch in one phase of construction with the specific goal of becoming this (metallurgical) centre." This was an astounding concept...
  • Not Guns, Nor Lead, But Men's Vices

    01/18/2005 12:03:46 PM PST · by 45Auto · 4 replies · 568+ views
    American Digest ^ | 18 January 2005 | Pat Cummings
    The first illustrated "how-to" book for mining and metallurgy was written by the German Georg Bauer in the mid-16th century. The book has been in print and used from then to now with only minor changes were needed to accommodate modern materials. ("Bauer" was Latinized to "Agricola", probably by his teachers at the University of Leipzig.) Agricola was a teacher, philosopher and doctor as well as the world's first industrial publicist, and the opening of De re Metallica ("Concerning Metals") reflects his philosophical bent. While re-reading it recently, I was struck by this passage in Chapter One. In the midst...
  • Old balls still scorch

    05/06/2002 1:04:11 PM PDT · by Registered · 29 replies · 666+ views
    Nature ^ | 05.06.02 | David Adam
    Old balls still scorch Pores made shipwrecked cannon balls glow spontaneously. 6 May 2002 DAVID ADAM Cannonball run: iron may heat rapidly in air after years in the ocean. © AP Goodness gracious! Two British chemists believe they have solved the 26-year-old mystery of how shipwrecked cannonballs that were rescued from the deep spontaneously erupted into great balls of fire."They were glowing bright red and you could feel the heat coming off them as the desk began to smoke," recalls Bob Child, now a chemist at the National Museums and Galleries of Wales in Cardiff.It all happened in 1976,...