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  • 500

    Global Exhibitors

    Global Exhibitors
  • 25000

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News / News
Room-temperature cycling cools down strengthening in aluminium alloys
Aluminium alloys are widely used in many industrial applications including automobiles and aeroplanes, on account of their light weight. However, the wide-spread use of such alloys was contingent on the discovery of precipitate strengthening as a means for improving the tensile properties of these alloys necessary for most applications. Discovered over a hundred years ago, the technique involves heating alloys to elevated temperatures, which allows nanoscale secondary phases to precipitate in the metal. These precipitates hinder dislocation motion throughout the material and greatly increase their tensile strength. Now, however, Australian researchers led by Christopher Hutchinson at Monash University have developed a room-temperature cycling technique that reproduces and improves these material properties much more quickly and cheaply.The inclusion of nanoscale precipitates into high-performance alloys is a key mechanism for improving their tensile properties for many indust...
2019 - 09 - 18
Room-temperature cycling cools down strengthening in aluminium alloys
Aluminium alloys are widely used in many industrial applications including automobiles and aeroplanes, on account of their light weight. However, the wide-spread use of such alloys was contingent on the discovery of precipitate strengthening as a means for improving the tensile properties of these alloys necessary for most applications. Discovered over a hundred years ago, the technique involves heating alloys to elevated temperatures, which allows nanoscale secondary phases to precipitate in the metal. These precipitates hinder dislocation motion throughout the material and greatly increase their tensile strength. Now, however, Australian researchers led by Christopher Hutchinson at Monash University have developed a room-temperature cycling technique that reproduces and improves these material properties much more quickly and cheaply.The inclusion of nanoscale precipitates into high-performance alloys is a key mechanism for improving their tensile properties for many indust...
2019 - 09 - 18
A new rare metals alloy can change shape in the magnetic field
Scientists developed multifunctional metal alloys that emit and absorb heat at the same time and change their size and volume under the influence of a magnetic fieldScientists from Peter the Great St.Petersburg Polytechnic University (SPbPU) with their colleagues developed multifunctional metal alloys that emit and absorb heat at the same time and change their size and volume under the influence of a magnetic field. This effect is caused by changes in the structure of the substance. The alloys may be used in medicine and industry. The project was supported by the Russian Foundation For Basic Research and carried out as a part of the state assignments of the Federal Agency for Scientific Organizations and the Ministry of Education and Science of the Russian Federation.When magnetized, certain bodies change their volume and linear dimensions. This phenomenon is called magnetostriction. The shape changes depend both on the properties of the magnetic field and on the substan...
2019 - 09 - 11
Air Force Develops Steel Alloy for 3D Printing
A steel alloy developed at the Air Force Research Laboratory, called AF-9628, has the strength and toughness needed for aerospace parts. The alloys costs less than some other high-performance steel alloys, including Eglin Steel and HP-9-4-20; however, it is more expensive than common grades used in conventional munitions. AF-9628 is unique in that it does not contain tungsten, which is  found in Eglin Steel, or cobalt, which is  found in HP-9-4-20.The lab determined that AF-9628 is a good material for additive manufacturing due to its high strength. The lab tested the alloy using a powder bed fusion 3D printing machine. The AF-9628 powder melted predictably in the machine and finished parts met benchmarks for  porosity, strength, and impact toughness right out of the machine. No post-processing was needed.Many  tested alloys don’t take to additive manufacturing very well, according to the researchers. For example, certain alloys will not melt and then crack a lot on...
2019 - 09 - 06
U.S. Steel: No index-based pricing in 2020 contracts
U.S. Steel is planning a fundamental change in the way it goes to market, informing its salesforce this week that it will no longer use index-based pricing effective with its 2020 contracts. Should other mills follow suit, the move has wide-ranging implications for steel prices and the way contracts are negotiated.In an Aug. 13 letter to its North American Flat-Rolled Sales Organization, the company stated the following:“As we have seen in business conditions over the last several quarters and years, the North American flat-rolled market remains volatile and unpredictable. This volatility creates not only significant challenges to plan and run our continuous operations, but it also creates enormous headwinds for our customers who are attempting to manage their demand, inventory, and balance sheets.“It has become clear that a component to this uncertainty and risk today has been the growth of adjustable price contract mechanisms. While the intent might have been to ensure a steady flow ...
2019 - 08 - 28
Scientists create new aluminum alloy with flexibility, strength, lightness
Aluminum is one of the most promising materials for aeronautics and automobile industry. Scientists from the National University of Science and Technology (MISIS) found a simple and efficient way of strengthening aluminum-based composite materials. Doping aluminum melt with nickel and lanthanum, scientists managed to create a material combining benefits of both composite materials and standard alloys: flexibility, strength, lightness. The article on the research is published in Materials Letters.Lighter and faster aircraft and vehicles require lighter materials. One of the most promising materials is aluminum, or rather, aluminum-based composites.Scientists from NUST MISIS scientific school 'Phase Transitions and Development of Non-Ferrous Alloys' created a new strong Al-Ni-La composite for aircraft and automobile industry. Doping elements were added to the aluminum melt, forming special chemical compounds that further formed strong reinforcing structure.'Our resear...
2019 - 08 - 23
Alloy Steel: Everything you need to know about alloy steels Pt.2
Types of alloy steelThere are two kinds of alloy steel – low-alloy steel and high-alloy steel. As mentioned earlier, the composition and proportion of alloying elements determine the various properties of alloy steel. Low-alloy steels are the ones which have up to 8% alloying elements whereas high-alloy steels have more than 8% alloying elements. Alloying elements There are around 20 alloying elements that can be added to carbon steel to produce various grades of alloy steel. These provide different types of properties. Some of the elements used and their effects include: Aluminium – can rid steel of phosphorous, sulfur and oxygenChromium – can increase toughness, hardness and wear resistanceCopper – can increase corrosion resistance and harnessManganese – can increase high-temperature strength, wear resistance, ductility and hardenabilityNickel – can increase corrosion, oxidation resistance and strengthSilicon – can increase magnetism and s...
2019 - 08 - 08
Alloy Steel: Everything you need to know about alloy steels  Pt.1
An overview of ‘steel’ Steel is among the most popular materials used in the construction industry. According to the World Steel Association, in 2018 around 1,808 million tons of crude steel was produced worldwide and about 50% of this production was utilized by the construction industry. Further, they also state that there are as many as 3,500 different grades of steel and each grade offers environmental, chemical and physical properties unique to that grade of steel and each grade offers environmental, chemical and physical properties unique to that grade of steel. Steel has undergone significant evolution through time and around 75% of all the types of modern-day steel were developed in the past 20 years. It is interesting to note that had the Eiffel Tower (constructed in 1887) been constructed in today’s times, it would require only one-third of the steel used back then. Types of steel Fundamentally, steel is an alloy of iron with low amounts of carbon. There ar...
2019 - 08 - 01
New Reactor-liner Alloy Material Offers Strength, Resilience
This is Osman El Atwani (left) and Enrique Martinez at the transmission electron microscope.Credit: Los Alamos National LaboratoryA new tungsten-based alloy developed at Los Alamos National Laboratory can withstand unprecedented amounts of radiation without damage. Essential for extreme irradiation environments such as the interiors of magnetic fusion reactors, previously explored materials have thus far been hobbled by weakness against fracture, but this new alloy seems to defeat that problem.'This material showed outstanding radiation resistance when compared to pure nanocrystalline tungsten materials and other conventional alloys,' said Osman El Atwani, the principal investigator of the 'Radiation Effects and Plasma Material Interactions in Tungsten Based Materials' project at Los Alamos. 'Our investigations of the material mechanical properties under different stress states and response of the material under plasma exposure are ongoing.''It seems that we have developed a material w...
2019 - 03 - 07
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