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Scientists from Texas A&M University and the U.S. Air Force say they’ve developed a way to 3D print the strongest kind of steel, along with many other metals.By using a steel powder melted into place by a laser, this process follows in the footsteps of technologies like powder welding. And by adding a mathematical model to gauge which laser settings will best reduce printing flaws, the researchers have made a process they say makes strong steel into strong 3D-printed steel items.The mathematical model and its results are presented as an “optimization framework” that anchors the research team’s new paper.“This framework utilizes the computationally inexpensive Eagar-Tsai model, calibrated with single track experiments, to predict the melt pool geometry,” the team writes. “Computationall...
Published: 2020 - 04 - 24
Views:224
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.
Published: 2019 - 09 - 06
Views:437
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.
Published: 2019 - 08 - 28
Views:151
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.
Published: 2019 - 08 - 23
Views:255
There 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.
Published: 2019 - 08 - 08
Views:161
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, c
Published: 2019 - 08 - 01
Views:259
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