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Heusler alloys are magnetic materials made from three different metals that are not magnetic individually. The alloys are used broadly for their magnetic and thermoelectric properties, and their ability to regain their original shape after being deformed, known as shape memory. Investigations by Tohoku University's advanced materials scientist An-Pang Tsai and colleagues now show that these materials can also be fine-tuned to speed up chemical reactions. Heusler alloys have a typical composition of two parts metal X, one part metal Y, and one part metal Z (X2YZ). Each of the three come from a distinct region of the periodic table of elements. The original Heusler alloy, discovered in 1898, was Cu2MnAl, made from copper, manganese and aluminium. Many other combinations of met...
Published: 2020 - 01 - 22
Views:222
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 p...
Published: 2019 - 09 - 06
Views:426
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 crea...
Published: 2019 - 08 - 28
Views:146
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&...
Published: 2019 - 08 - 23
Views:247
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: Alumin...
Published: 2019 - 08 - 08
Views:148
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 underg...
Published: 2019 - 08 - 01
Views:253
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