AMAZEMET’s Post

High Entropy Alloys (HEAs) are attracting significant interest globally, based on the opportunity to improve performance in various applications, such as structural, high temperature stability, and corrosion environments, by means of example. Most research conducted to date has focussed on fabricating small buttons, via either melt, or blended elemental Powder Metallurgy (PM) techniques, or thin films, deposited using vapour-based techniques. Consequently, few obvious routes to volume production exist. This is especially pertinent regarding candidate alloys comprising of a combination of refractory and light-weighing elements, such as tantalum and aluminium, which are difficult to mix by conventional metallurgy techniques, due to vast differences in their melting temperatures and densities. Metalysis proprietary electrochemical technology, offers a solution to this scaling challenge. Operating in the solid state, it circumvents issues associated with traditional routes, whilst producing homogeneous alloys. The SEM images below show spherical Al20Ti20Mo10Ta10Nb20Zr20, both in the form of loose powder, and a cross section, demonstrating a consistent microstructure, rather than the presence of discrete regions of individual elements. Our GEN-2 reactors are capable of producing multi-kilogram batches for property testing and customer evaluation, where please visit our website at www.metalysis.com to learn more, and contact us to discuss your requirements. #highentropyalloys #powdermetallurgy #advancedmaterials #tantalum #niobium

Tantalum (Ta) has wide industrial use for its unmatched corrosion resistance in harsh chemical environments, biocompatibility, and prominent use in electrolytic capacitors. While Ta and its alloys have also found use in high temperature structural applications and biomedical implants, it is relatively expensive and thus challenging to justify the material waste generated during traditional machining to create complex components. Moreover, Ta's high melting point precludes the use of casting as a fabrication method; instead, conventional powder metallurgy is used with various post-processing steps to generate simplistic shapes. https://lnkd.in/gR6JZFSm #tantalum #corrosionresistance

🔎𝐑𝐚𝐩𝐢𝐝 𝐀𝐥𝐥𝐨𝐲𝐢𝐧𝐠 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐲: 𝐈𝐧𝐧𝐨𝐯𝐚𝐭𝐢𝐨𝐧𝐬 𝐢𝐧 𝐌𝐞𝐭𝐚𝐥𝐥𝐮𝐫𝐠𝐲 𝐑𝐞𝐬𝐞𝐚𝐫𝐜𝐡 𝐭𝐡𝐫𝐨𝐮𝐠𝐡 𝐌𝐞𝐭𝐚𝐥 3𝐃 𝐏𝐫𝐢𝐧𝐭𝐢𝐧𝐠🔍 We introduce a method for creating New Alloys that is faster, simpler, and uses less material than conventional methods. This approach allows researchers to make alloys in just 30 minutes~1 hour through a simplified process and with only a small amount of material, enabling high quality research in time and cost effectively. Also, it can produce alloys of various shapes (e.g. HEA(High Entropy Alloys), MMC(Metal Matrix Composites), FGM(Functionally Graded Materials), and Bi-metallic joint) by mixing up to 6 materials. Key Features · Focus on powder metallurgy research · Easy to change element · Accurate & Stable powder feeder · Up to 6 materials [Youtube Video] https://lnkd.in/gVC8UHVx For more information, https://lnkd.in/gmdayQnq Many research institutes around the world are already conducting various studies using this technology. https://lnkd.in/gn_FBW_z #Metallurgy #Alloying #MultiMaterial #HighEntropyAlloys #Superalloy #MetalMatrixComposite #FunctionallyGradedMaterial #FGM #HEA #MMC #RapidAlloy

Inconel 718 can be challenging to atomise, primarily due to its high melting point and complex composition. Inconel 718 is a nickel-chromium-based superalloy that also contains significant amounts of iron, niobium, and molybdenum, along with traces of other elements. The atomisation process involves converting the molten alloy into fine droplets and then solidifying them into powder form, which is used for applications like additive manufacturing or powder metallurgy. Here are some reasons why Inconel 718 is difficult to atomise: 🌡️High Melting Point: Inconel 718 has a melting range of approximately 1260-1340°C (2300-2440°F). Achieving and maintaining these high temperatures uniformly in a controlled environment can be challenging and energy-intensive. 💧Viscosity and Surface Tension: The molten alloy has high viscosity and surface tension, making it difficult to break into fine droplets during the atomisation process. 💥Reactive Elements: The presence of elements like niobium can lead to the formation of complex phases or compounds during solidification, potentially affecting the homogeneity and quality of the final powder. ☣️Contamination Control: High-temperature processing increases the risk of contamination from the atomisation equipment, which must be made from materials that can withstand such conditions without degrading or reacting with the molten Inconel 718. To successfully atomise Inconel 718, advanced techniques such as gas atomisation, plasma atomisation, or centrifugal atomisation are often employed. These methods require precise control of process parameters, such as temperature, pressure, and gas flow rates, to ensure the production of high-quality powders with the desired particle size distribution and minimal contamination. Our long-standing history in the powder metallurgy industry has allowed us to successfully atomise a wide variety of super alloys, novel alloy compositions which are pyrophoric in nature, rocket propellants and more. Why not challenge PSI today. #Inconel718 #Atomisation #GasAtomisation #PowderMetallurgy #AdditiveManufacturing #SuperAlloy #NickelChromium #Iron #Niobium #Molybdenum #MoltenMetal 

In our latest work with Dr. Abdollah Bahador, and Prof. Katsuyoshi Kondoh, we've managed to turn titanium and molybdenum powders into exceptionally strong and tough alloys by a sintering and hot-extrusion process; with up to three times the strength of pure titanium (~1500 MPa), and comparable ductility (>10% to failure). Importantly, this is entirely achieved with ONLY solid state processes — completely eliminating the tremendous energy cost required to melt and cast molybdenum (over 2600°C). Such powder metallurgy technologies offer a sustainable and cost-effective alternative to conventional Ti-6Al-4V, and is highly desirable amidst recent concerns surrouding stategic risks to the vanadium supply. Read more about it in our new article, now online and #openaccess with the Journal of Alloys and Compounds: https://lnkd.in/gbifPNXg #titanium #powdermetallurgy #metals #metallurgy #alloys #alloydesign #microstructure #mechanicalproperties #criticalmetals #materials #materialsscience #research #JWRI Osaka University

https://lnkd.in/gbst65dw "They found that the fast-oxidizing element chromium controlled early oxidation, stabilizing to create the inner oxide layer, while the slower-oxidizing elements manganese, iron, and cobalt diffused outward and dominated the outer layer. Nickel maintained crystalline stability of the base alloy, forming a layer beneath the oxidation." #Metallurgy #Oxidation

#PowderMetallurgy has a long tradition with a wide range of applications. However, the current boom around #AdditiveManufacturing has awakened this Sleeping Beauty of #Metallurgy and opened up further interesting applications. Ceramic-free and spherical #powders are of particular interest for #AM.   #ALDVacuumTechnology is the market and technology leader for vacuum inert gas atomizers used in the production of high-quality metal powders. In addition, #ALD has extensive experience in combining various melting technologies with inert gas atomization systems to address particular material requirements. Our clients can choose between two main atomizer types, namely #EIGA and #VIGA, for charge weights from 5 kg up to 2500 kg. Customized VIGA and EIGA design variations are available to meet customer specific requirements.   Vacuum induction melting and inert gas atomization is the leading process for production of a variety of high-performance metal powders and essential for quality manufacturing of Ni-based super-alloys as well as Fe-, Co-, Cr-based and other special alloy powders. In the VIGA system, a vacuum induction melting unit is integrated with an inert gas atomization unit. The starting materials are melted using electromagnetic induction and is atomized by a high-pressure inert gas jet.   The electrode induction melting process with inert gas atomisation was developed and patented by ALD as an alternative, ceramic-free melting and atomization process for the production of high-purity, reactive and refractory metal and precious metal powders. Today, the EIGA process is one of the leading processes for producing of high-quality powders from titanium, zirconium, niobium and tantalum alloys.   Don’t miss the opportunity to learn more about ALD’s Powder Metallurgy processes and how they are connected to Additive Manufacturing at #Formnex2024. You can find us in Hall 12, Booth B89!

TZM vs. Mo-La Alloys: A Comparative Analysis #TZMalloy #molaalloy When it comes to high-performance materials used in extreme environments, two alloys frequently come to the forefront: TZM (titanium-zirconium-molybdenum) and Mo-La (molybdenum-lanthanum). Both are derivatives of molybdenum and are prized for their superior mechanical properties and resistance to high temperatures.

Powder #Metallurgy Vol. 67, No. 2-3, out now. Cellulose-derived binders, #additivemanufacturing and steel #powder prepared by gas atomisation are among the topics discussed. Access the IOM3 journals here: https://bit.ly/4bMziDg