Himanshu S. Maurya’s Post

"Their high strength-to-weight ratio, good corrosion resistance and excellent thermal and electrical conductivity have exponentially increased the interest in aluminium alloys in the context of laser-based powder bed fusion (PBF-LB/M) production. Although Al-based alloys are the third most investigated category of alloys in the literature and the second most used in industry, their processing by PBF-LB/M is often hampered by their considerable solidification shrinkage, tendency to oxidation, high laser reflectivity and poor powder flowability. For these reasons, high-strength Al-based alloys traditionally processed by conventional procedures have often proved to be unprintable with additive technology, so the design and development of new tailored Al-based alloys for PBF-LB/M production is necessary. The aim of the present work is to explore all the challenges encountered before, during and after the PBF-LB/M processing of Al-based alloys, in order to critically analyse the solutions proposed in the literature and suggest new approaches for addressing unsolved problems. The analysis covers the critical aspects in the literature as well as industrial needs, industrial patents published to date and possible future developments in the additive market." Alessandra Martucci Alberta Aversa Mariangela Lombardi #additivemanufacturing #aluminum #alloys #aluminumalloys #metallurgy #processability #laser #powdermatallurgy

High-entropy #alloy #coatings High-entropy alloy (#HEA) coatings in the form of thin or thick films on substrates have been explored early in the 2000s even when bulk HEAs were found to be synthesizable and have promising properties. As the HEA concept and their core effects are similarly applicable to ceramic materials, research on HEA coatings included nitrides, carbides, oxides, and their mixed types. The conventional thin-film and thick-film technologies could be equally applied for HEA coatings and have been found to be successful in producing quality films. Moreover, promising properties and properties better than those of conventional coatings could be generated when proper HEA compositions and processes are designed. This chapter reviews conventional coatings and HEA coatings in thin and thick films as a good basis for future advanced studies. #metal #metallurgy https://lnkd.in/d4n7p2Kh

Discover our new Alloys Navigator tool!

Metal powders are finely divided metals or metal alloys in powder form. They can be produced through various methods, including atomization, electrolysis, and mechanical alloying. Metal powders have unique properties, such as high surface area, porosity, and reactivity, making them suitable for various applications. #MetalPowders #MetalPowderTechnology #PowderMetallurgy #AdditiveManufacturing #3DPrinting #MetalAdditiveManufacturing #PowderMetallurgyApplications #MetalPowderProduction #MetalPowderCharacterization #MetalPowderProcessing #Ultrananotech

𝗧𝗵𝗶𝗻𝗻𝗲𝗿 𝗶𝘀 𝗕𝗲𝘁𝘁𝗲𝗿: 𝗧𝗵𝗲 𝗥𝗲𝗺𝗮𝗿𝗸𝗮𝗯𝗹𝗲 𝗙𝗮𝘁𝗶𝗴𝘂𝗲 𝗦𝘁𝗿𝗲𝗻𝗴𝘁𝗵 𝗼𝗳 𝗧𝗵𝗶𝗻 𝗕𝗮𝗯𝗯𝗶𝘁𝘁 : In 1839 Isaac Babbitt patented several high tin and high lead alloys which are similar to modern formulations. Lead alloys have been virtually eliminated in modern applications due to lower strength and environmental considerations. The most common bearing lining material used in turbomachinery today is high tin babbitt. 𝘛𝘩𝘦 𝘧𝘰𝘳𝘮𝘶𝘭𝘢𝘵𝘪𝘰𝘯 𝘢𝘯𝘥 𝘤𝘩𝘢𝘳𝘢𝘤𝘵𝘦𝘳𝘪𝘴𝘵𝘪𝘤𝘴 𝘰𝘧 𝘵𝘩𝘦 𝘵𝘸𝘰 𝘮𝘰𝘴𝘵 𝘤𝘰𝘮𝘮𝘰𝘯 𝘣𝘢𝘣𝘣𝘪𝘵𝘵 𝘢𝘭𝘭𝘰𝘺𝘴 𝘢𝘳𝘦 𝘴𝘩𝘰𝘸𝘯 𝘪𝘯 𝘵𝘩𝘦 𝘢𝘵𝘵𝘢𝘤𝘩𝘦𝘥 𝘧𝘪𝘨𝘶𝘳𝘦. The babbitt on hydrodynamic bearings is a layer of sacrificial material covering the working face of the bearing. It is designed to be soft enough that contaminants can be embedded in it, thereby protecting the shaft or thrust runner. "𝗧𝗵𝗶𝗻 𝗯𝗮𝗯𝗯𝗶𝘁𝘁 𝗵𝗮𝘀 𝘀𝗶𝗴𝗻𝗶𝗳𝗶𝗰𝗮𝗻𝘁𝗹𝘆 𝗺𝗼𝗿𝗲 𝗳𝗮𝘁𝗶𝗴𝘂𝗲 𝗿𝗲𝘀𝗶𝘀𝘁𝗮𝗻𝗰𝗲 𝘁𝗵𝗮𝗻 𝗯𝗮𝗯𝗯𝗶𝘁𝘁 𝘁𝗵𝗶𝗰𝗸𝗻𝗲𝘀𝘀 𝗴𝗿𝗲𝗮𝘁𝗲𝗿 𝘁𝗵𝗮𝗻 𝟭𝟱 𝗺𝗶𝗹𝘀." This is data from an extreme test conducted with about ten times the normal static load to speed up the test results. 𝗕𝗮𝗯𝗯𝗶𝘁𝘁 𝗙𝗮𝘁𝗶𝗴𝘂𝗲 𝗗𝗮𝗺𝗮𝗴𝗲 𝗠𝗲𝗰𝗵𝗮𝗻𝗶𝘀𝗺: Oscillatory shaft motion adds an alternating pressure that impinges on the babbitt surface. Babbitt fatigues like the way potholes develop on a road surface. Surface cracks develop which propagate to the bond line below. The piece of babbitt detaches but is unable to leave the area because of the close clearance to the shaft. This piece of babbitt rattles around the pit, breaking into smaller bits that are carried away by the oil film. This action smooths the sides of the pit. Finally, all the pieces of loose babbitt are gone leaving a rounded smooth hole.

At Flight Metals, you can explore detailed information about titanium alloy AMS 6930, including its composition, mechanical properties, applications, and more. https://lnkd.in/daTcEtTu

The deposition of alloys or a multi-element compound from a single requires a target with several elements. Several solutions are available as depicted on this card. One can start with an alloy target. In many cases, the target is actually not an alloy but a fine-grained mixture of several elements. The easiness to use these targets comes at a price: a change of the coating composition can only be achieved by replacing the target with another composition. Segmented targets are composed of several pieces which can be replaced to change the composition [Sarhammar2014]. A similar approach is to drill holes in the target to foresee inserts [Braeckman2013]. Finally, the powder can be mixed and loosely compressed as starting material [Depla2021]. In some cases, it is possible to mix a metal and compound powder into a electrical conducting target. Porous thin films can be made by combining NaCl with Cu [Dedoncker2019].

22 sets of additively and conventionally manufactured samples have just returned from heat treatment - a crucial process step for tool steels - and are virtually already on their way to post-processing and testing. AMPOWER's Tool Steel study is coming to an end and I can barely wait to get the results in the near future.   For the study over 400 test specimen and parts have been printed by the AM community! Technologies include - Laser powder bed fusion - Binder Jetting - Metal Material Extrusion - Metal Selective Laser Sintering - Wrought Material   Materials include 8 different tool steels, among them: - D2 - M2 - H13 - 440C - 1.2709   Material testing includes - microstructure - porosity - hardness - wear resistance - surface roughness - charpy impact - green part strength - µCT scans

The main uses of titanium carbide powder include manufacturing hard alloys, grinding materials, cutting tools, molds, etc. Titanium carbide powder has high hardness, high melting point, good wear resistance, and chemical stability, making it widely used in many fields. In terms of specific applications, titanium carbide powder is commonly used in the following fields: Spraying and Coating: Laser cladding, plasma spraying , thermal spraying. #TiC #Matelpowder #Carbidepowder #Titaniumcarbide #Titanium