Results 31 to 40 of about 737 (179)
Hard machining of agricultural machines parts
Research in Agricultural Engineering, 2013 For the renovation and/or improvement of the surface properties of machine elements, hard facing is often used. Hard structures obtained in layers or by heat treatment achieve a hardness of up to 68 hardness (HRC) or even more.
R. Drlička +4 more
doaj +1 more source
Effects of rotational speed on the Al0.3CoCrCu0.3FeNi high-entropy alloy by friction stir welding
High Temperature Materials and Processes, 2020 Welding and relevant studies are indispensable to employ high-entropy alloys for practical applications. In this study, Al0.3CoCrCu0.3FeNi high-entropy alloy with single FCC phase was used to make “bead-on-plate” friction stir welds at different ...
Lin Po-Ting +4 more
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Experimental Investigation of Material Properties in FSW Dissimilar Aluminum-Steel Lap Joints
Metals, 2021 The friction stir lap welding of AA5083 H111 aluminum alloy and S355J2 grade DH36 structural steel was investigated. A polycrystalline cubic boron nitride with tungsten and rhenium additives tool was used.
Michelangelo Mortello +3 more
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Pulsed laser micro ablation of polycrystalline cubic boron nitride
Procedia CIRP, 2020 Polycrystalline cubic boron nitride (PcBN) is the second hardest material after diamond. Because of its unique properties, PcBN is extensively used as a cutting tool material for the machining of hardened steels. Pulsed laser ablation (PLA) offers the possibility to generate tailored microgeometries on PcBN tools and can thereby increase tool ...
Denkena, Berend +3 more
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Технічна інженерія, 2022 The use of hardened steels and high-hardness alloys provides the necessary mechanical and operational properties of machine parts and mechanisms, as a result of which the demand for the use of such materials is constantly growing.
A.O. , Yu.O. , S.A., S.An.
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Synthesis and Characterization of Polycrystalline Cubic Boron Nitride Composites with Al Binder [PDF]
Advances in Engineering Research, 2015 The PcBN materials were sintered from the cBN-Al systems under high-pressure and high-temperature, and the mechanical properties, composition and microstructure of prepared samples were analyzed. The results show that the microstructure is fairly even and the binding phase is uniformly distributed in its volume.
S.S. Xu, G.P. Sun, L. Liu
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A combined experimental–numerical investigation of fracture of polycrystalline cubic boron nitride [PDF]
Engineering Fracture Mechanics, 2013 Abstract Numerical modelling of a series of experimental Single Edge V-Notched Beam tests was carried out for a number of grades of polycrystalline cubic boron nitride using the finite volume method (FV) and cohesive zone model approach. The effect of notch root radius observed experimentally was reproduced numerically via a unique CZM for each ...
Carolan, Declan +2 more
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Application of Polycrystalline Cubic Boron Nitride for Cutting Tools.
THE REVIEW OF HIGH PRESSURE SCIENCE AND TECHNOLOGY, 1994 Polycrystalline cubic boron nitride (pcBN) materials, which are produced by sintering cBN powder and binder material under ultra-high pressure and temperature conditions, have so high hardness, high thermal conductivity and very weak affinity for ferrous metals that pcBN has been used for cutting ferrous metals such as hardened steel, cast iron, powder
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Microstructures and mechanical properties of PCBN materials
Jin'gangshi yu moliao moju gongcheng, 2022 The PCBN material was prepared by high temperature and high pressure method at 1 500℃ and different holding times with CBN-TiN-Ti-Al2O3 as the initial raw material. The phase compositions, microstructures, mechanical properties and cutting performance of
Bin ZHANG, Hongyi GUO
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Advanced Science, EarlyView.Liquid metal catalysts are widely assumed to promote high‐quality 2D growth. In this work, operando experiments and machine‐learning‐accelerated simulations show that hBN on Cu breaks this graphene‐derived expectation, where molten Cu promotes multilayer/3D growth, but re‐solidified single‐crystal Cu stabilizes monolayer formation.
Nikoo Ghanadan +17 more
wiley +1 more source