Results 31 to 40 of about 13,468 (252)
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
doaj +1 more source
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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Phase boundary between Na-Si clathrates of structures I and II at high pressures and high temperatures [PDF]
, 2016 Understanding the covalent clathrate formation is a crucial point for the design of new superhard materials with intrinsic coupling of superhardness and metallic conductivity.
Godec, Yann Le +5 more
core +3 more sources
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.
doaj +1 more source
Journal of Materials Research and Technology, 2019 The microstructure and mechanical properties of 8-mm-thick friction stir welded SAF 2507 super duplex stainless steel pipe was examined. High-quality welds were successfully produced using polycrystalline cubic boron nitride (PCBN) tool, force control ...
Rafael Arthur Reghine Giorjão +6 more
doaj +1 more source
van der Waals epitaxy of monolayer hexagonal boron nitride on copper foil : growth, crystallography and electronic band structure [PDF]
, 2015 We investigate the growth of hexagonal boron nitride (h-BN) on copper foil by low pressure chemical vapour deposition (LP-CVD). At low pressure, h-BN growth proceeds through the nucleation and growth of triangular islands.
Asensio, Maria-Carmen +8 more
core +1 more source
Tool Wear Inspection of Polycrystalline Cubic Boron Nitride Inserts [PDF]
In industry, highly frequent inspection of tooling used to machine safety critical components is common place. Worn or damaged tools produce undesirable surface finishes leading often to early failure of the part due to fatigue crack growth. In the development stages of polycrystalline boron nitride tools, the tool wear inspection technique is an off ...
Wickramarachchi, C. +4 more
openaire +2 more sources
An in-depth investigation of the cutting speed impact on the degraded microstructure of worn PCBN cutting tools [PDF]
, 2011 The impact of an increased cutting speed on the degradation of a low content polycrystalline cubic boron nitride (PCBN) tool material is investigated by advanced microscopy techniques. The locally affected microstructure of worn PCBN cutting tools, after
Andrén, Hans-Olof, Angseryd, Jenny
core +1 more source
Thermodynamic aspects of materials' hardness: prediction of novel superhard high-pressure phases
, 2011 In the present work we have proposed the method that allows one to easily estimate hardness and bulk modulus of known or hypothetical solid phases from the data on Gibbs energy of atomization of the elements and corresponding covalent radii.
Aleshin V. G. +21 more
core +1 more source