Results 1 to 10 of about 36,648 (255)

Effect of bimodal WC particle size and binder composition on the morphology of WC grains in WC–Co–Ni3Al cemented carbides

open access: yesJournal of Materials Research and Technology, 2021
In addition to dispersed nanoparticles in the binder phase, the effect of Ni3Al on the growth mechanism of tungsten carbide (WC) grains is also essential for the fabrication of high-quality of cemented carbides.
Yingbiao Peng   +6 more
doaj   +1 more source

Prediction the Initiation of Pitting Corrosion Depending on Carbides in the Microstructure of 304 Stainless Steel [PDF]

open access: yesEngineering and Technology Journal, 2017
Stainless steel has excellent corrosion resistance due to formation oxides protective films in many environments. When steel exposed to temperature in the range of (500-900) ºC, the carbon in the structure will be effective to react with chromium in the ...
S. I.Alrubaiey, Sh. F.Hasan
doaj   +1 more source

Modification of cast alloys nanostructured material

open access: yesЛитьë и металлургия, 2021
The third article of the series devoted to the application of nanomaterials and nanotechnologies in industry in general and, first of all, in metallurgy, materials science and foundry is presented. This article deals with the use of nanomaterials for the
P. A. Vitiaz   +4 more
doaj   +1 more source

WEAR RESISTANCE OF MULTI-COMPONENT COMPOSITE COATINGS APPLIED BY CONCENTRATING ENERGY FLOWS [PDF]

open access: yesProceedings on Engineering Sciences, 2019
In this work are presented the results of comparative tests of the abrasion wear characteristics and the wear resistance of new coatings from multi-component composite materials.
M. KANDEVA   +4 more
doaj   +1 more source

The effect of boron on the amount and type of carbides in chromium white irons [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
The effect of boron, in the amounts of 0.26, 0.39, and 0.59 wt.%, on the volume fraction and structure of carbides in Cr white irons was examined. It was demonstrated that the addition of boron can change the microstructural characteristics of white iron
Tomović-Petrović Stanka M.   +2 more
doaj   +1 more source

Secondary Hardness and Heat Resistance of High-Speed Steels

open access: yesУспехи физики металлов, 2020
This paper presents the research results concerning factors affecting the secondary hardness and heat resistance of high-speed steels. Processing parameters making possible to achieve the necessary levels of heat resistance and hardness are considered ...
O. V. Movchan, K. O. Chornoivanenko
doaj   +1 more source

Microstructure Evolution and Fracture Mechanism of 55NiCrMoV7 Hot-Working Die Steel during High-Temperature Tensile

open access: yesMetals, 2023
In this paper, through high-temperature tensile tests of 55NiCrMoV7 steel, high-temperature fracture behavior, microstructure evolution, and carbide distribution characteristics of both the thermal–mechanical coupling zone (fracture zone) and thermal ...
Yasha Yuan   +4 more
doaj   +1 more source

Effect of ball-milling process in combination with the addition of carbide microparticles on the microstructure and wear resistance of a Co–Cr–W alloy prepared by powder metallurgy method

open access: yesMaterials Research Express, 2021
Co–Cr–W alloys were widely used in the inlet exhaust valve of aeroengine. However, the traditional manufacturing process of Co–Cr–W alloys can not meet the demand for higher comprehensive performance, and an optimum method needs to be developed.
S Y Wang   +7 more
doaj   +1 more source

Aging Phenomena during In-Service Creep Exposure of Heat-Resistant Steels

open access: yesMetals, 2019
An investigation of aging phenomena during creep exposure has been conducted for HP-Nb cast reformer tubes for several exposure conditions. Aging was manifested by carbide precipitation, carbide coarsening, and carbide transformation.
G. N. Haidemenopoulos   +7 more
doaj   +1 more source

Improving the Wear Resistance of Ledeburitic Tool Steels by a Combination of Semi-Solid and Cryogenic Processing

open access: yesMetals, 2022
Ledeburitic tool steel X210Cr12 was processed by passing through a semi-solid state with subsequent forming on a hydraulic press, thus achieving a fine-grained martensitic matrix, uniformly dispersed fine precipitates, and removal of sharp-edged primary ...
Hana Jirková   +4 more
doaj   +1 more source

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