Results 71 to 80 of about 4,788 (225)

A portable load cell for in-situ ore impact breakage testing [PDF]

open access: yes, 2002
This paper discusses the design and characterisation of a short, and hence portable impact load cell for in-situ quantification of ore breakage properties under impact loading conditions.
Banini, George, Bourgeois, Florent
core   +1 more source

Multifunctional electroless nickel boron composite coatings incorporated by magnesium diboride ceramic particles

open access: yesInternational Journal of Ceramic Engineering &Science, Volume 6, Issue 6, November 2024.
Abstract In this study, the role of MgB2 in composite coatings is pivotal. Electroless Ni–B plating, a current‐free chemical reduction process, deposits nickel–boron coatings. Other than MgB2, reinforcements like SiC, B4C, and so forth are used with Ni–B coatings for improved properties.
Ferhat Bülbül, Adem Kara
wiley   +1 more source

Modeling and optimization of face milling process parameters for AISI 4140 steel

open access: yesTehnički Glasnik, 2018
In this study, the effect of cutting parameters such as the depth of cut, feed rate, cutting speed and the number of inserts on surface roughness were investigated in the milling of the AISI 4140 steel.
Gokhan Basar   +3 more
doaj   +1 more source

Estimating the fatigue limits for quenched and tempered steel rods treated with multifunction cavitation considering residual stress, hardness, and surface pits

open access: yesFatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 11, Page 4000-4011, November 2024.
Abstract In this study, multifunction cavitation (MFC) was performed on low‐alloy steel (AISI 4140 steel) rods with different hardnesses to increase their fatigue limit. It was found that a high compressive residual stress was generated on the surface of steel rods by MFC and that the magnitude of the compressive residual stress tended to increase with
Shoichi Kikuchi   +3 more
wiley   +1 more source

Welding of stell ABNT4140 without posterior thermal treatment.

open access: yesRevista Tecnologia, 2009
The procedure for conventional welding of the AISI 4140 steel, due to the martensite formation in the heated affected zone (HAZ), contemplates a postwelding heat treatment (PWHT) to relief the stress and to improve the toughness of this zone.
Jesualdo Pereira Farias   +1 more
doaj  

Impact of cryogenic treatment on the performance of coated tungsten carbide inserts during machining of EN24 grade alloy steel

open access: yesEngineering Reports, Volume 6, Issue 9, September 2024.
This research presents the results of cry treated and untreated P20 grade carbide inserts for machining alloy steel (EN24 grade) under continuous turning circumstances. Abstract Today's industries need to be more productive, especially those that shape and machine materials.
R. Prem Chand   +5 more
wiley   +1 more source

Influence of the constitutive flow law in FEM simulation of the Radial forging process [PDF]

open access: yes, 2013
Radial forging is a widely used forming process for manufacturing hollow products in transport industry. As the deformation of the workpiece, during the process, is a consequence of a large number of high-speed strokes, the Johnson-Cook constitutive law (
Gueye, Babacar, Pantalé, Olivier
core   +7 more sources

Strain Dependence of the Magnetic Properties of AISI 4130 and 4140 Alloy Steels

open access: yesNDT & E International, 1988
The magnetic properties of ferromagnetic materials are very sensitive to the mechanical treatment and condition of the material [1]. Therefore magnetic methods for non destructive evaluation of the mechanical properties of steels have received increasing attention in recent years.
Jiles, D., Jiles, David, Utrata, D.
openaire   +3 more sources

Corrosion fatigue of high strength fastener materials in seawater [PDF]

open access: yes
Environmental effects which significantly reduce the fatigue life of metals are discussed. Corrosion fatigue is a major concern in the engineering application of high strength fasteners in marine environments.
Tipton, D. G.
core   +1 more source

Frictional and structural characterization of ion-nitrided low and high chromium steels [PDF]

open access: yes
Low Cr steels AISI 41410, AISI 4340, and high Cr austenitic stainless steels AISI 304, AISI 316 were ion nitrided in a dc glow discharge plasma consisting of a 75 percent H2 - 25 percent N2 mixture.
Spalvins, T.
core   +1 more source

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