Results 61 to 70 of about 5,815 (226)

Marine Shaft Steels (AISI 4140 and AISI 5120) Predicted Fracture Toughness by FE Simulation

open access: yesMedžiagotyra, 2017
Optimal selection of material can be considered as one of the most critical steps in engineering design process. That is especially emphasized when dealing with constructions that operate in marine environment; high stresses and harsh operating ...
Goran VUKELIC, Josip BRNIC
doaj   +1 more source

Influencia del tratamiento térmico de bonificado en las propiedades corrosivas de la aleación AISI/SAE 4140 [PDF]

open access: yes, 2019
La evolución humana a lo largo de los años ha dependido notablemente no solo en el aprovechamiento de los recursos naturales, sino también en la transformación y generación de valor de los bienes disponibles en el planeta.
Mejía Rincón, David   +1 more
core  

Evaluation of wear and friction properties of graphite modified Lubri polylactic acid with various infill fabricated by additive manufacturing techniques

open access: yesPolymer Composites, Volume 45, Issue 17, Page 16133-16152, 10 December 2024.
The Graphical Abstract is proper for publication. Abstract Three‐dimension (3D) printing technology, also known as additive manufacturing, is a manufacturing technology that creates three‐dimensional objects by depositing material layer by layer, as opposed to subtractive manufacturing methods. However, the newness of the technology brings with it many
Şenol Şirin   +4 more
wiley   +1 more source

A response surface methodology and desirability approach for predictive modeling and optimization of cutting temperature in machining hardened steel [PDF]

open access: yes, 2014
This paper presents an experimental investigation on cutting temperature during hard turning of EN 24 steel (50 HRC) using TiN coated carbide insert under dry environment.
Ashok Kumar Sahoo, Purna Chandra Mishra
core   +1 more source

Fatigue Limit Estimation for Post‐Peened Induction‐Hardened and Tempered Steel Considering Changes in Surface Properties

open access: yesFatigue &Fracture of Engineering Materials &Structures, Volume 47, Issue 12, Page 4607-4617, December 2024.
ABSTRACT Shot peening (SP) and fine particle peening (FPP) were performed as post‐treatments on induction‐hardened and tempered AISI 4140 steels. Furthermore, the combined effects of surface characteristics including changes in surface morphology, compressive residual stress, and hardness on the fatigue limit were quantitatively examined.
Shogo Takesue   +3 more
wiley   +1 more source

An Energy Efficient Turning Process for Hardened Material with Multi-Criteria Optimization [PDF]

open access: yes, 2016
This paper presents a systematic procedure for the optimization of machining parameters such as cutting speed, feed rate, nose radius, edge radius, and rake angle to reduce specific material removal energy and improve energy efficiency in the hard ...
Hong-Seok Park   +2 more
core   +1 more source

Ispitivanje čelične legure AISI 4140

open access: yes, 2021
The task of the work was to investigate the steel alloy AISI 4140, to determine the chemical properties and test procedure of metallography and microstructure, and to interpret the material and mechanical properties of the selected material. A product in the Fusion 360 software program from thin-sheet metal forming technology was further designed.
openaire   +2 more sources

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

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

Progressive Tool Wear in Cryogenic Machining: The Effect of Liquid Nitrogen and Carbon Dioxide

open access: yesJournal of Manufacturing and Materials Processing, 2018
This experimental study focuses on various cooling strategies and lubrication-assisted cooling strategies to improve machining performance in the turning process of AISI 4140 steel.
Yusuf Kaynak, Armin Gharibi
doaj   +1 more source

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