Results 31 to 40 of about 402 (182)

Microstructural Characterization Of Laser Heat Treated AISI 4140 Steel With Improved Fatigue Behavior

open access: yesArchives of Metallurgy and Materials, 2015
The influence of surface heat treatment using laser radiation on the fatigue strength and corresponding microstructural evolution of AISI 4140 alloy steel was investigated in this research.
Oh M.C., Yeom H., Jeon Y., Ahn B.
doaj   +1 more source

Pengaruh Proses Bubut Baja AISI 4140 terhadap Mental Workload dengan Metode NASA-TLX

open access: yesRekayasa Mesin, 2021
This study aims to analyze the mental workload with the experimental method when operating a lathe under two different conditions, namely by using cooling and without cooling.
Meri Rahmi   +2 more
doaj   +1 more source

Effect of austempering conditions on the microstructure and mechanical properties of AISI 4340 and AISI 4140 steels

open access: yesJournal of Materials Research and Technology, 2019
AISI 4340 and AISI 4140 are normally used for different structural applications in quenched and tempered state due to their high strength, high abrasion and fatigue resistance but they lack toughness. Presence of dual phase microstructure such as ferrite-
Mian Muhammad Bilal   +6 more
doaj   +1 more source

Surface Improvement of Shafts by Turn-Assisted Deep Cold Rolling Process

open access: yesMATEC Web of Conferences, 2016
It is well recognized that mechanical surface enhancement methods can significantly improve the characteristics of highly-stressed metallic components.
Prabhu Raghavendra   +4 more
doaj   +1 more source

NUMERICAL AND EXPERIMENTAL ANALYSIS OF RESIDUAL STRESSES GENERATED DURING HARDENING OFAISI 4140 BAR [PDF]

open access: yesTecnologia em Metalurgia, Materiais e Mineração, 2012
The aim of this work is to analyze the distribution of residual stresses resulting from the combination of volumetric changes due to heat gradients and phase changes occurring during the quenching process of an AISI/SAE 4140 steel cylinder.
Edwan Anderson Ariza Echeverri   +1 more
doaj   +1 more source

The effect of process parameters on microstructure and corrosion behavior of AISI 4140 steel modified by pulse plasma treatment

open access: yesJournal of Electrochemical Science and Engineering, 2022
The pulse plasma system is a surface modification method applied to steel samples. In the present study, the effect of the nozzle distance and pulse number parameters were investigated on the modification process.
Yıldız Yaralı Özbek   +1 more
doaj   +1 more source

Effect of the impact angles on the erosion wear resistance of borided AISI 4140 steel

open access: yesResults in Engineering
This study evaluates the erosive wear resistance of untreated AISI 4140 steel, borided AISI 4140 steel, and borided AISI 4140 steel subjected to diffusion annealing (DAP). Dual-phase FeB/Fe₂B and single-phase Fe₂B layers were obtained with thicknesses of
J. Martínez-Trinidad   +5 more
doaj   +1 more source

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

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

Amorphous Hydrogenated Silicon Carbide Interlayers: Chemical, Optical, and Tribological Behavior for Improving Adhesion of Carbon‐Based Films to Ferrous Alloy

open access: yesSurface and Interface Analysis, Volume 58, Issue 4, Page 246-261, April 2026.
ABSTRACT Diamond‐like carbon thin films have been gaining attention in the last years due to their unique properties, such as low friction coefficient and high wear resistance. However, the lack of adhesion between DLC coatings and ferrous alloys complicates their wider industrial application.
Vanessa Piroli   +10 more
wiley   +1 more source

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