Results 51 to 60 of about 45,358 (226)

Development and Design and Heat Treatment of Production, Storage and Mine Drilling Pipes in Petroleum and Geothermal Industries

open access: yesDüzce Üniversitesi Bilim ve Teknoloji Dergisi, 2020
In this study, sequential anddifferent temperature heat treatments were applied to steels after austenatingheat treatment applied to different AISI steel types.
İsmail Topcu   +3 more
doaj   +1 more source

From Damage to Functionality: Remanufacturing of Thrust Roller Bearings by Tailored Forming

open access: yesAdvanced Engineering Materials, Volume 27, Issue 16, August 2025.
Herein, the wear and fatigue behavior of repaired bearing raceways with a new powder alloy is investigated using a FE8 test‐rig and an oscillating tribometer. The tests are compared with industrial manufactured bearings to evaluate the repair quality. The repair can extend the service life of the repaired bearing to that of a new bearing and improves ...
Felix Saure   +3 more
wiley   +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

An Atomic‐Scale View at γ’‐Fe4N as Hydrogen Barrier Material

open access: yesAdvanced Materials Interfaces, Volume 12, Issue 13, July 14, 2025.
This study demonstrates the efficacy of γ’‐Fe4N nitride layers, formed via gas nitriding, as hydrogen permeation barriers. Advanced characterization, hydrogen permeation analysis, and DFT calculations reveal a 20 fold reduction in hydrogen diffusion at room temperature.
Aleksander Albrecht   +11 more
wiley   +1 more source

Influence of single- and multi-stage austempering treatments on microstructure and mechanical properties of AISI 4140 steel

open access: yesTribology and Materials
The present study examined the impact of single- and multi-stage austempering treatments on microstructural changes and the mechanical properties of AISI 4140 steel. All specimens underwent an annealing treatment before undergoing austempering treatments.
M. Badaruddin   +3 more
semanticscholar   +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

Barkhausen Noise Assessment of the Surface Conditions Due to Deep Hole Drilling and Their Influence on the Fatigue Behaviour of AISI 4140

open access: yesMetals, 2018
In many technical fields, high-strength steels like AISI 4140 are commonly used for highly dynamically loaded parts. Increasing demands on weight, performance and efficiency of the automotive industry lead to increasing demands on material properties ...
Nikolas Baak   +4 more
doaj   +1 more source

The Effect of Quenching Process on The Microstructure and Hardness of AISI 4140 Steel

open access: yesJournal of Physics: Conference Series
Steel is a metal that has good strength widely used in industry, both in the construction and automotive fields as a protective material applied to the body of combat vehicles.
I. Basori   +3 more
semanticscholar   +1 more source

Process Parameters and Tool Design in Friction Stir Extrusion: A Sustainable Recycling Technique

open access: yesEngineering Reports, Volume 7, Issue 1, January 2025.
Friction stir extrusion is a solid‐state recycling technique based on severe plastic deformation supported by frictional heat. The paper considers the macrostructural, microstructural, and mechanical properties of the products and investigates different tool, mold, and machine designs.
Mostafa Akbari   +5 more
wiley   +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

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