Results 31 to 40 of about 5,950 (223)

Propriedades do aço AISI 4140 nitretado a gás [PDF]

open access: yesMatéria (Rio de Janeiro), 2017
RESUMO Nitretação está entre os tratamentos superficiais mais efetivos. Os principais benefícios da nitretação aos aços são o aumento da dureza, resistência ao desgaste, resistência à fadiga e resistência à corrosão. Com isso, este trabalho tem por objetivo avaliar a resposta do AISI 4140 a diferentes condições de nitretação, quanto às propriedades ...
Diehl, Igor Luis   +2 more
openaire   +4 more sources

The Effects of Shallow Cryogenic Process On The Mechanical Properties of AISI 4140 Steel

open access: yesGazi Üniversitesi Fen Bilimleri Dergisi, 2018
In this study, shallow cryogenic treatments were carried out for various holding time to AISI 4140 steel and the effects of heat treatment parameters on wear behavior, impact strength and tensile strength were investigated. Three different holding times
Eşref KIZILKAYA, İsmail OVALI
doaj   +1 more source

On the comparative cutting performance of nature inspired structured cutting tool in dry cutting of AISI/SAE 4140 [PDF]

open access: yes, 2015
In this study, femtosecond laser was used to create micro-structures on the flank face of a cutting tool. For the first time, a nature-inspired design (shape) of structure was created and explored.
Anis Fatima, Han X, Paul T Mativenga
core   +1 more source

Microstructure and Mechanical Properties of Modified AISI 4140 Steel with Addition of Cr and W Elements [PDF]

open access: yesArchives of Metallurgy and Materials
High-temperature environments require materials with exceptional properties, including strength, oxidation resistance, and wear resistance. Quenched and tempered (QT) AISI 4140 steel, a chromium-molybdenum low-alloy steel, is known for its superior ...
Gang Ho Lee   +4 more
doaj   +1 more source

Pressed and sintered AISI 4140 PM low alloy steel from gas atomised powders [PDF]

open access: yes, 2013
This paper is based on a presentation at Euro PM 2012 organised by EPMA in Basel, Switzerland on 16–19 September 2012In conventional PM of low alloy steels various alloying routes are used (fully prealloyed powders, diffusion alloying, elemental powders),
Jabbari Taleghani, Mohammad Ali   +2 more
core   +2 more sources

Microstructure authentication on mechanical property of medium carbon Low alloy duplex steels

open access: yesJournal of Materials Research and Technology, 2020
The present study emphasizes on the mechanical characterization of medium carbon AISI 1040 and 4140 duplex steels. AISI 1040 and 4140 steels are generally used as structural steels for varying applications, ranging from construction field material to ...
B.M. Gurumurthy   +5 more
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

The Residual Stress Relaxation Behavior of Weldments During Cyclic Loading [PDF]

open access: yes, 2013
Accurate measurement of residual stress is necessary to obtain reliable predictions of fatigue lifetime and enable estimation of time-to-facture for any given stress level.
A. Wick   +38 more
core   +3 more sources

PENGARUH VARIASI SUHU PADA PROSES SELF TEMPERING DAN VARIASI WAKTU TAHAN PADA PROSES TEMPERING TERHADAP SIFAT MEKANIS BAJA AISI 4140

open access: yesTeknika, 2015
PENGARUH VARIASI SUHU PADA PROSES SELF TEMPERING DAN VARIASI WAKTU TAHAN PADA PROSES TEMPERING TERHADAP SIFAT MEKANIS BAJA AISI ...
Desga Hinta Nandiawan   +2 more
doaj   +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

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