Results 81 to 90 of about 35,257 (266)

Improve on Corrosion Resistant Surface for AISI 4140 Steel Coated with VN and HfN Single Layer Films

International Journal of Electrochemical Science, 2013
To improve the corrosion resistance of different industrials application, we studied vanadium nitride (VN) and hafnium nitride (HfN) single layer thin film, which were deposited onto Si (100) and AISI 4140 steel substrates via r.f.
C. Escobar, J.C. Caicedo, W. Aperador, A. Delgado, P. Prieto   +4 more
doaj   +1 more source

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

International 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

Fatigue &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, Keisuke Ono, Toshihiko Yoshimura, Masataka Ijiri   +3 more
wiley   +1 more source

Deep Cryogenic treatment: a bibliographic review [PDF]

, 2008
The use of cryogenic treatment (CT) to improve mechanical properties of materials has been developed from the end of the Sixties. At the present time, the initial mistrust about CT has been cleared up and many papers about different materials reporting ...
Baldissera, Paolo, Delprete, Cristiana
core   +2 more sources

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

Journal 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, I. Masitah, F. B. Susetyo, D. Nanto   +3 more
semanticscholar   +1 more source

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

Engineering 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, T. V. Sreerama Reddy, Chandrashekar Anjinappa, B. Omprakash, Abdul Razak, Anteneh Wogasso Wodajo   +5 more
wiley   +1 more source

Welding of stell ABNT4140 without posterior thermal treatment.

Revista 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, Willys Machado Aguiar   +1 more
doaj  

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

Tehnički 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, Hediye Kirli Akin, Funda Kahraman, Yusuf Fedai   +3 more
doaj   +1 more source

PENGARUH KECEPATAN AIR SIRKULASI SEBAGAI MEDIUM QUENCHING TERHADAP KEKERASAN DAN STRUKTUR MIKRO PADA BAJA AISI 4140 [PDF]

, 2006
Abstrak Baja karbon yang dipanaskan sampai pada suhu austenit kemudian didinginkan secara cepat akan terbentuk struktur martensit yang memiliki kekerasan yang lebih tinggi dari struktur perlit maupun ferit , proses ini biasa dikenal dengan ...
HARYADI, Gunawan Dwi
core  

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

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