Results 101 to 110 of about 5,950 (223)

A review of the latest developments regarding the heat treatment effects on hardness, impact toughness, and microstructure in AISI 1040, 4140, and 4340 medium carbon structural steels

Discover Materials
This review compiles and compares recent research on the influence of various heat treatments on the hardness, impact toughness, and microstructural evolution of AISI 1040, 4140, and 4340 medium carbon structural steels.
Sharan Mudda, Ananda Hegde, Sathyashankara Sharma, B. M. Gurumurthy, Umanath R. Poojary   +4 more
doaj   +1 more source

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

Tribological Analysis of Laser-Cladded Martensitic and Mixed-Alloy Coatings: Correlating Microstructure, Hardness, and Wear Response

Journal of Manufacturing and Materials Processing
High-strength quenched and tempered steels such as EN 42CrMo4, widely used for marine shaft applications due to their high strength, toughness, and fatigue resistance, are nevertheless susceptible to surface degradation under severe dry sliding ...
Stavros K. Chionopoulos, Antonios Spyridakos   +1 more
doaj   +1 more source

Application of modern surface analytical tools in the investigation of surface deterioration processes [PDF]

Surface profilometry and scanning electron microscopy were utilized to study changes in the surface of polymers when eroded. The X-ray photoelectron spectroscopy (XPS) and depth profile analysis indicate the corrosion of metal and ceramic surfaces and ...
Buckley, D. H.
core   +1 more source

Advanced Rotorcraft Transmission (ART) program [PDF]

Work performed by the McDonnell Douglas Helicopter Company and Lucas Western, Inc. within the U.S. Army/NASA Advanced Rotorcraft Transmission (ART) Program is summarized.
Bossler, Robert B., Jr., Heath, Gregory F.   +1 more
core   +1 more source

Failure Analysis at the Kennedy Space Center [PDF]

, 2010
History has shown that failures occur in every engineering endeavor, and what we learn from those failures contributes to the knowledge base to safely complete future missions.
Salazar, Victoria L., Wright, M. Clara
core   +2 more sources

The Optimization of Severe Shot Peening Coverage for Enhanced Fatigue Performance of AISI 4140 Steel: A Combined Experimental and FE-Cell Approach

Journal of Manufacturing and Materials Processing
Shot peening is widely used to improve fatigue performance by introducing compressive residual stresses, but the influence of very high coverage levels on medium carbon steels such as AISI 4140 remains unclear.
Mohsen Forouzanmehr, Kazem Reza Kashyzadeh, Reza Namdar, Hadi Salavati, Hossein Darijani, Mahmoud Chizari   +5 more
doaj   +1 more source

Determination of Temperature-Dependent Elastic Constants of Steel AISI 4140 by Use of In Situ X-ray Dilatometry Experiments. [PDF]

Materials (Basel), 2020
Kiefer D, Gibmeier J, Stark A.
europepmc   +1 more source

PERENCANAAN GEAR BOX DAN ANALISIS STATIK RANGKA CONVEYOR MENGGUNAKAN SOFWARE CATIA V5 [PDF]

Conveyor merupakan alat untuk mengangkut bahan-bahan industri. Sedangkan Motor listrik, Gearbox, pulley belt, rangka dan sabuk karet (belt conveyor) ini adalah komponen dari conveyor, dimana komponen dari sabuk karet ini berfungsi untuk membawa sampah
Purwoko, Widyo, Yamin, Ing. Mohamad
core  

Experimental Investigation of Friction Effect on Liner Model Rolling Bearings for Large Diameter Thrust Bearing Design [PDF]

, 2012
Studying friction coefficient has significant importance, especially when dealing with high load and temperature applications that have frequent starting and stopping points.
K. Manisekar, M.S. Starvin, S. Babu
core