Results 11 to 20 of about 4,691 (261)
Materials & Design, 2023 The stress corrosion of pipeline steel was promoted by sulfate-reducing bacteria (SRB). However, the mechanism of SRB promoting stress corrosion is not clear. In this study, the effects of constant load, geometrical parameters and multi-pitting on stress
Dongxu Sun +5 more
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Engineering Reports, 2022 In the present work, the corrosion behavior of a twin‐roll cast WZ73 magnesium alloy is investigated by potentiodynamic polarization and climate chamber tests in different sodium chloride solutions.
Robert Hornig +3 more
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Modeling of Micro-Pit Evolution in Rolling or Strip-Drawing [PDF]
Journal of Tribology, 2000 The micro-plasto-hydrodynamic lubrication (MPHL) model of pit evolution is extended to account for the variation of sliding speed and strain rate in rolling and drawing processes. Results show that all of the following factors are important: pit angle, lubricant viscosity and pressure viscosity coefficient, material yield stress and sliding speed ...
M. P. F. Sutcliffe, H. R. Le, R. Ahmed
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Numerical modelling of micro‐pitting of gear teeth flanks
Fatigue & Fracture of Engineering Materials & Structures, 2003 ABSTRACTA two‐dimensional computational model for simulation of contact fatigue of gear teeth flanks is presented. In the model, it is assumed that the initial crack of length 0.015 mm is initiated at the surface due to previous mechanical or heat treatment of the material as well as a consequence of the running in process.
Fajdiga, Gorazd +3 more
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Nihon Kikai Gakkai ronbunshu, 2015 To reduce weight and improve efficiency of the power transmission, the gears must be miniaturized and lubricant viscosity must be lower. However, these changes will bring about augment of contact pressure and severe lubricating condition.
Yuko YASUE +3 more
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Journal of Materials Research and Technology, 2021 The effects of rare earth (RE) addition on the corrosion behavior of micro-alloyed steels in 3.5 wt.% NaCl solution were investigated elaborately through electrochemical tests and material characterization analyses. Results showed that the corrosion rate
Shen Zhang +4 more
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Pulsed Laser-Induced Micro-Pits: As Bone Stabilizers
Physics Procedia, 2011 AbstractMechanical interlocking concept is a crucial criteria for osseointegration which is based on micro-porous surface structures. Several surface treatment methods have been used to modify the surface morphology of titanium implants in order to increase the effective interfacial area.
Çelen S., Efeoglu C., Özden H.
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Improvement of Lubrication Performance by Micro Pit Surfaces
Tribology Online, 2008 This paper describes an investigation on improvement of lubrication performance by incorporating micropits on a surface with special focus on the arrangement of the micropits. Water lubricated experiments were conducted using a test rig in which parallel conformal sliding motion was produced between mechanical seal faces.
Yagi, Kazuyuki +3 more
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Analytical Elastostatic Contact Mechanics of Highly-Loaded Contacts of Varying Conformity
Lubricants, 2020 In applications requiring high load carrying capacity, conforming contacting pairs with a relatively large contact footprint are used. These include circular arc, Novikov, and Wildhaber gears found, for example, in helicopter rotors.
Patricia M. Johns-Rahnejat +2 more
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Reviews on Advanced Materials Science, 2022 This research focuses on the addition of low-cost rare earth metals (REMs) to improve the comprehensive properties of hyper duplex stainless steels (DSSs).
Wang Hang +6 more
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