Results 31 to 40 of about 821,476 (191)

High energy X-ray diffraction and small-angle scattering measurements of hydrogen fatigue damage in AISI 4130 steel

open access: yesJournal of Pipeline Science and Engineering, 2022
: Accurate lifetime predictions are critical for repurposing existing pipelines for hydrogen transmission as well as for developing novel steels which are minimally susceptible to lifetime degradation by hydrogen.
M.J. Connolly   +7 more
doaj   +1 more source

A comparative evaluation of microstructural and mechanical behavior of fiber laser beam and tungsten inert gas dissimilar ultra high strength steel welds

open access: yesDefence Technology, 2016
The influence of different welding processes on the mechanical properties and the corresponding variation in the microstructural features have been investigated for the dissimilar weldments of 18% Ni maraging steel 250 and AISI 4130 steel.
Jaiteerth R. Joshi   +4 more
doaj   +1 more source

Boriding and boronitrocarburising effects on hardness,wear and corrosion behavior of AISI 4130 steel [PDF]

open access: yesMatéria (Rio de Janeiro), 2019
The effects of boriding and boronitrocarburising surface treatments on the microstructure and mechanical properties of AISI 4130 steel have been investigated. Pack boriding was carried out at 1223 K for 5 h and 8 h, while the double treatment of boronitrocarburising consisted of salt bath nitrocarburising at 853 K for 6 h followed by pack boriding at ...
Ramdane Nora   +5 more
openaire   +3 more sources

A cohesive zone model to simulate the hydrogen embrittlement effect on a high-strength steel

open access: yesFracture and Structural Integrity, 2015
The present work aims to model the fracture mechanical behavior of a high-strength low carbon steel, AISI 4130 operating in hydrogen contaminated environment. The study deals with the development of 2D finite element cohesive zone model (CZM) reproducing
G. Gobbi, C. Colombo, L. Vergani
doaj   +3 more sources

Heterogeneously tempered martensitic high strength steel by selective laser melting and its micro-lattice: Processing, microstructure, superior performance and mechanisms

open access: yesMaterials & Design, 2019
Herein, we report the selective laser melting of AISI 4130 high strength steel and its micro-lattice with superior energy absorption capabilities based on a dual material processing and structural design approach.
Xinwei Li   +9 more
doaj   +1 more source

Analysis of microstructural changes during pulsed CO2 laser surface processing of AISI 316L stainless steel [PDF]

open access: yes, 2009
In the present contribution, a 1.5kW CO2 laser in pulsed wave mode was used to study the effects of laser processing parameters at specific energy fluence.
Chikarakara, Evans   +2 more
core   +2 more sources

Design Optimization and Simulation Analysis of Formula SAE Frame Using Chromoly Steel [PDF]

open access: yesЖурнал інженерних наук, 2019
Compliance with the rules and regulations of competition “Student Formula Car Racing” that conducted annually by the ‘Society of Automotive Engineers’ (SAE) India, the car frame must be designed and built with supreme priority. The major task posed is to
Kumar M. D.   +3 more
doaj   +1 more source

Gemini Surfactant Performance Evaluation as Inhibitive action of PAPM for Treatment of AISI steel Corrosion and Studying Temperatures Influence in Acidic Medium

open access: yesمجلة علوم ذي قار, 2019
To inhibit corrosion of the AISI 4130 steel in 1M H2SO4 solution at different temperatures, the gemini surfactant was used, namely N,N'-((1,4-phenylenebis(azanediyl)) bis (2-hydroxy propane-3,1-diyl)) bis (N,N-dimethyldecan-1-aminium) (PAPM).
Mushtaq Jerri Meften
doaj   +4 more sources

Phase Composition and Temperature Effect on the Dynamic Young’s Modulus, Shear Modulus, Internal Friction, and Dilatometric Changes in AISI 4130 Steel

open access: yesCrystals, 2023
Elastic properties of materials and their changes with temperature are important for their applications in engineering. In the present study the influence of phase composition and temperature of AISI 4130 alloy on Young’s modulus (Ed), shear modulus (Gd),
Lioudmila A. Matlakhova   +4 more
doaj   +1 more source

Experimental and numerical analysis on the martensitic transformation in AISI 304 steel sheets subjected to perforation by conical and hemispherical projectiles [PDF]

open access: yes, 2013
Lien vers la version éditeur: http://www.sciencedirect.com/science/article/pii/S0020768312004039In this work, an experimental and numerical analysis of the martensitic transformation in AISI 304 steel sheets subjected to perforation by conical and ...
Rodríguez-Martínez, José Antonio   +10 more
core   +1 more source

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