Results 21 to 30 of about 5,910 (249)

Green Energy Revolution and Substitution of Hydrocarbons with Hydrogen: Distribution Network Infrastructure Materials

open access: yesEnergies, 2023
Global warming is an accepted fact of life on Earth, posing grave consequences in the form of weather patterns with life-threatening outcomes for inhabitants and their cultures, especially those of island countries.
Reza Ghomashchi
doaj   +1 more source

Effect of Postweld Heat Treatment on Microstructure and Properties of Thick S11306 Ferritic Stainless Welded Joints

open access: yesMetals, 2022
This study investigated the evolution of microstructure and mechanical properties of 25 mm thick S11306 ferritic stainless steel welded joints during Post weld heat treatment (PWHT) by a series of tests, including the optical microscope observation ...
Xiaodong Hu   +4 more
doaj   +1 more source

Erosion Resistance and Particle Erosion-Induced Tensile Embrittlement of 3D-Selective Laser Melting Inconel 718 Superalloy

open access: yesMetals, 2019
We used selective laser melting (SLM) Inconel 718 (coded AS) to carry out three heat treatment processes: (1) double aging (coded A), (2) solid solution + A (coded SA), (3) homogenization + SA (coded HSA) in order to investigate the effects of ...
Jun-Ren Zhao   +2 more
doaj   +1 more source

Pure Hydrolysis of Polyamides: A Comparative Study

open access: yesChemistry, 2023
Polyamides (PAs) undergo local environmental degradation, leading to a decline in their mechanical properties over time. PAs can experience various forms of degradation, such as thermal degradation, oxidation, hydrothermal oxidation, UV oxidation, and ...
Mathis Mortensen Brette   +3 more
doaj   +1 more source

Measurement Uncertainty and Representation of Tensile Mechanical Properties in Metals

open access: yesMetals, 2021
The International Organization for Standardization Technical Committee for Metallic Materials—Tensile Testing stated in 2011 that temperature and strain rate variations would induce a change in the results of tensile tests, termed as the measurement ...
Tingdong Xu, Kai Wang, Shenhua Song
doaj   +1 more source

Scanning Kelvin Probe for Detection in Steel of Locations Enriched by Hydrogen and Prone to Cracking

open access: yesCorrosion and Materials Degradation, 2023
Hydrogen, due to corrosion processes, can degrade high strength steels (HSS) through embrittlement and stress corrosion cracking mechanisms. Scanning Kelvin probe (SKP) mapping of surface potential was applied, to visualize the locations with an ...
Andrei Nazarov   +2 more
doaj   +1 more source

SPECIFIC STRUCTURE OF EFFECTIVE MEMBRANE ALLOYS BASED ON NIOBIUM, VANADIUM AND ZIRCONIUM

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2021
With unique mechanical and functional properties, amorphous, nanocrystalline and matrix duplex microstructure membrane alloys based on group V elements actively contribute to the development of hydrogen energy.
E.D. Kurbanova   +2 more
doaj   +1 more source

Entropy-Driven Grain Boundary Segregation: Prediction of the Phenomenon

open access: yesMetals, 2021
The question is formulated as to whether entropy-driven grain boundary segregation can exist. Such a phenomenon would be based on the assumption that a solute can segregate at the grain boundary sites that exhibit positive segregation energy (enthalpy ...
Pavel Lejček, Siegfried Hofmann
doaj   +1 more source

Hardening Embrittlement and Non-Hardening Embrittlement of Welding-Heat-Affected Zones in a Cr-Mo Low Alloy Steel

open access: yesMetals, 2018
The embrittlement of heat affected zones (HAZs) resulting from the welding of a P-doped 2.25Cr-1Mo steel was studied by the analysis of the fracture appearance transition temperatures (FATTs) of the HAZs simulated under a heat input of 45 kJ/cm with ...
Yu Zhao, Qing Ma, Shenhua Song
doaj   +1 more source

Liquid Metal Embrittlement of Galvanized TRIP Steels in Resistance Spot Welding

open access: yesMetals, 2020
Liquid metal embrittlement (LME) in Zn-coated steels is a serious issue in automotive design. The risk of rising LME surface cracks in resistance spot welding (RSW) of Zn-coated high strength steels has triggered significant research activities across ...
Wook-Sang Jeon   +2 more
doaj   +1 more source

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