Results 21 to 30 of about 43,266 (192)

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

Study of Helium Swelling and Embrittlement Mechanisms in SiC Ceramics

open access: yesCrystals, 2022
This work is devoted to the study of the radiation damage kinetics and subsequent embrittlement of the near-surface layer of SiC ceramics subjected to irradiation with low-energy He2+ ions.
Kymbat M. Tynyshbayeva   +5 more
doaj   +1 more source

The Phenomenon of Hydrogen Embrittlement in High-Strength Bolts [PDF]

open access: yesArchives of Metallurgy and Materials, 2023
The hydrogen embrittlement of metals is caused by the penetration and accumulation of hydrogen atoms inside the metal. The failure of the product due to hydrogen embrittlement is delayed in time and does not occur immediately after its manufacture, but ...
T. Dubiel, T. Balawender, M. Osetek
doaj   +1 more source

Compressive deformation of expanded polylactic acid resin subjected to quasi-static and dynamic loadings at wide temperatures

open access: yesMechanical Engineering Journal, 2016
Many kinds of polymer foams are used in various situations. Especially, polymer foams are often used for shock absorber, therefore, there are many studies focusing on the effect of strain rate on the compressive properties, such as strength and absorbed ...
Akifumi YOSHIMOTO   +3 more
doaj   +1 more source

Effect of Interstitial Oxygen on the Microstructure and Mechanical Properties of Titanium Alloys: A Review

open access: yesCrystals
Titanium alloys are of significant value in aerospace, biomedical, and marine engineering applications due to their excellent specific strength and favorable biocompatibility.
Yaojia Ren   +5 more
doaj   +1 more source

A three-dimensional multiscale model of intergranular hydrogen-assisted cracking [PDF]

open access: yes, 2010
We present a three-dimensional model of intergranular hydrogen-embrittlement (HE) that accounts for: (i) the degradation of grain-boundary strength that arises from hydrogen coverage; (ii) grain-boundary diffusion of hydrogen; and (iii) a continuum model
Ortiz, M., Rimoli, J. J.
core   +1 more source

Recovery of neutron-irradiated VVER-440 RPV base metal and weld exposed to isothermal annealing at 343°C up to 2,000 h

open access: yesFrontiers in Nuclear Engineering
Neutron irradiation causes embrittlement of reactor pressure vessel (RPV) steels. Post-irradiation annealing is capable of partly or fully restoring the unembrittled condition.
Eberhard Altstadt   +6 more
doaj   +1 more source

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