Results 1 to 10 of about 7,960,375 (256)

Synthesis of Bulk Zr48Cu36Al8Ag8 Metallic Glass by Hot Pressing of Amorphous Powders

open access: yesJournal of Manufacturing and Materials Processing, 2021
The critical cooling rate necessary for glass formation via melt solidification poses inherent constraints on sample size using conventional casting techniques.
Tianbing He   +3 more
doaj   +1 more source

Experimental study on dynamic mechanical behavior of frozen sandstone with different saturations

open access: yesMeitan kexue jishu, 2023
Water content is one of the critical factors affecting frost damage to rock masses in alpine regions. A dynamic disturbance load further complicates the issue.
Junce XU, Hai PU, Ziheng SHA
doaj   +1 more source

Nature of the Brittleness of Metals

open access: yesУспехи физики металлов, 2022
The brittleness of material is considered as a specific manifestation of mechanical behaviour under load, which appears in the instability of the strength characteristic value under conditions of non-uniformity of the stress–strain state (SSS).
Yu. Ya. Meshkov, G. P. Zimina, and N. M. Stetsenko
doaj   +1 more source

Sn-3.0Ag-0.5Cu/Sn-58Bi composite solder joint assembled using a low-temperature reflow process for PoP technology

open access: yesMaterials & Design, 2019
Package-on-Package (PoP) is a popular technology for fabricating chipsets of accelerated processing units. However, the coefficient of thermal expansion mismatch between Si chips and polymer substrates induces thermal warpage during the reflow process ...
Yu-An Shen   +6 more
doaj   +1 more source

Assessment of the Hot-Cracking Susceptibility of Welded Joints of the 7CrMoVTiB10-10 Bainitic Steel Used in Heat Exchangers

open access: yesEnergies, 2022
Bainitic steel containing approx. 2.25% Cr and 0.6 Mo with micro-additions of V, Ti, and B, designated as 7CrMoVTiB10-10 (T/P24), is one of the new construction materials used in new supercritical power units. The weldability of 7CrMoVTiB10-10 is defined
Janusz Adamiec
doaj   +1 more source

Radiation embrittlement of reactor pressure vessel materials of Rivne NPP unit 1 due to re-irradiation after recovery annealing

open access: yesЯдерна фізика та енергетика, 2019
The results of surveillance-specimens testing of re-irradiated after recovery annealing reactor pressure vessel (RPV) metal of Rivne NPP unit 1 are presented. The radiation strengthening and shift of critical temperature of brittleness for RPV base metal
M. G. Holiak   +6 more
doaj   +1 more source

Effect of temperature on the mechanical performance of plywood used in membrane-type LNG carrier insulation systems

open access: yesJournal of Wood Science, 2020
In this study, the mechanical performance of melamine–urea–formaldehyde (MUF) resin plywood composed of an orthotropic material, which is used as a structural material in liquefied natural gas (LNG) cargo containment systems (CCSs), is evaluated.
Seung-Joo Cha   +7 more
doaj   +1 more source

Dynamic Mechanical Behavior of the Frozen Red Sandstone under Coupling of Saturation and Impact Loading

open access: yesApplied Sciences, 2022
Saturation is one of the critical factors causing frost damage to rock masses in alpine regions, and dynamic stress perturbations further complicate the damage process.
Junce Xu, Hai Pu, Ziheng Sha
doaj   +1 more source

Influence of Antioxidant-Enhanced Polymers in Bitumen Rheology and Bituminous Concrete Mixtures Mechanical Performance

open access: yesAdvances in Materials Science and Engineering, 2015
This paper evaluates the effect of polymer enhancement with antioxidant in the rheological properties of bitumen and mechanical properties of bituminous concrete mixture (BCM).
Samer Dessouky   +3 more
doaj   +1 more source

Investigation of Main Control Factors Governing Gas-Bearing Capacity in Deep Marine Shales: Insights from Quantitative Characterization of Quartz of Multiple Origins

open access: yesEnergy Exploration & Exploitation
Deep shale gas in western Chongqing is a critical successor to conventional resources, but its distinct enrichment mechanisms make sweet-spot identification—particularly of productive layers—significantly challenging.
Weiwei Jiao   +6 more
doaj   +1 more source

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