Results 1 to 10 of about 516,021 (237)

Exceptional fracture toughness of CrCoNi-based medium- and high-entropy alloys at 20 kelvin [PDF]

open access: yesScience, 2022
CrCoNi-based medium- and high-entropy alloys display outstanding damage tolerance, especially at cryogenic temperatures. In this study, we examined the fracture toughness values of the equiatomic CrCoNi and CrMnFeCoNi alloys at 20 kelvin (K).
Dong Liu   +12 more
semanticscholar   +1 more source

Constructing a Double Alternant “Rigid-Flexible” Structure for Simultaneously Strengthening and Toughening the Interface of Carbon Fiber/Epoxy Composites

open access: yesNanomaterials, 2022
An optimized “rigid-flexible” structure with multistage gradient modulus was constructed on carbon fiber (CF) surface via chemical grafting using “flexible” polyethyleneimine (PEI) and “rigid” polydopamine (PDA) between “rigid” CF and “flexible” epoxy ...
Susu Zhang   +5 more
doaj   +1 more source

The Effect of Nickel Contents on the Microstructure Evolution and Toughness of 800 MPa Grade Low Carbon Bainite Deposited Metal

open access: yesCrystals, 2021
In this work, three deposited metals with different nickel (Ni) contents were produced by active gas metal arc welding (GMAW) in order to explore the influence of Ni on the microstructure evolution and toughness of 800 MPa grade low carbon bainite ...
Jingwu Liu   +3 more
doaj   +1 more source

The Effects of Prior Austenite Grain Refinement on Strength and Toughness of High-Strength Low-Alloy Steel

open access: yesMetals, 2021
The effects of prior austenite grain (PAG) refinement on the mechanical properties of bainitic/martensitic steels not only come from itself, but also have more complex effects by affecting the substructure formed by coherent transformation. In this study,
Xiucheng Li   +6 more
doaj   +1 more source

Influence of Polyvinyl Alcohol Powder on the Mechanical Performance and Volume Stability of Sulfoaluminate–Portland Cement Composite

open access: yesCrystals, 2021
Cement quick repair materials generally have the defects of brittleness and early shrinkage. The modification of composite cement mortar by water-soluble glue powder—polyvinyl alcohol (PVA)—was studied in the condition of settled water cement ratio.
Yuhong He   +4 more
doaj   +1 more source

Quantitative prediction of effective toughness at random heterogeneous interfaces [PDF]

open access: yes, 2013
The propagation of an adhesive crack through an anisotropic heterogeneous interface is considered. Tuning the local toughness distribution function and spatial correlation is numerically shown to induce a transition between weak to strong pinning ...
Patinet, Sylvain   +2 more
core   +1 more source

Processing and mechanical characterization of Al2O3/Ni and Al2O3/Co composites by pressureless sintering of nanocomposite powders [PDF]

open access: yesProcessing and Application of Ceramics, 2018
Al2O3/Ni and Al2O3/Co nanopowder mixtures (with 3 vol.% of metallic phase) were synthesized by heterogeneous precipitation method. In order to increase the green strength, polypropylene carbonate (PPC) was used as a binder while preparing green compacts.
Betül Kafkaslioğlu Yildiz   +2 more
doaj   +1 more source

Heat Treatment Technology for Stainless Steel 316(L)

open access: yesУспехи физики металлов, 2022
Stainless steel 316 (also known in the literature as 1.4401) or 316L (also known as 1.4404) is alloyed steel with good corrosion resistance; so, it is widely used in modern steel tools.
F. Bahfie, K. I. Prawijaya, S.S. Lana, F. Nurjaman, W. Astuti, and D. Susanti
doaj   +1 more source

Overview of diffusion boriding problems in industrial applications

open access: yesZaštita Materijala, 2019
In this paper is systematized a review of the problem which occur during the execution of the boriding process, and which by its occurrence limit its wider and versatile industrial application.
Željko Stojanović, Sanja Stanisavljev
doaj   +1 more source

Mechanical properties and tribological characteristics of B4C-SiC ceramic composite in artificial seawater

open access: yesJournal of Asian Ceramic Societies, 2021
To improve the mechanical properties and tribological characteristics of boron carbide (B4C) ceramic, silicon carbide (SiC) as an incorporation phase was added into boron carbide matrix.
Wei Chen   +5 more
doaj   +1 more source

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