Results 21 to 30 of about 10,597 (207)

Influence of Plastic Strain Control on Martensite Evolution and Fatigue Life of Metastable Austenitic Stainless Steel

open access: yesMetals, 2022
Metastable austenitic stainless steel was investigated during fatigue tests under strain control with either constant total or constant plastic strain amplitude.
Matthias Droste   +3 more
doaj   +1 more source

Synthesis and Properties of Bulk Nanostructured Metallic Materials

open access: yesMetals, 2018
Bulk nanostructured materials (BNMs) are defined as polycrystalline bulk solids with nanocrystalline (NC) or ultrafine-grained (UFG) microstructures. [...]
Byungmin Ahn
doaj   +1 more source

High-temperature mechanical behavior of polycrystalline yttrium-doped barium cerate perovskite [PDF]

open access: yes, 2011
The high-temperature mechanical properties of the mixed ionic-electronic conductor perovskite BaCe0.95Y0.05O3-δ with average grain size of 0.40μm have been studied in compression between 1100 and 1300°C in air at different initial strain rates.
Jiménez Melendo, Manuel   +4 more
core   +1 more source

Ultrafine-Grained Metals

open access: yesMetals, 2015
Ultrafine-grained (UFG) metallic materials are at the cutting edge of modern materials science as they exhibit outstanding properties which make them very interesting for prospective structural or functional engineering applications. [...]
Heinz Werner Höppel
doaj   +1 more source

Breakdown of the superplastic deformation behavior of heterogeneous nanomaterials at small length scales

open access: yesMaterials Research Letters, 2021
Ultrafine-grained and nanocrystalline materials frequently show an enhanced rate sensitivity of their mechanical behavior, which is generally assumed to be the consequence of interface sliding or thermally activated dislocation processes at the ...
Patrick Feldner   +2 more
doaj   +1 more source

Micro-deformation behavior in micro-compression with high-purity aluminum processed by ECAP

open access: yesManufacturing Review, 2015
Ultrafine-grained (UFG) materials have a potential for applications in micro-forming since grain size appears to be the dominant factor which determines the limiting size of the geometrical features.
Xu Jie   +4 more
doaj   +1 more source

Zjemňování zrna protlačované hořčíkové slitiny AZ31 procesem Ecap [PDF]

open access: yes, 2017
Extruded Mg – 3%Al – 1% Zn (AZ31) magnesium alloy was subjected to ECAP (Equal Channel Angular Pressing) processing at 523 K (250 °C). At the processing temperature of 523 K, fine grains with the average grain size of 2 – 3 μm are formed as a result of ...
Hilšer, Ondřej   +3 more
core   +1 more source

High cycle fatigue of ARMCO iron severely deformed by ECAP [PDF]

open access: yes, 2017
The high-cycle fatigue behavior of ARMCO iron severely deformed by Equal Channel Angular Pressing (ECAP) at room temperature through route Bc until 8 passes, with an average grain size of ~365 nm, was studied and compared with the same material in the ...
Cabrera Marrero, José M.   +2 more
core   +2 more sources

On the origin of extremely high strength of ultrafine-grained Al alloys produced by severe plastic deformation [PDF]

open access: yes, 2010
Ultrafine-grained Al alloys produced by high pressure torsion are found to exhibit a very high strength, considerably exceeding the Hall-Petch predictions for the ultrafine grains.
Enikeev, Nariman   +4 more
core   +3 more sources

Grain Growth during Annealing of Ultrafine-Grained and Nanomaterials

open access: yesУспехи физики металлов
Ultrafine-grained metals and alloys with a submicrocrystalline structure in some cases demonstrate a set of unique properties, for example, high strength and hardness, low-temperature superplasticity at high strain rates, and improved electrical and ...
I.E. Volokitina, T.D. Fedorova, and D.N. Lavrinyuk
doaj   +1 more source

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