Results 21 to 30 of about 5,080,543 (255)

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

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

Principles of superplasticity in ultrafine-grained materials [PDF]

open access: yesJournal of Materials Science, 2007
Ultrafine-grained materials are attractive for achieving superplastic elongations provided the grains are reasonably stable at elevated temperatures. Since the strain rate in superplasticity varies inversely with the grain size raised to a power of two, a reduction in grain size to the submicrometer level leads to the occurrence of superplastic flow ...
Kawasaki, M., Langdon, T.G.
openaire   +2 more sources

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

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

Characterizing Ultrafine Grained Material using EBSD [PDF]

open access: yesMicroscopy and Microanalysis, 2009
Extended abstract of a paper presented at Microscopy and Microanalysis 2009 in Richmond, Virginia, USA, July 26 – July 30 ...
A Deal   +4 more
openaire   +1 more source

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

Cyclic Deformation Of Nanocrystalline And Ultrafine-Grained Nickel

open access: yes, 2009
The cyclic deformation behavior Of ultrafine-grained (UFG) Ni samples synthesized by the electrodeposition method was studied. Different from those made by severely plastic deformation, the UFG samples used in this study are characterized by large-angle ...
Cheng S   +7 more
core   +1 more source

Report of International NanoSPD Steering Committee and statistics on recent NanoSPD activities

open access: yes, 2014
The Université de Lorraine in Metz, France, is the selected site for the 6th International Conference on Nanomaterials by Severe Plastic Deformation (NanoSPD6) following a series of five earlier conferences.
Valiev, R.Z., Langdon, T.G.
core   +1 more source

Noise‐Limited Bit Precision in Ferroelectric Synaptic Transistors for High‐Resolution Neuromorphic Computing

open access: yesAdvanced Functional Materials, EarlyView.
Low‐frequency noise spectroscopy defines the resolvable conductance states of synaptic FeFETs by coupling read‐current fluctuation with usable dynamic range. The resulting noise‐limited bit precision establishes a universal, device‐agnostic reliability metric beyond the memory window, enabling quantitative benchmarking and rational design of high ...
Jaehong Park   +12 more
wiley   +1 more source

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