Results 11 to 20 of about 10,597 (207)

Synthetic-Hydroxyapatite-Based Coatings on the Ultrafine-Grained Titanium and Zirconium Surface

open access: yesУспехи физики металлов, 2023
The development of biocompatible materials is a multidisciplinary task and requires the interaction of physicists, chemists, biologists, and physicians, since the functional reliability of materials depends on their biochemical, cellular, tissue, and ...
A. T. Turdaliev, M. A. Latypova, and E. N. Reshotkina
doaj   +1 more source

Crystal plasticity simulation of macroscopic yielding behavior of ultrafine-grained aluminum

open access: yesNihon Kikai Gakkai ronbunshu, 2016
High-strength, light-weight metal materials are required to improve safety and reduce transportation cost. Ultrafine-grained metals produced by severe plastic deformation have attracted interest as high-strength materials.
Yoshiteru AOYAGI
doaj   +1 more source

Additional grain boundary strengthening in length-scale architectured copper with ultrafine and coarse domains [PDF]

open access: yes, 2019
The strength of polycrystals is known to increase with decreasing grain size, known as Hall-Petch effect. However, this relationship fails to predict the strength of samples with a non-uniform distribution of grain sizes.
Hou, Xiaodong   +2 more
core   +1 more source

Helium bubble formation in ultrafine and nanocrystalline tungsten under different extreme conditions [PDF]

open access: yes, 2015
We have investigated the effects of helium ion irradiation energy and sample temperature on the performance of grain boundaries as helium sinks in ultrafine grained and nanocrystalline tungsten.
A. Hassanein   +48 more
core   +1 more source

Grain growth in ultrafine-grained Y-TZP ceramics [PDF]

open access: yes, 1997
Grain growth in dense ultrafine-grained (120–600 nm) tetragonal ZrO2-Y2O3 ceramics is studied as a function of temperature. At all temperatures investigated both segregation and phase partitioning occur.
Burggraaf, A.J.   +4 more
core   +8 more sources

Thermal stability of the microstructure of severely deformed copper [PDF]

open access: yes, 2006
Copper specimens were deformed by equal channel angular pressing (ECAP) up to 8 passes. The microstructure was studied by X-ray line profile analysis. The crystallite size is reduced to a few tens of nanometers even after the first ECAP pass and it does ...
Balogh, L.   +4 more
core   +1 more source

Thermal Stability and Mechanical Properties of Al-Zn and Al-Bi-Zn Alloys Deformed by ECAP

open access: yesMetals, 2021
It is well known that ultrafine grained and nanocrystalline materials show enhanced strength, while they are susceptible to thermally induced grain coarsening.
Hailong Jia   +6 more
doaj   +1 more source

The mechanical behaviour of an ultrafine grained Ti-47Al-2Cr (at%) alloy in tension and compression and at different temperatures [PDF]

open access: yes, 2011
A bulk ultrafine grained (UFG) Ti-47Al-2Cr (at%) alloy has been produced using a powder metallurgy process that combines high energy mechanical milling (HEMM) of a mixture of Ti, Al and Cr powders to produce a Ti/Al/Cr composite powder and hot isostatic ...
Cao, Peng   +4 more
core   +2 more sources

Microstructure of severely deformed metals from X-ray line profile analysis [PDF]

open access: yes, 2006
Two essentially different materials, cubic Ti(49.8)Ni(50.2) shape memory alloy and hexagonal AZ91 Mg alloy, were deformed by equal channel angular pressing (ECAP).
Gubicza, Jenő   +3 more
core   +1 more source

Potential of ultrafine grained materials as high performance penetrator materials

open access: yesEPJ Web of Conferences, 2012
The shear formability and the metal jet formability are important for the kinetic energy penetrator and the chemical energy penetrator, respectively. The shear formability of ultrafine grained (UFG) steel was examined, mainly focusing on the effects of ...
Lee C.S.   +3 more
doaj   +1 more source

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