Additional grain boundary strengthening in length-scale architectured copper with ultrafine and coarse domains [PDF]
, 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
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Thermal stability of the microstructure of severely deformed copper [PDF]
, 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
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Materials, 2022 Improving the balance of strength and toughness in structural materials is an ongoing challenge. Delamination and grain refinement are some of the methods used to do this. In this paper, two different steels, 0.15% C–0.3% Si–1.5% Mn–Fe and 0.4% C–2% Si–1%
Tadanobu Inoue, Y. Kimura
semanticscholar +1 more source
The mechanical behaviour of an ultrafine grained Ti-47Al-2Cr (at%) alloy in tension and compression and at different temperatures [PDF]
, 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
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Helium bubble formation in ultrafine and nanocrystalline tungsten under different extreme conditions [PDF]
, 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
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Thermal Stability and Mechanical Properties of Al-Zn and Al-Bi-Zn Alloys Deformed by ECAP
Metals, 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
A Lifetime of Research in Creep, Superplasticity, and Ultrafine‐Grained Materials
Advanced Engineering Materials, 2019 A long‐term career at the University of Southern California, followed by an appointment at the University of Southampton, provided an opportunity to conduct extensive research into the flow behavior of polycrystalline metals.
T. Langdon
semanticscholar +1 more source
High-temperature mechanical behavior of polycrystalline yttrium-doped barium cerate perovskite [PDF]
, 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
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Metals, 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
A multiscale phenomenological constitutive model for strain rate dependent tensile ductility in nanocrystalline metals [PDF]
, 2014 Acknowledgments No external funding was received for this project.Peer ...
El Sayed, Tamer, Siddiq, M. Amir
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