نتایج جستجو برای: ultra fine grained materials

تعداد نتایج: 601428  

2012
Xiao Ling Daniel S. Weld

Entity Recognition (ER) is a key component of relation extraction systems and many other natural-language processing applications. Unfortunately, most ER systems are restricted to produce labels from to a small set of entity classes, e.g., person, organization, location or miscellaneous. In order to intelligently understand text and extract a wide range of information, it is useful to more prec...

2008
ANDREAS GRÄVINGHOFF JÖRG KELLER

Fine-grained multithreading can be used to hide longlatency operations encountered in parallel computers during remote memory access. Instead of using special processor hardware, the emulation of fine-grained multithreading on standard processor hardware is investigated. While emulation of coarse-grained multithreading is common in modern operating systems, in the fine-grained case research on ...

2018
Yuhui Wang Baodong Shi Yanming He Hongwang Zhang Yan Peng Tiansheng Wang

A Fe-34.5 wt % Mn-0.04 wt % C ultra-high Mn steel with a fully recrystallised fine-grained structure was produced by cold rolling and subsequent annealing. The steel exhibited excellent cryogenic temperature properties with enhanced work hardening rate, high tensile strength, and high uniform elongation. In order to capture the unique mechanical behaviour, a constitutive model within finite str...

1997
H. K. D. H. Bhadeshia

Commercialised mechanically alloyed yttria dispersion strengthened alloys exhibit unusual recrystallisation behaviour. In spite of their large stored energy content, they tend to recrystallise at temperatures close to melting. The recrystallised microstructure is often very coarse and highly anisotropic, characterised by columnar grains. Such a microstructure is often referred to as being “dire...

2018
Jiří Kozlík Josef Stráský Petr Harcuba Ilya Ibragimov Tomáš Chráska Miloš Janeček

Ti Grade 2 was prepared by cryogenic attritor milling in liquid nitrogen and liquid argon. Two types of milling balls were used—stainless steel balls and heavy tungsten carbide balls. The effect of processing parameters on particle size and morphology, contamination of powder and its microhardness was investigated. Milling in liquid nitrogen was not feasible due to excessive contamination by ni...

2000
J. A. KNAPP D. M. FOLLSTAEDT J. C. BANKS

Very fine-grained Ni and Cu films were formed using pulsed laser deposition on fised silica substrates. The grain sizes in the films were characterized by electron microscopy, and the mechanical properties were determined by ultra-low load indentation, with iinite-element modeling used to separate the properties of the layers from those of the substrate. Some Ni films were also examined after a...

2002
F. Lamas C. Irigaray J. Chacón

Fine-grained, more or less cohesive carbonate materials are extremely widespread in terms of surface area and are, therefore, commonly used as materials to construct impermeable cores for dams. However, it has not been adequately documented whether the carbonate content in fine-grained soils significantly affects their engineering behaviour. The present study shows that the carbonate content su...

Journal: :Materials transactions 2021

Although severe plastic deformation causes grain refinement of polycrystalline materials, saturation is known to be caused by simultaneous coarsening. In the present study, for ultra-fine-grained (UFG) pure Al prepared equal-channel angular pressing, we studied and coarsening processes during large simple-shear using scanning electron microscopy/electron backscatter diffraction. The changes cry...

2002
ALEXANDER WANNER DAVID C. DUNAND

The availability of high-energy X-rays from 3rd-generation synchrotron sources offers new approaches to study internal stresses in the bulk of crystalline materials. A method with a wide application potential is the transmission technique introduced by Daymond and Withers, which however has so far been limited to fine-grained materials. In the present work, the reasons for the currently existin...

2018
Arash Vahabzadeh Andrea Stocco Ali Mesbah

As a software system evolves, its test suite can accumulate redundancies over time. Test minimization aims at removing redundant test cases. However, current techniques remove whole test cases from the test suite using test adequacy criteria, such as code coverage. This has two limitations, namely (1) by removing a whole test case the corresponding test assertions are also lost, which can inhib...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید