Results 11 to 20 of about 6,670 (165)

Theoretical modelling of brittle-to-ductile transition load of KDP crystals on (001) plane during nanoindentation and nanoscratch tests

open access: yesJournal of Materials Research and Technology, 2020
KDP single crystals are widely used in inertial confinement fusion and high power lasers due to the wide transmission band, high laser damage threshold, large nonlinear optical coefficient, etc.
Chen Li   +4 more
doaj   +1 more source

Brittle-to-ductile transitions in glasses: Roles of soft defects and loading geometry [PDF]

open access: yesMRS Bulletin, 2021
14 pages, 6 figures (including Methods) + Supplementary Material (8 pages, 7 figures)
David Richard   +2 more
openaire   +4 more sources

Brittle-to-ductile transition in a fiber bundle with strong heterogeneity [PDF]

open access: yesPhysical Review E, 2013
8 pages, 9 ...
Kovacs, K.   +3 more
openaire   +5 more sources

The brittle-to-ductile transition in silicon

open access: yesMaterials Science and Engineering: A, 1988
Recent experiments on the brittle-ductile transition (BDT) of precracked specimens of Si show that the transition is sharp, and that the strain rate dependence of the transition temperature, Tc, is controlled by dislocation velocity. Etch pit observations show that dislocation generation from the crack tip begins at K just below KIc, from a small ...
Samuels, J, Roberts, S, Hirsch, P
openaire   +2 more sources

The material deformation modes of monocrystalline gallium antimonide (GaSb) under nano-scratching

open access: yesFrontiers in Materials, 2023
The deformation characteristics of GaSb are investigated by employing nano-scratch tests to understand the material removal mechanism during ultra-precision grinding.
Ziguang Wang   +7 more
doaj   +1 more source

The brittle-to-ductile transition in germanium

open access: yesActa Metallurgica et Materialia, 1994
Abstract The brittle-to-ductile transition in precracked germanium crystals has been studied experimentally. Germanium undergoes a “smooth” brittle-ductile transition, where the stress to fracture rises steadily with temperature, associated with dislocation activity around the crack front at temperatures well below the transition temperature.
Serbena, F, Roberts, S
openaire   +2 more sources

Dislocation dynamics and brittle-to-ductile transitions

open access: yesMaterials Science and Engineering: A, 1993
Abstract The validity of different types of models for crack-dislocation interactions and their effect on fracture is discussed. The brittle-to-ductile transition (BDT) in precracked silicon and sapphire can be described by a two-stage dynamic model based on dislocation motion to and around the crack tip.
Roberts, S, Ellis, M, Hirsch, P
openaire   +1 more source

Quantitative evaluation of fault-caprock sealing capacity: A case from Dabei-Kelasu structural belt in Kuqa Depression, Tarim Basin, NW China

open access: yesPetroleum Exploration and Development, 2015
Based on the tests of rock mechanics characteristics and the anatomy of field outcrop, the paper analyzed the deformation mechanism of faults in anhydrite-salt caprock and glutenite reservoir in Dabei-Kelasu structural belt in Kuqa Depression, Tarim ...
Xiaofei FU   +5 more
doaj   +1 more source

Rheological transitions in the middle crust: insights from Cordilleran metamorphic core complexes [PDF]

open access: yesSolid Earth, 2017
High-strain mylonitic rocks in Cordilleran metamorphic core complexes reflect ductile deformation in the middle crust, but in many examples it is unclear how these mylonites relate to the brittle detachments that overlie them.
F. J. Cooper, J. P. Platt, W. M. Behr
doaj   +1 more source

Depth‐Dependent Slow Earthquakes Controlled by Temperature Dependence of Brittle‐Ductile Transitional Rheology

open access: yesGeophysical Research Letters, 2023
The discovery of slow earthquakes illuminates the existence of a strange depth dependence of seismogenesis, which contradicts the common understanding of smooth brittle/seismic‐ductile/aseismic transition as going deeper into the earth's surface layers ...
Ryosuke Ando   +3 more
doaj   +1 more source

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