Tensile strength of five metals and alloys in the nanosecond load duration range at normal and elevated temperatures

Baumung, K.; Bluhm, H.; Kanel, G. I.; Müller, Georg; Разоренов, С. В.; Singer, Josef; Уткин, А. В.

doi:10.1016/s0734-743x(01)00004-5

Cited by 44 publications

(23 citation statements)

References 6 publications

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“…To study the dynamic (spall) fracture of materials on the submicrosecond scale of loading, along with the highspeed impact of plates [1], shock waves are currently used that are generated under the action of high-current ion [2][3][4] and electron beams [5][6][7] of power density 10 10 -10 11 W/cm 2 . The generation of a shock wave is associated with fast heating and intense evaporation of the surface layer of the target under the action of the beam.…”

Section: Introductionmentioning

confidence: 99%

Dynamic fracture of copper under the action of a relativistic high-current electron beam

et al. 2006

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This paper presents the results of investigations of the dynamic spall fracture of bulk (2-6 mm) copper targets under the action of a relativistic high-current electron beam (1.3 MeV electron energy, 50 ns pulse duration, ~10 10 W/cm 2 power density) generated by the SINUS-7 accelerator. By numerical simulation with the use of the BETAIN1 software package it has been found that the amplitude of the stress wave formed is 6 GPa and the deformation rate is 5⋅10 5 s -1 . As established experimentally, there is a practically linear relationship between the thickness of the target and the thickness of the spalled layer. Comparison of the experimental data and the simulation results has shown that the spall strength of copper under the given conditions is 1.3 GPa, which is in good agreement with the data available in the literature. Analysis performed with the use of fractographic teqniques has revealed that in the case of recrystallized copper the size of the spall pits formed inside the grains is four times greater than the size of the pits formed on the grain boundaries.

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Section: Introductionmentioning

confidence: 99%

Dynamic fracture of copper under the action of a relativistic high-current electron beam

et al. 2006

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“…Hence, it follows that the contribution of the brittle component to the spall strength will be determined by the purity of the material and structural and phase state of the second phases precipitated on the grain boundaries. An analysis of the published data (for example, see [8,9]) demonstrates that the spall strength of the 110G13 steel is 5-6 GPa.…”

Section: Shock-wave Loading and Rear Spallmentioning

confidence: 99%

“…To form shock waves, nanosecond ion [9] and electron beams with energy density of 10 10 -10 11 W/cm 2 [10,11] are typically used together with high-speed plate impact.…”

Section: Introductionmentioning

confidence: 99%

Deformation behavior and spall fracture of the Hadfield steel under shock-wave loading

et al. 2011

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Comparative studies of regularities in plastic deformation and fracture of the Hadfield polycrystalline steel upon quasi-static tension, impact failure, and shock-wave loading with rear spall are performed. The SINUS-7 accelerator was used as a shock-wave generator. The electron beam parameters of the accelerator were the following: maximum electron energy was 1.35 MeV, pulse duration at half-maximum was 45 ns, maximum energy density on a target was 3.4⋅10 10 W/cm 2 , shock-wave amplitude was ~20 GPa, and strain rate was ~10 6 s -1 . It is established that the failure mechanism changes from ductile transgranular to mixed ductile-brittle intergranular one when going from quasi-static tensile and Charpy impact tests to shock-wave loading. It is demonstrated that a reason for the intergranular spallation is the strain localization near the grain boundaries containing a carbide interlayer.

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“…According to [11][12][13][14][15], the increase in thickness of the irradiated specimen results from variations in amplitude and profile of compression wave evolving near the irradiated surface as it propagates through the specimen. In [15], using copper as an example, it was shown that irradiation by a nanosecond relativistic high-current e-beam, due to fast heating and high-rate evaporation of the surface layers, gives rise to formation of a monopolar compression wave that further propagates to the back surface of the specimen.…”

Section: Spall Fracture Of Coarse-grained and Ultrafine-grained Aluminummentioning

confidence: 99%

“…Within recent time, alongside high-velocity plate collision use is made of shock waves generated by high-current ion and electron beams to investigate spall fracture of metallic materials, due to rapid heating and high-intensity evaporation of the irradiated surface layer [11][12][13][14][15]. The spalling on the backside of the specimen results from the tensile stress momentum upon reflection of the shock wave from the back surface.…”

Section: Introductionmentioning

confidence: 99%

Spall fracture of coarse-grained and ultrafine-grained aluminum under nanosecond relativistic high-current electron beam

et al. 2007

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The results of investigations of fracture behavior in coarse-grained and ultrafine-grained aluminum under the action of a nanosecond relativistic high-current electron beam in a SINUS-7 accelerator and under conditions of quasi-static tensile loading are reported. It is shown that for both types of deformation, irrespective of the grain size, the fracture is ductile both in deformation and structural features. Based on the examination of the fracture surface, it is found out that under quasi-static loading decohesion of coarse-grained and ultrafine-grained aluminum occurs through shear, and under spalling condition by rupture. It is shown for both grain structures that the thickness of the separated layer increases with the irradiated specimen thickness.

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Tensile strength of five metals and alloys in the nanosecond load duration range at normal and elevated temperatures

Cited by 44 publications

References 6 publications

Dynamic fracture of copper under the action of a relativistic high-current electron beam

Dynamic fracture of copper under the action of a relativistic high-current electron beam

Deformation behavior and spall fracture of the Hadfield steel under shock-wave loading

Spall fracture of coarse-grained and ultrafine-grained aluminum under nanosecond relativistic high-current electron beam

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