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Strain-rate effects for high-strain-rate computations

Journal de Physique IV (Proceedings), 2006
This paper examines the effect of strain rates for computations involving high strain-rates, beyond 10 3 s -1 . Although it is generally agreed that there is an enhanced rate effect at these higher rates, there is uncertainty regarding the interpretation of dynamic test data, the form of the high-rate effect, and the effect of the high rates on ...
G. R. Johnson   +3 more
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Nanotwinning-assisted dynamic recrystallization at high strains and strain rates

Nature Materials, 2022
Grain refinement is a widely sought-after feature of many metal production processes and frequently involves a process of recrystallization. Some processing methods use very high strain rates and high strains to refine the grain structure into the nanocrystalline regime.
Ahmed A. Tiamiyu   +5 more
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High-strain, high-strain-rate behavior of tantalum

Metallurgical and Materials Transactions A, 1995
Tantalum plate produced by a forging-rolling sequence was subjected to high plastic shear strains(γ = 1 → 5.5) at high strain rates (∼4 × 104 s-1) in two experimental configurations: (a) a special hat-shaped geometry and (b) thin disks deformed in a split Hopkinson bar.
M. A. Meyers   +3 more
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A high-strain-rate superplastic ceramic

Nature, 2001
High-strain-rate superplasticity describes the ability of a material to sustain large plastic deformation in tension at high strain rates of the order of 10-2 to 10-1 s-1 and is of great technological interest for the shape-forming of engineering materials. High-strain-rate superplasticity has been observed in aluminium-based and magnesium-based alloys.
B N, Kim, K, Hiraga, K, Morita, Y, Sakka
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