Development of crystallographic texture during high rate deformation of rolled and hot-pressed beryllium

Brown, Donald W.; Abeln, S.P.; Blumenthal, W.R.; Bourke, M.A.M.; Mataya, M. C.; Tomé, Carlos N.

doi:10.1007/s11661-005-0287-9

Cited by 41 publications

(22 citation statements)

References 27 publications

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“…Thus, there was a higher contribution from the basal slip system to deformation in all four samples at the higher strain rate. The contribution of basal slip to room temperature deformation of low c/a metals like zirconium and titanium is considered minimal [2], with beryllium as an exception [33]. However, it has been reported that in spite of the fact that the CRSS for basal slip is higher than that for prismatic slip in titanium, basal slip can be activated [10, [34][35][36][37].…”

Section: Deformation Mode Activitymentioning

confidence: 99%

Deformation behaviour of commercially pure titanium at extreme strain rates

2011

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Section: Deformation Mode Activitymentioning

confidence: 99%

Deformation behaviour of commercially pure titanium at extreme strain rates

2011

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“…[27,28,69] The response of Ti 3 SiC 2 at room temperature is fully reversible until failure, i.e., there is no plastic deformation. Plastic deformation is only observed at temperatures higher than the brittle-toplastic transition, at which point the fracture toughness drops, but the strain to failure, due to cavitation and microcracking, is greatly enhanced.…”

Section: Damping and The Case Against Reversible Twinningmentioning

confidence: 99%

Kinking Nonlinear Elasticity and the Deformation of Magnesium

Zhou

Barsoum

2009

Metall Mater Trans A

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Despite a large body of work devoted to understanding the deformation of polycrystalline magnesium, there are still some outstanding questions, not the least of which are the nature of its microyielding and the nature of its fully reversible, hysteretic, stress-strain curves. In this article, we provide further evidence that Mg is a kinking nonlinear solid by showing excellent agreement between the predictions of our microscale model, in which fully reversible, dislocation-based incipient kink bands (IKBs) are the key microscale element, the experimental results obtained in our study, and, just as important, the results obtained by others. It follows that microyielding and the fully reversible hysteresis loops are most likely to be due to IKB formation, with the propensity for kinking being enhanced for coarse-grained samples up to a grain size of %50 lm, after which further increases in grain size have little effect. From the areas of the reversible loops, the critical resolved shear stresses (CRSSs) associated with the movement of basal plane dislocations are obtained and are shown to scale with the maximum flow stresses at which the loops are obtained. We also make the case that, at least for low strains, strains along the c-axis can be accommodated by invoking the formation of IKBs, mobile dislocation walls, and kink boundaries and should be included in future modeling of the deformation of polycrystalline Mg.

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“…Of those tests that have been conducted to high strain rates most use either an unusual sample dimension [2], or a novel testing method which utilises a strain path that is not common in an industrial process, i.e., the split-Hopkinson pressure bar (SHPB) [5][6][7][8][9]. With these techniques it is possible to produce strain rates as high as 7000 s −1 [5,6].…”

Section: Introductionmentioning

confidence: 99%