Tensile Strength, Elongation and Flow Stress of Aluminum-Magnesium Alloys under Dynamic Loading

Sakui, Seita; Mori, T.; Kakuma, Tsutomu

doi:10.2320/jinstmet1952.28.8_439

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1966

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“…An experimental study of the dynamic behaviours of materials by this method was first introduced by Kolsky(1), who employed thin wafer-shaped specimens of copper and lead. Later a number of similar experiments have been done by Krafft for example, by Campbell and Harding(6) using a modified Hopkinson bar apparatus and by Sakui et al (7), a drop hammer-type impact machine.…”

Section: Introductionmentioning

confidence: 99%

Deformation of Polycrystalline Aluminium at High Strain Rates

Yoshida

Nagata

1966

Trans. JIM

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In order to investigate the dynamic deformation behaviour of annealed polycrystalline aluminium at room temperature, apparatus.In this experiment, a cylindrical specimen was inserted between two elastic bars and compressed rapidly by transmitting a stress pulse generated by the impact of a bar.The dynamic stress-strain curve is parabolic in a way similar to the static curve. The dynamic flow stress is always higher than the static one showing strain rate dependence.From the results obtained at higher strain rates the stress-strainstrain rate relationship is summarized by an equationIt is concluded from the results that the flow stress depends not only on the instantaneous strain and strain rate but also on the strain rate history of the specimen.

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Section: Introductionmentioning

confidence: 99%