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Abstract

Stress-strain curves up to very high strain rates (3 x 1.0 E4/s), determined by shear testing of AISI 316 and ARMCO iron, showed large strain at fracture and saturation of flow stress (no strain hardening) at large strains. The flow curves in tension showed strain hardening up to fracture. The different macroscopic responses in tension and shear are caused by differences in the corresponding microscopic deformation mechanisms. The flow curves in tension and the equivalent flow curves in shear were not coincident because the classical plasticity model assumes the same microscopic deformation mechanism at each deformation mode.

Additional information

Authors: ALBERTINI C, JRC Ispra (IT);MONTAGNANI M, JRC Ispra (IT);PIZZINATO E V, JRC Ispra (IT);RODIS A, JRC Ispra (IT)
Bibliographic Reference: Paper presented: 6th International Conference on Mechanical Behaviour of Materials, Kyoto (JP), July 29 - Aug. 2, 1991
Availability: Available from (1) as Paper EN 36043 ORA
Record Number: 199110700 / Last updated on: 1994-12-02
Category: PUBLICATION
Original language: en
Available languages: en
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