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A. V. Dobromyslov, E. A. Kozlov, N. I. Taluts

DEFORMATION STRUCTURE OF HIGH-PURITY IRON AFTER EXPLOSIVE LOADING IN SPHERICAL SYSTEMS

DOI: 10.17804/2410-9908.2016.6.069-079

The deformation structure of high-purity iron after loading by spherically converging shock waves is studied by optical metallography, transmission electron microscopy, and microhardness measurements. It is revealed that high-rate plastic deformation of iron proceeds by slip. Shear bands and bands of strain localization along grain boundaries are formed in the course of loading. A mixed structure consisting of dislocation cells and bands is observed at the microlevel. Under realized loading conditions, high-rate plastic deformation of iron proceeds in the ε-phase; therefore twins are not formed. The deformation structure of high-purity iron is compared with the structure of Armco iron formed after similar loading conditions. The found difference is explained by different mobility of dislocations.

Keywords: iron, shock waves, high-rate plastic deformation, structure

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Article reference

Dobromyslov A. V., Kozlov E. A., Taluts N. I. Deformation Structure of High-Purity Iron after Explosive Loading in Spherical Systems [Electronic resource] // Diagnostics, Resource and Mechanics of materials and structures. - 2016. - Iss. 6. - P. 69-79. -
DOI: 10.17804/2410-9908.2016.6.069-079. -
URL: http://eng.dream-journal.org/issues/2016-6/2016-6_110.html
(accessed: 12/07/2022).  

 

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