Abstract
Comparative studies of regularities in plastic deformation and fracture of the Hadfield polycrystalline steel upon quasi-static tension, impact failure, and shock-wave loading with rear spall are performed. The SINUS-7 accelerator was used as a shock-wave generator. The electron beam parameters of the accelerator were the following: maximum electron energy was 1. 35 MeV, pulse duration at half-maximum was 45 ns, maximum energy density on a target was 3. 4·1010 W/cm2, shock-wave amplitude was ~20 GPa, and strain rate was ~106 s-1. It is established that the failure mechanism changes from ductile transgranular to mixed ductile-brittle intergranular one when going from quasi-static tensile and Charpy impact tests to shock-wave loading. It is demonstrated that a reason for the intergranular spallation is the strain localization near the grain boundaries containing a carbide interlayer.
Original language | English |
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Pages (from-to) | 1046-1052 |
Number of pages | 7 |
Journal | Russian Physics Journal |
Volume | 53 |
Issue number | 10 |
DOIs | |
Publication status | Published - Mar 2011 |
Keywords
- Hadfield steel
- High-current electron beam
- Spall fracture
ASJC Scopus subject areas
- Physics and Astronomy(all)