Non-steady shock waves in metals with phase transitions and hardening by explosion

S. S. Grigorian, K. Y. Kozorezov, R. I. Nigmatulin, N. F. Skugorova, N. N. Kholin

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

A model is proposed for two phase solids which takes into account possible physical and chemical transformations at high pressures when the effects of the strength of the solid are, however, still important. On this basis, one-dimensional non-steady problem of shock wave propagation is considered with application to plane collision between two plates. Significant parameters pertinent to the development of the flow field produced by the collision of iron plates are evaluated. The results of the calculations (for pressures of an order of 105 bar) show a considerable qualitative influence of the phase transition Feα ⇌ Feε{lunate} on the attenuation of the shock wave. The analysis of experimental data on the hardening of iron by collision induced by explosion and the results of calculations show that this process is associated with double recrystalization due to the above mentioned phase transition. On the basis of these results, a theoretical and experimental method of research is proposed for the study of the kinetics of phase transition in solids.

Original languageEnglish
Pages (from-to)405-419
Number of pages15
JournalAstronautica Acta
Volume17
Issue number4-5
Publication statusPublished - Oct 1972
Externally publishedYes

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