The effect of explosive loading on the microstructure of some metals and alloys

The effects of explosive pulses on the microstructure of Al - 4.5% Cu duralumin, tough pitch copper, pure magnetic iron and 18 chromium 8 nickel stainless steel have been studied using transmission electron microscopy. An explosive loading assembly was designed to investigate the effect of both the...

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Bibliographic Details
Published in:Journal of materials science 1985, Vol.20 (1), p.316-330
Main Authors: AEBERLI, K. E, PRATT, P. L
Format: Article
Language:English
Subjects:
alloys
Applied sciences
Cross-disciplinary physics: materials science
rheology
Energy
Exact sciences and technology
Fuels
Gas industry
loading
Materials science
materials testing
metals
Metals, semimetals and alloys
Phase diagrams and microstructures developed by solidification and solid-solid phase transformations
Physics
shock waves
Specific materials
structural analysis
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Summary:The effects of explosive pulses on the microstructure of Al - 4.5% Cu duralumin, tough pitch copper, pure magnetic iron and 18 chromium 8 nickel stainless steel have been studied using transmission electron microscopy. An explosive loading assembly was designed to investigate the effect of both the flanks and the length of shock pulses on the material microstructure. In copper and duralumin it was found that the microhardness increased with the duration of the rarefaction flank. The size of the shock transformed alpha ' martensite particles in stainless steel also increased with rarefaction time. Three wave interactions could be related to the microstructure of baratol-loaded iron and were attributed to the double shock front caused by the alpha to epsilon phase transformation. Twinning was found to occur when the reflected elastic wave interacted with the first part of the double shock front.
ISSN:0022-2461
1573-4803
DOI:10.1007/bf00555925