Contrasting the Microstructural and Mechanical Response to Shock Loading of Cold-Rolled Copper with Annealed Copper

The response of copper to shock loading and cold working is well documented. Both shock loaded and cold-worked annealed copper display a high dislocation density and increased yield strength. However, as of yet no work has been carried out on the microstructure of shock-loaded cold-worked copper. Bo...

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Bibliographic Details
Published in:Metallurgical and materials transactions. A, Physical metallurgy and materials science Physical metallurgy and materials science, 2015-10, Vol.46 (10), p.4518-4521
Main Authors: Higgins, Daniel L., Pang, Bo, Millett, Jeremy C. F., Whiteman, Glenn, Jones, Ian P., Chiu, Yu-Lung
Format: Article
Language:English
Subjects:
Annealing
ANNEALING PROCESSES
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cold rolling
COLLAPSE
Copper
DENSITY
Dislocation density
Hardness
Materials Science
Metallic Materials
Microstructure
MICROSTRUCTURES
Nanotechnology
Peak pressure
Polycrystals
PRESSURE
ROLLING
Shock loading
Structural Materials
Surfaces and Interfaces
Symposium: Dynamic Behavior of Materials VI
Thin Films
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Summary:The response of copper to shock loading and cold working is well documented. Both shock loaded and cold-worked annealed copper display a high dislocation density and increased yield strength. However, as of yet no work has been carried out on the microstructure of shock-loaded cold-worked copper. Both annealed and cold-worked copper have been tested using a gas gun to ascertain the effect of shock loading on cold-worked copper. The annealed copper was loaded to a peak pressure of 5 GPa and the cold-worked copper was loaded to peak pressures of 6 and 10 GPa. It was found that the shock-loaded cold-worked copper had a higher hardness than the shock-loaded annealed copper and that the hardness of the cold-worked copper increased with peak shock pressure. Each specimen analyzed displayed different variations on the classic shocked copper microstructure, which was ascribed to the different momentum trapping apparatus used.
ISSN:1073-5623
1543-1940
DOI:10.1007/s11661-014-2398-7