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

Research output: Contribution to journalArticlepeer-review

Authors

  • Daniel L. Higgins
  • Bo Pang
  • Jeremy C F Millett
  • Glenn Whiteman

Colleges, School and Institutes

Abstract

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.

Details

Original languageEnglish
Pages (from-to)4518-4521
Number of pages4
JournalMetallurgical and Materials Transactions A
Volume46
Issue number10
Early online date17 Jun 2014
Publication statusPublished - Oct 2015

Keywords

  • Electrical Discharge Machine, High Dislocation Density, Shock Loading, Annealed Copper, Dislocation Cell Structure