The Effect of an Impressed Electric Field on the Metal Working of Aircraft Structural Materials
Abstract
That an interaction exists between conduction electrons in metals and moving dislocations has long been known. Provided a large amount of electrical energy is passed through a metal undergoing plastic deformation either a load drop or increased plasticity is observed. This work confirms that this so called electroplastic effect is strain rate dependent; it becomes negligible at higher strain rates. Thus, it seems unlikely that electroplasticity can be useful in high strain rate metal working operations. However, it might be useful in forming small parts at low strain rates and the required currents do not become excessive. Tensile tests on polycrystalline and single crystal show load drops which become smaller as the strain rate increases. (jes)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1979
- Accession Number
- ADA214856
Entities
People
- L. R. Cornwell
Organizations
- Texas Engineering Experiment Station