VARIATION OF PROPERTIES OF FINE WIRES WITH DIAMETER.
Abstract
The growth of face-centered-cubic wire single crystals utilizing the strain anneal technique was investigated, and the values of the various parameters in the process determined. With the exception of aluminum, annealing twins were produced in all the metals examined during the gradient anneal, and acted as obstacles to migrating grain boundaries. Copper crystals .020 in. diameter grown by the above technique were shown to have a preferred orientation, i.e. with their major axis parallel to (100) . This is the cube texture commonly developed in cold worked and annealed copper. Electro and chemical thinning experiments on single crystals of copper grown from both the liquid and the solid have met with some success and are continuing. Etch pit studies revealed pits on (111) faces of copper crystals grown by a modified Bridgman technique. Finally, a 'hard' tensile apparatus is at present being modified to enable the observation of such phenomena as the yield point and the early stages of the stress-strain behavior in addition to fracture properties of the fine wires. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1963
- Accession Number
- AD0602532
Entities
People
- E. Hughes
- G. Abowitz
- P. Barton
- R. Vigue