Orientation and thickness dependence of stress-strain curves in vacuum deposited single crystal silver films
✍ Scribed by M. Fukamachi; S. Nagakura; S. Oketani
- Publisher
- Elsevier Science
- Year
- 1966
- Weight
- 395 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0001-6160
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✦ Synopsis
Orientation and thickness dependence of stress-strain
curves in vacuum deposited single crystal silver films* Mechanical properties of thin f.c.c. metal films formed by vacuum deposition have been studied by several authors.~~-?j Thev reported that the stress-" strain curves of the deposited films are very steep upto high stress and that the tensile strength is larger than that of annealed bulk metals. Thickness dependence of mechanical properties was found by the studies using the bulge method (1x5) but not found by the studies using the tensile method. (8'4) Orientation dependence of work-havening behavior of the deposited single crystal films has not been found.@*7j The present authors have studied the mechanical properties of vacuum deposited single crystal silver films and found strong orientation and thiokness dependence in the stress-strain curves. Results are described briefly in this communication.
Single crystal silver films were prepared by vacuum deposition on cleavage surfaces of rock salt crystals kept at 230°C. The film surface is (001). Any surface film was not detected in eleatron diffraction xcfleotion patterns. Stress-strain curves were taken by a tensile testing device which was designed for this purpose. It gives load-elongation curves with minimum load in-