Title: Fabrication and mechanical properties of sub-micron nanocrystalline rhenium–nickel alloy pillars
Abstract: Sub-micron scale nanocrystalline rhenium–nickel super-alloy pillars with solid core and hollow cross-sectional geometries were successfully fabricated by using electron beam lithography and electroplating techniques. Specimens with two different nickel compositions were characterized—1.3 and 20.6 at%. Uniaxial compression results reveal strong nanocrystalline structures with average flow stresses greater than 3 GPa. However, the strengths and work hardening capacity of these specimens appears to depend on their cross-sectional geometries. Pillars with solid core geometry exhibit almost perfectly plastic deformation while the hollow shaped specimens show strain hardening behaviors. In addition, the hollow shaped pillars appear to be stronger than their solid core counterparts.
Publication Year: 2015
Publication Date: 2015-03-02
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 1
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