Method for Controlling the Energy Damping of a Shape Memory Alloy With Surface Roughness

摘要

In a method for controlling energy damping in a shape memory alloy, provided is a shape memory alloy having a composition including at least one of: Cu in at least about 10 wt. %, Fe in at least about 5 wt. %, Au in at least about 5 wt. %, Ag in at least about 5 wt. %, Al in at least about 5 wt. %, In in at least about 5 wt. %, Mn in at least about 5 wt. %, Zn in at least about 5 wt. % and Co in at least about 5 wt. %. The shape memory alloy is configured into a structure including a structural feature having a surface roughness and having a feature extent that is greater than about 1 micron and less than about 1 millimeter. Energy damping of the structural feature is modified by exposing the structural feature to process conditions that alter the surface roughness of the structural feature.

主权项

1. A method for controlling energy damping in a shape memory alloy comprising:
providing a shape memory alloy having a composition that includes at least one member selected from the group consisting of Cu in at least about 10 wt. %, Fe in at least about 5 wt. %, Au in at least about 5 wt. %, Ag in at least about 5 wt. %, Al in at least about 5 wt. %, In in at least about 5 wt. %, Mn in at least about 5 wt. %, Zn in at least about 5 wt. % and Co in at least about 5 wt. %; configuring the shape memory alloy into a structure that includes a structural feature having a feature extent that is greater than about 1 micron and less than about 1 millimeter, the shape memory alloy structural feature having a surface roughness; and modifying the energy damping of the shape memory alloy structural feature by exposing the shape memory alloy structural feature to process conditions that alter the surface roughness of the shape memory alloy structural feature.