| 摘要 |
<p>A clad wire rod suitable for material of an ornament such as an eyeglass frame fabricated through being cold-worked with high degree of working, which is obtained through a step of producing a clad material by fitting a core of a shape memory alloy in an intermediate layer of Ta, Nb or their alloys, further fitting them in a metallic outside layer, and after fastening a lid of the same material of the outside layer thereto to keep the inside a high vacuum, and a step of heating, hot extrusion, repeated cold drawing and softening the thus-obtained clad material.</p> |
