Artifactless superelastic alloy
AssigneesTokyo Institute of Technology, Tanaka Kikinzoku Kogyo K.K.
InventorsHideki Hosoda, Akira Umise, Kenji Goto
Life of this patent
Estimating the term…
Abstract
The present invention provides an artifactless superelastic alloy including a Au—Cu—Al alloy, the superelastic alloy containing Cu in an amount of 20 atom % or more and 40 atom % or less, Al in an amount of 15 atom % or more and 25 atom % or less, and Au as a balance, the superelastic alloy having a bulk magnetic susceptibility of −24 ppm or more and 6 ppm or less. The Ni-free superelastic alloy of the present invention is capable of exhibiting superelasticity in a normal temperature range, and hardly generated artifacts in a magnetic field environment. The alloy can be produced by setting a casting time in a melting and casting step to a fixed time, and hot-pressing an alloy after casting to make material structures homogeneous.
Claims6
An artifactless superelastic alloy comprising a Au—Cu—Al alloy,
- the superelastic alloy containing Cu in an amount of 20 atom % or more and 40 atom % or less, Al in an amount of 15 atom % or more and 25 atom % or less, and Au as a balance,
- the superelastic alloy having a bulk magnetic susceptibility of −24 ppm or more and 6 ppm or less.
Dependencies are inferred from the claim text.