Structures, Insulators and Conductors for Large Superconducting Magnets

• Published in: Journal of nuclear materials Vol. 85-86; no. A; pp. 353 - 360
• Main Authors: Fickett, F R, Reed, R P, Dalder, E N C
• Format: Journal Article
• Language: English
• Published: 01.12.1979
• ISSN: 0022-3115

As the size of superconducting magnet systems increases, the structural aspects become of increasing importance. Because the stresses increase with size and field, magnets of the type proposed for new devices will be largely structure. A program to acquire low-temp. mechanical and physical property data on a wide range of materials is described. Emphasis is placed the austenitic stainless steels as the primary structural material, although data have also been acquired on a few Al alloys. Particular stress has been placed on the fracture characteristics of both the base metal and weldments where appropriate. Achieving a good match between weld and base metal at 4 deg K is proving to be a difficult task. Several industrial laminates of fixed composition have been produced as a result of this program. These materials, G10 CR, G11 CR and G11 CR(BF) have been 4 deg K and the results are presented. Recent measurements on the effect of stress and fatigue on matrix materials for superconductor stabilizaation are also briefly reviewed. A new handbook of data on the properties of structural materials for superconducting magnet systems is described.7 refs.--AA