Patent · US Expired

Heat treatments of controlled expansion alloy

US4685978A · kind A · utility

6Cited by
13References
6Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 17, 1983
Grant dateAug 11, 1987
Priority date—
Expiry dateNov 17, 2003

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC21D6/001
  • WIPO fieldMaterials, metallurgy
  • WIPO sectorChemistry

Abstract

Controlled low expansion alloys containing nickel, titanium, columbium, silicon, etc., and optionally cobalt can be heat treated using relatively short periods of time. Aging treatments can be less than eight hours, for example, four hours.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.