C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
148/30
C22F 1/00 (2006.01)
Patent
CA 1039158
ABSTRACT OF THE DISCLOSURE Alloys having a composition suitable for super- plastic deformation ussually require heat treatment after casting and mechanical working in order to produce in the alloy the necessary fineness of grain structure to permit such deformation to occur. It has now been found that some such alloys including in particular ranged of aluminium alloys containing zirconium (or Nb, Ta or Ni) may be heated to a superplastic forming temperature and non-superylastically deformed at that temperature to induce dynamic recrystal- lisation and simultaneously produce a fine recrystallised grain structure and superplastic deformation.
227259
Gardner Kenneth J.
Grimes Roger
Stowell Michael J.
Watts Brian M.
British Aluminium Company Limited (the)
T. I. (group Services) Limited
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