C - Chemistry – Metallurgy – 22 – F
Patent
C - Chemistry, Metallurgy
22
F
148/55.1, 148/3.
C22F 1/10 (2006.01) C30B 33/00 (2006.01)
Patent
CA 1237964
Heat Treatment of Single Crystals Abstract Concepts relating to the heat treatment of single crystal superalloy articles are disclosed. A first concept is the use of a heat treatment sequence which includes incipient melting of the article being heat treated followed my one or more steps which essentially heal the incipient melting damage. A second concept relates to the treatment of previously heat treated single crystal articles which have incipient melting. Methods are disclosed for healing this damage and for recovering the mechanical properties of such articles. A third concept disclosed is a particular cycle which per- mits effective heat treatment of a specific single crystal alloy composition.
455855
Chen Otis Y.
Field Thomas T.
Geary Arthur R.
Salkeld Richard W.
Ulion Nicholas E.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
United Technologies Corporation
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