Patent ID: 6733235
Filing Date: 2004-05-11
Classification: F01D,Y10T

Abstract:
A turbine engine shroud segment comprising a shroud segment body including a radially inner surface arcuate at least circumferentially, a radially outer surface, a first plurality of spaced apart axial edge surfaces connected with and between each of the inner and outer surfaces, and a second plurality of spaced apart circumferential edge surfaces connected with and between each of the inner and outer surfaces, wherein:the shroud segment includes a single shroud segment projection, for carrying the shroud segment body, integral with and projecting generally radially outwardly from the shroud segment body radially outer surface; the projection being positioned on the shroud segment body radially outer surface at a generally midway surface portion spaced apart from the first plurality of axial edge surfaces and extending generally between the second plurality of circumferential edge surfaces; the projection comprising a projection head spaced apart from the shroud body radially outer surface, and a projection transition portion having a transition surface, the projection transition portion being integral with both the projection head and the shroud body radially outer surface, the transition portion being smaller in cross section than the projection head in at least one of the axial and circumferential directions; the shroud segment being made of a low ductility material having a low tensile ductility, measured at room temperature to be no greater than about 1%; and, the projection transition portion being arcuate.