The Control of Grain Shape and Its Effect on the Properties of Cast Components for High-Temperature and High-Stress Applications Pratt and Whitney Aircraft, Div., United Aircraft Corporation

Format:

Conference/Event

Author/Creator:

Piearcey, B. J., author.

Conference Name:

1966 Automotive Engineering Congress and Exposition (1966-01-10 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1966

Summary:

A precision casting technique based on directional solidification, which imparts ductility and thermal shock resistance to high-temperature, creep-resistant, nickel-base superalloys has been developed at Pratt and Whitney Aircraft. The desired improvement in physical properties is achieved by controlling the grain solidification process so as to eliminate transverse grain boundaries. Furthermore, the feasibility of producing parts using this "directional solidification process" has been demonstrated in both experimental and production foundry facilities.To establish the worth of this new casting process, identically-shaped parts were fabricated from the same nickel-base superalloy, Mar M-200, following either the "controlled conventional process" or the "directional solidification process." The parts were then subjected to identical laboratory physical tests and accelerated endurance tests in Pratt and Whitney Aircraft experimental engines. The results obtained from these tests are described

Notes:

Vendor supplied data

Publisher Number:

660055

Access Restriction:

Restricted for use by site license