Accession Number:

ADA247543

Title:

Fatigue in Single Crystal Nickel Superalloys

Descriptive Note:

Technical progress rept. 16 Jan-15 Feb 1992

Corporate Author:

PRATT AND WHITNEY WEST PALM BEACH FL

Personal Author(s):

• DeLuca, Daniel P.
• Annis, Charles

Report Date:

1991-02-15

Pagination or Media Count:

9.0

Abstract:

This program investigates the seemingly unusual behavior of single crystal airfoil materials. The fatigue initiation processes in single crystal SC materials are significantly more complicated and involved than fatigue initiation and subsequent behavior of a single macrocrack in conventional, isotropic, materials. To understand these differences is the major goal of this project. Fatigue, Fracture, Single Crystal, PWA 1480, PWA 1484.

Descriptors:

• *SINGLE CRYSTALS
• *AIRFOILS
• *NICKEL
• *SUPERALLOYS
• *FATIGUE
• MATERIALS
• CRYSTALLOGRAPHY
• ANISOTROPY
• BEHAVIOR
• CRYSTALS

Subject Categories:

• Inorganic Chemistry
• Metallurgy and Metallography
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE