Accession Number : ADA254603


Title :   Fatigue in Single Crystal Nickel Superalloys


Descriptive Note : Technical progress rept. 16 Sep 1991-15 Aug 1992,


Corporate Author : PRATT AND WHITNEY WEST PALM BEACH FL GOVERNMENT ENGINES AND SPACE PROPULSION


Personal Author(s) : DeLuca, Daniel P ; Annis, Charles


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a254603.pdf


Report Date : 15 Aug 1992


Pagination or Media Count : 10


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.


Descriptors :   *SINGLE CRYSTALS , *AIRFOILS , *FRACTURE(MECHANICS) , *FATIGUE , *NICKEL , *SUPERALLOYS , MATERIALS , BEHAVIOR , MARKOV PROCESSES , CRYSTALS


Subject Categories : Aircraft
      Properties of Metals and Alloys
      Crystallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE