Accession Number : ADA141193

Title :   Experimental and Theoretical Studies of Creep Crack Growth.

Descriptive Note : Final rept.,

Corporate Author : MASSACHUSETTS INST OF TECH CAMBRIDGE

Personal Author(s) : Pelloux,R M ; Bain,K R ; Bensussan,P

PDF Url : ADA141193

Report Date : 20 Mar 1984

Pagination or Media Count : 146

Abstract : A two part research program was conducted to study the mechanics of creep crack growth in (1) nickel base superalloys as a function of alloy chemistry and test environment at 704 deg C; (2) a high strength aluminum alloy 2219-T851 at 175 deg C. The creep crack growth rate data is reported and analyzed in terms of fracture mechanics parameters. The automated test procedures used for the aluminum alloys are discussed in detail. An iterative model based on creep damage accumulation was derived to predict the creep crack growth rates.

Descriptors :   *Superalloys, *High strength alloys, *Aluminum alloys, *Nickel alloys, *Creep, *Crack propagation, Mathematical prediction, Fractography, Microstructure, Mechanical properties, Heat treatment, Fracture(Mechanics), Stresses, Computations, Geometry, Factor analysis, Test methods, Experimental data

Subject Categories : Properties of Metals and Alloys
      Statistics and Probability
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE