ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Nickel base superalloys are the primary class of materials used in the manufacture of hightemperature components for gas turbine aeroengines, including combustion casings and liners, guidevane and turbine blades and discs, etc. These components are subjected to complex cyclic loadinginduced by the combination of mechanical loading, changing temperatures and thermal gradients,inducing plastic deformation and creep, that ultimately may lead to crack initiation and propagation.The purpose of the present paper is to provide a necessarily brief overview of recent modelingactivities in this field, including polycrystalline crystal plasticity modeling for the study of crackinitiation, coupled non-local damage-plasticity modeling for crack initiation and propagationstudies, and the incorporation of time and environment dependent processes (creep and oxidation) inthe predictive modeling of fatigue crack growth rates in nickel base superalloys
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/54/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.348-349.53.pdf
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