Home > Search Results: 999C1a:IAA2041002
Search:
Search Tips :: Advanced Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 2 records found  Search took 0.02 seconds. 
Fatigue crack initiation in fcc crystals
 Lukáš, Petr ; Kunz, Ludvík
Initiation of fatigue cracks both in model fcc single crystals and in fcc single crystals used in engineering practice is discussed. The emphasis is placed on the role of different types of cyclic slip localisation. It is shown that the phenomenon of persistent slip bands (PSBs) is confined to single crystals of sufficiently high stacking fault energy cycled at a relatively narrow range of loading conditions. For single crystals of not suitable orientations and/or of low stacking fault energy cycled under stresses and/or strains outside the critical range and/or under high temperatures the cyclic plasticity manifests itself by other forms of slip activity leading to the formation of surface hill-valley topography.
Detailed record
Factors determining lifetime of single crystalline gas turbine blades
 Lukáš, Petr ; Kunz, Ludvík ; Obrtlík, Karel ; Čadek, Josef
Creep, low-cycle fatigue and creep/fatigue tests were performed on Nickel base superalloy CMSX-4 at high temperatures. It has been shown that the crystal orientation has a strong influence on creep and low-cycle fatigue resitance. Results of creep/fatigue experiments show that small vibrations exhibit a beneficial effect on creep rate.
Detailed record

Interested in being notified about new results for this query?
Subscribe to the RSS feed.
Digital Repository :: Search :: Submit :: Personalize :: Help
Powered by Invenio v1.1.2
Maintained by admin.invenio@techlib.cz
This site is also available in the following languages:
Česky  English