Home > Search Results: 517.20
Search:
 
Search Tips :: Simple Search
Search collections:
Sort by: Display results: Output format:
National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Micromechanical aspects of transgranular and intergranular failure competition
 Dlouhý, Ivo ; Němec, Ondřej
Main purpose of the work was to quantify causes and characteristics governing the intergranular fracture initiation and occurrence of this fracture micromechanism in competition with cleavage one. A CrNi steel of commercial quality and the same steel with increased content of impurity elements have been used for investigation. Step cooling treatment has been applied in order to induce intergranular embrittlement and brittle fracture initiation in both steel melts. Except for standard specimen geometry for three-point bending the pre-cracked Charpy type specimens were applied for determination of fracture mechanical properties. Fractal analysis was applied in order to characterise the quantitative morphological differences in fracture surfaces. Relation of cleavage fracture stress and critical stress for intergranular failure has been followed.
Detailed record
Operational degradation and competition of cleavage and intergranular failure
 Němec, Ondřej ; Dlouhý, Ivo
In present contribution, cumulative effect of metallurgic impurities and simulated operational degradation is analysed both resulting in intergranular embrittlement and fracture. For criteria formulation of critical and/or acceptable metallurgic impurities content the competition of two stress controlled fracture mechanisms is developed. When quantifying the impurities effect the characteristics of fracture surface morphology (fractal dimension) and critical fracture stress have been applied.
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