Please use this identifier to cite or link to this item:
doi:10.22028/D291-32180
Title: | Assessing the intergranular crack initiation probability of a grain boundary distribution by an experimental misalignment study of adjacent slip systems |
Author(s): | Schäfer, Florian Lang, Eric P. W. Bick, Michael Knorr, Alain Franz Marx, Michael Motz, Christian |
Language: | English |
Title: | Procedia Structural Integrity |
Pages: | 547-554 |
Publisher/Platform: | Elsevier |
Year of Publication: | 2017 |
Title of the Conference: | 2nd International Conference on Structural Integrity, ICSI 2017, 4-7 September 2017 |
Place of the conference: | Funchal, Madeira, Portugal |
Free key words: | grain boundary resistance slips system alignment 3D microstructure boundary crack initiation PSBs |
DDC notations: | 500 Science 530 Physics 540 Chemistry 600 Technology 620 Engineering and machine engineering 621.3 Electrical engineering, electronics 660 Chemical engineering |
Publikation type: | Conference Paper |
Abstract: | Crack initiation at grain boundaries due to blocked slip transfer of dislocations is a main failure mechanism during the fatigue of metals. A quantification of the resistance effect of a grain boundary is needed to assess a textured or texture-free microstructure for fatigue strength. Geometric approaches based on the misalignment of slip systems in adjacent grains are widely used. Hence, we validated the geometric transmission factor of Shen et al. in coarse-grained high-purity aluminum under the assumption that the combination of a large slip activity and a blocked slip at a grain boundary leads to intergranular crack initiation and revealed that a detailed knowledge of the 3D-orientation of the grain boundary is essential. Thereby we gathered information about the 3D-microstructure using FIB-cross-sectioning. Hence it is possible to evaluate potential crack initiation sites for a specific microstructure or to estimate the fatigue strength of a textured microstructure in terms of a crack initiation probability. |
DOI of the first publication: | 10.1016/j.prostr.2017.07.161 |
Link to this record: | urn:nbn:de:bsz:291--ds-321809 hdl:20.500.11880/29680 http://dx.doi.org/10.22028/D291-32180 |
Date of registration: | 15-Sep-2020 |
Notes: | Procedia Structural Integrity, 5 (2017), S. 547-554 |
Faculty: | NT - Naturwissenschaftlich- Technische Fakultät |
Department: | NT - Materialwissenschaft und Werkstofftechnik |
Professorship: | NT - Prof. Dr. Christian Motz |
Collections: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
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1-s2.0-S2452321617302731-main.pdf | Assessing the intergranular crack initiation probability of a grain boundary distribution by an experimental misalignment study of adjacent slip systems | 1,04 MB | Adobe PDF | View/Open |
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