About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites
The influence of gradients in hardness and elastic properties at interfaces of dissimilar materials in laminated metallic composites (LMCs) on fatigue crack propagation is investigated experimentally for three different LMC systems: Al/Al-LMCs with dissimilar yield stress and Al/Steel-LMCs as well a...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-05-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/10/2564 |
| _version_ | 1797534050506768384 |
|---|---|
| author | Philip Manuel Pohl Frank Kümmel Christopher Schunk Itziar Serrano-Munoz Henning Markötter Mathias Göken Heinz Werner Höppel |
| author_facet | Philip Manuel Pohl Frank Kümmel Christopher Schunk Itziar Serrano-Munoz Henning Markötter Mathias Göken Heinz Werner Höppel |
| author_sort | Philip Manuel Pohl |
| collection | DOAJ |
| description | The influence of gradients in hardness and elastic properties at interfaces of dissimilar materials in laminated metallic composites (LMCs) on fatigue crack propagation is investigated experimentally for three different LMC systems: Al/Al-LMCs with dissimilar yield stress and Al/Steel-LMCs as well as Al/Ti/Steel-LMCs with dissimilar yield stress and Young’s modulus, respectively. The damage tolerant fatigue behavior in Al/Al-LMCs with an alternating layer structure is enhanced significantly compared to constituent monolithic materials. The prevalent toughening mechanisms at the interfaces are identified by microscopical methods and synchrotron X-ray computed tomography. For the soft/hard transition, crack deflection mechanisms at the vicinity of the interface are observed, whereas crack bifurcation mechanisms can be seen for the hard/soft transition. The crack propagation in Al/Steel-LMCs was studied conducting in-situ scanning electron microscope (SEM) experiments in the respective low cycle fatigue (LCF) and high cycle fatigue (HCF) regimes of the laminate. The enhanced resistance against crack propagation in the LCF regime is attributed to the prevalent stress redistribution, crack deflection, and crack bridging mechanisms. The fatigue properties of different Al/Ti/Steel-LMC systems show the potential of LMCs in terms of an appropriate selection of constituents in combination with an optimized architecture. The results are also discussed under the aspect of tailored lightweight applications subjected to cyclic loading. |
| first_indexed | 2024-03-10T11:24:08Z |
| format | Article |
| id | doaj.art-9e03ce0bf5934dc29425098d1fcf7107 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T11:24:08Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-9e03ce0bf5934dc29425098d1fcf71072023-11-21T19:50:23ZengMDPI AGMaterials1996-19442021-05-011410256410.3390/ma14102564About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic CompositesPhilip Manuel Pohl0Frank Kümmel1Christopher Schunk2Itziar Serrano-Munoz3Henning Markötter4Mathias Göken5Heinz Werner Höppel6Materials Science & Engineering, Institute I, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstr. 5, 91058 Erlangen, GermanyMaterials Science & Engineering, Institute I, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstr. 5, 91058 Erlangen, GermanyMaterials Science & Engineering, Institute I, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstr. 5, 91058 Erlangen, GermanyBundesanstalt für Materialforschung und-prüfung (BAM), Unter den Eichen 87, 12205 Berlin, GermanyBundesanstalt für Materialforschung und-prüfung (BAM), Unter den Eichen 87, 12205 Berlin, GermanyMaterials Science & Engineering, Institute I, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstr. 5, 91058 Erlangen, GermanyMaterials Science & Engineering, Institute I, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Martensstr. 5, 91058 Erlangen, GermanyThe influence of gradients in hardness and elastic properties at interfaces of dissimilar materials in laminated metallic composites (LMCs) on fatigue crack propagation is investigated experimentally for three different LMC systems: Al/Al-LMCs with dissimilar yield stress and Al/Steel-LMCs as well as Al/Ti/Steel-LMCs with dissimilar yield stress and Young’s modulus, respectively. The damage tolerant fatigue behavior in Al/Al-LMCs with an alternating layer structure is enhanced significantly compared to constituent monolithic materials. The prevalent toughening mechanisms at the interfaces are identified by microscopical methods and synchrotron X-ray computed tomography. For the soft/hard transition, crack deflection mechanisms at the vicinity of the interface are observed, whereas crack bifurcation mechanisms can be seen for the hard/soft transition. The crack propagation in Al/Steel-LMCs was studied conducting in-situ scanning electron microscope (SEM) experiments in the respective low cycle fatigue (LCF) and high cycle fatigue (HCF) regimes of the laminate. The enhanced resistance against crack propagation in the LCF regime is attributed to the prevalent stress redistribution, crack deflection, and crack bridging mechanisms. The fatigue properties of different Al/Ti/Steel-LMC systems show the potential of LMCs in terms of an appropriate selection of constituents in combination with an optimized architecture. The results are also discussed under the aspect of tailored lightweight applications subjected to cyclic loading.https://www.mdpi.com/1996-1944/14/10/2564laminated metallic compositestoughening mechanismsinterfacesfatigue crack propagationfatigue crack growthlarge chamber SEM |
| spellingShingle | Philip Manuel Pohl Frank Kümmel Christopher Schunk Itziar Serrano-Munoz Henning Markötter Mathias Göken Heinz Werner Höppel About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites Materials laminated metallic composites toughening mechanisms interfaces fatigue crack propagation fatigue crack growth large chamber SEM |
| title | About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites |
| title_full | About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites |
| title_fullStr | About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites |
| title_full_unstemmed | About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites |
| title_short | About the Role of Interfaces on the Fatigue Crack Propagation in Laminated Metallic Composites |
| title_sort | about the role of interfaces on the fatigue crack propagation in laminated metallic composites |
| topic | laminated metallic composites toughening mechanisms interfaces fatigue crack propagation fatigue crack growth large chamber SEM |
| url | https://www.mdpi.com/1996-1944/14/10/2564 |
| work_keys_str_mv | AT philipmanuelpohl abouttheroleofinterfacesonthefatiguecrackpropagationinlaminatedmetalliccomposites AT frankkummel abouttheroleofinterfacesonthefatiguecrackpropagationinlaminatedmetalliccomposites AT christopherschunk abouttheroleofinterfacesonthefatiguecrackpropagationinlaminatedmetalliccomposites AT itziarserranomunoz abouttheroleofinterfacesonthefatiguecrackpropagationinlaminatedmetalliccomposites AT henningmarkotter abouttheroleofinterfacesonthefatiguecrackpropagationinlaminatedmetalliccomposites AT mathiasgoken abouttheroleofinterfacesonthefatiguecrackpropagationinlaminatedmetalliccomposites AT heinzwernerhoppel abouttheroleofinterfacesonthefatiguecrackpropagationinlaminatedmetalliccomposites |