Interface Strength, Damage and Fracture between Ceramic Films and Metallic Substrates
Interface strength, damage and fracture properties between ceramic films and metallic substrates affect the service reliability of related parts. The films’ thickness, grain size and residual stress affect the interface properties and fracture behavior, thus related studies attract great attention....
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/14/2/353 |
| _version_ | 1797412401844322304 |
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| author | Lihong Liang Linfeng Chen Luobing Wu Huifeng Tan |
| author_facet | Lihong Liang Linfeng Chen Luobing Wu Huifeng Tan |
| author_sort | Lihong Liang |
| collection | DOAJ |
| description | Interface strength, damage and fracture properties between ceramic films and metallic substrates affect the service reliability of related parts. The films’ thickness, grain size and residual stress affect the interface properties and fracture behavior, thus related studies attract great attention. In this paper, the interface damage evolution and fracture behavior between ceramic films and metallic substrates were simulated by developing a three dimensional finite element model of alumina films on Ni substrates with cohesive elements in the interfaces. The interface fracture energy as a key parameter in the simulation was firstly determined based on its thermodynamic definition. The simulation results show the Mises stress distribution and damage evolution of the film/substrate structures during uniaxial tensile loading. Specially, when grain size of the films is in nanoscale, the interface strength increases obviously, agreeing with the previous experimental results. The effects of residual stress on interface properties was further simulated. The interface strength was found to decrease with increasing radial residual force and the axial residual pressure increases the interface strength. When the thickness of the films increases, the interface strength keeps a constant but the speed of interface damage becomes faster, that is, the thicker films show catastrophic fracture. The underlying mechanism of damage speed was analyzed. Understanding these size effects and the effects of residual stress is helpful to guide the design of related parts. |
| first_indexed | 2024-03-09T05:02:31Z |
| format | Article |
| id | doaj.art-dacff30edbf84c2481b27def2fb61dbc |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-09T05:02:31Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-dacff30edbf84c2481b27def2fb61dbc2023-12-03T12:58:58ZengMDPI AGMaterials1996-19442021-01-0114235310.3390/ma14020353Interface Strength, Damage and Fracture between Ceramic Films and Metallic SubstratesLihong Liang0Linfeng Chen1Luobing Wu2Huifeng Tan3Beijing Key Lab of Health Monitoring and Self-Recovery for High-End Mechanical Equipment, College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaBeijing Key Lab of Health Monitoring and Self-Recovery for High-End Mechanical Equipment, College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaBeijing Key Lab of Health Monitoring and Self-Recovery for High-End Mechanical Equipment, College of Mechanical and Electrical Engineering, Beijing University of Chemical Technology, Beijing 100029, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, Heilongjiang, ChinaInterface strength, damage and fracture properties between ceramic films and metallic substrates affect the service reliability of related parts. The films’ thickness, grain size and residual stress affect the interface properties and fracture behavior, thus related studies attract great attention. In this paper, the interface damage evolution and fracture behavior between ceramic films and metallic substrates were simulated by developing a three dimensional finite element model of alumina films on Ni substrates with cohesive elements in the interfaces. The interface fracture energy as a key parameter in the simulation was firstly determined based on its thermodynamic definition. The simulation results show the Mises stress distribution and damage evolution of the film/substrate structures during uniaxial tensile loading. Specially, when grain size of the films is in nanoscale, the interface strength increases obviously, agreeing with the previous experimental results. The effects of residual stress on interface properties was further simulated. The interface strength was found to decrease with increasing radial residual force and the axial residual pressure increases the interface strength. When the thickness of the films increases, the interface strength keeps a constant but the speed of interface damage becomes faster, that is, the thicker films show catastrophic fracture. The underlying mechanism of damage speed was analyzed. Understanding these size effects and the effects of residual stress is helpful to guide the design of related parts.https://www.mdpi.com/1996-1944/14/2/353mechanical propertiesmodellingceramic filmsinterface strengthfracture energy |
| spellingShingle | Lihong Liang Linfeng Chen Luobing Wu Huifeng Tan Interface Strength, Damage and Fracture between Ceramic Films and Metallic Substrates Materials mechanical properties modelling ceramic films interface strength fracture energy |
| title | Interface Strength, Damage and Fracture between Ceramic Films and Metallic Substrates |
| title_full | Interface Strength, Damage and Fracture between Ceramic Films and Metallic Substrates |
| title_fullStr | Interface Strength, Damage and Fracture between Ceramic Films and Metallic Substrates |
| title_full_unstemmed | Interface Strength, Damage and Fracture between Ceramic Films and Metallic Substrates |
| title_short | Interface Strength, Damage and Fracture between Ceramic Films and Metallic Substrates |
| title_sort | interface strength damage and fracture between ceramic films and metallic substrates |
| topic | mechanical properties modelling ceramic films interface strength fracture energy |
| url | https://www.mdpi.com/1996-1944/14/2/353 |
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