Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief Review
Nanoscale metallic multilayer films (NMMFs) have captured scientific interests on their mechanical responses. Compared with the properties of monolithic films, multilayers possess unique high strength as the individual layer thickness reduces to the nanoscale, which is benefited from the plentiful h...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-10-01
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| Series: | Applied Sciences |
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| Online Access: | http://www.mdpi.com/2076-3417/8/10/1821 |
| _version_ | 1811278704558473216 |
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| author | Qing Zhou Yue Ren Yin Du Dongpeng Hua Weichao Han |
| author_facet | Qing Zhou Yue Ren Yin Du Dongpeng Hua Weichao Han |
| author_sort | Qing Zhou |
| collection | DOAJ |
| description | Nanoscale metallic multilayer films (NMMFs) have captured scientific interests on their mechanical responses. Compared with the properties of monolithic films, multilayers possess unique high strength as the individual layer thickness reduces to the nanoscale, which is benefited from the plentiful hetero-interfaces. However, NMMFs always exhibit a low fracture toughness and ductility, which seriously hinders their practical applications. While there have been reviews on the strengthening and deformation mechanisms of microlaminate, rapid developments in nanotechnology have brought an urgent requirement for an overview focused on the cracking and toughening mechanisms in nanoscale metallic multilayers. This article provides an extensive review on the structure, standard methodology and fracture mechanisms of NMMFs. A number of issues about the crack-related properties of NMMFs have been displayed, such as fracture toughness, wear resistance, adhesion energy, and plastic instability. Taken together, it is hoped that this review will achieve the following two purposes: (1) introducing the size-dependent cracking and toughness performance in NMMFs; and (2) offer a better understanding of the role interfaces displayed in toughening mechanisms. Finally, we list a few questions we concerned, which may shed light on further development. |
| first_indexed | 2024-04-13T00:40:39Z |
| format | Article |
| id | doaj.art-0bed624efb004e37b9bfe24ae1c00beb |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-04-13T00:40:39Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-0bed624efb004e37b9bfe24ae1c00beb2022-12-22T03:10:10ZengMDPI AGApplied Sciences2076-34172018-10-01810182110.3390/app8101821app8101821Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief ReviewQing Zhou0Yue Ren1Yin Du2Dongpeng Hua3Weichao Han4State Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, ChinaState Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, ChinaState Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, ChinaState Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, ChinaState Key Laboratory of Solidification Processing, Center of Advanced Lubrication and Seal Materials, Northwestern Polytechnical University, Xi’an 710072, Shaanxi, ChinaNanoscale metallic multilayer films (NMMFs) have captured scientific interests on their mechanical responses. Compared with the properties of monolithic films, multilayers possess unique high strength as the individual layer thickness reduces to the nanoscale, which is benefited from the plentiful hetero-interfaces. However, NMMFs always exhibit a low fracture toughness and ductility, which seriously hinders their practical applications. While there have been reviews on the strengthening and deformation mechanisms of microlaminate, rapid developments in nanotechnology have brought an urgent requirement for an overview focused on the cracking and toughening mechanisms in nanoscale metallic multilayers. This article provides an extensive review on the structure, standard methodology and fracture mechanisms of NMMFs. A number of issues about the crack-related properties of NMMFs have been displayed, such as fracture toughness, wear resistance, adhesion energy, and plastic instability. Taken together, it is hoped that this review will achieve the following two purposes: (1) introducing the size-dependent cracking and toughness performance in NMMFs; and (2) offer a better understanding of the role interfaces displayed in toughening mechanisms. Finally, we list a few questions we concerned, which may shed light on further development.http://www.mdpi.com/2076-3417/8/10/1821nanoscale metallic multilayercrackingfracture behaviortoughening |
| spellingShingle | Qing Zhou Yue Ren Yin Du Dongpeng Hua Weichao Han Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief Review Applied Sciences nanoscale metallic multilayer cracking fracture behavior toughening |
| title | Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief Review |
| title_full | Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief Review |
| title_fullStr | Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief Review |
| title_full_unstemmed | Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief Review |
| title_short | Cracking and Toughening Mechanisms in Nanoscale Metallic Multilayer Films: A Brief Review |
| title_sort | cracking and toughening mechanisms in nanoscale metallic multilayer films a brief review |
| topic | nanoscale metallic multilayer cracking fracture behavior toughening |
| url | http://www.mdpi.com/2076-3417/8/10/1821 |
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