Orientation dependence of the nano-indentation behaviour of pure Tungsten
Coupling of nano-indentation and crystal plasticity finite element (CPFE) simulations is widely used to quantitatively probe the small-scale mechanical behaviour of materials. Earlier studies showed that CPFE can successfully reproduce the load-displacement curves and surface morphology for differen...
| Main Authors: | , , , , |
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| Format: | Journal article |
| Language: | English |
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Elsevier
2020
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| _version_ | 1826287103785304064 |
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| author | Yu, H Das, S Yu, H Karamched, P Tarleton, E Hofmann, F |
| author_facet | Yu, H Das, S Yu, H Karamched, P Tarleton, E Hofmann, F |
| author_sort | Yu, H |
| collection | OXFORD |
| description | Coupling of nano-indentation and crystal plasticity finite element (CPFE) simulations is widely used to quantitatively probe the small-scale mechanical behaviour of materials. Earlier studies showed that CPFE can successfully reproduce the load-displacement curves and surface morphology for different crystal orientations. Here, we report the orientation dependence of residual lattice strain patterns and dislocation structures in tungsten. For orientations with one or more Burgers vectors close to parallel to the sample surface, dislocation movement and residual lattice strains are confined to long, narrow channels. CPFE is unable to reproduce this behaviour, and our analysis reveals the responsible underlying mechanisms. |
| first_indexed | 2024-03-07T01:53:37Z |
| format | Journal article |
| id | oxford-uuid:9af96283-ff35-48d6-8909-36498f1fb616 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:53:37Z |
| publishDate | 2020 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | oxford-uuid:9af96283-ff35-48d6-8909-36498f1fb6162022-03-27T00:25:18ZOrientation dependence of the nano-indentation behaviour of pure TungstenJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:9af96283-ff35-48d6-8909-36498f1fb616EnglishSymplectic ElementsElsevier2020Yu, HDas, SYu, HKaramched, PTarleton, EHofmann, FCoupling of nano-indentation and crystal plasticity finite element (CPFE) simulations is widely used to quantitatively probe the small-scale mechanical behaviour of materials. Earlier studies showed that CPFE can successfully reproduce the load-displacement curves and surface morphology for different crystal orientations. Here, we report the orientation dependence of residual lattice strain patterns and dislocation structures in tungsten. For orientations with one or more Burgers vectors close to parallel to the sample surface, dislocation movement and residual lattice strains are confined to long, narrow channels. CPFE is unable to reproduce this behaviour, and our analysis reveals the responsible underlying mechanisms. |
| spellingShingle | Yu, H Das, S Yu, H Karamched, P Tarleton, E Hofmann, F Orientation dependence of the nano-indentation behaviour of pure Tungsten |
| title | Orientation dependence of the nano-indentation behaviour of pure Tungsten |
| title_full | Orientation dependence of the nano-indentation behaviour of pure Tungsten |
| title_fullStr | Orientation dependence of the nano-indentation behaviour of pure Tungsten |
| title_full_unstemmed | Orientation dependence of the nano-indentation behaviour of pure Tungsten |
| title_short | Orientation dependence of the nano-indentation behaviour of pure Tungsten |
| title_sort | orientation dependence of the nano indentation behaviour of pure tungsten |
| work_keys_str_mv | AT yuh orientationdependenceofthenanoindentationbehaviourofpuretungsten AT dass orientationdependenceofthenanoindentationbehaviourofpuretungsten AT yuh orientationdependenceofthenanoindentationbehaviourofpuretungsten AT karamchedp orientationdependenceofthenanoindentationbehaviourofpuretungsten AT tarletone orientationdependenceofthenanoindentationbehaviourofpuretungsten AT hofmannf orientationdependenceofthenanoindentationbehaviourofpuretungsten |