Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loading
Wire Arc-Based Additive manufacturing is a high deposition rate process suitable for building large-scale aerospace components. However, the larger heat source can cause greater microstructural heterogeneity and, in particular, a coarse columnar ß grain structure. The effect of the subsequent relate...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2020-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_03008.pdf |
| _version_ | 1819146100229013504 |
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| author | Lunt David Ho Alistair Davis Alec Martina Filomeno Hönnige Jan Quinta da Fonseca João Prangnell Phillip |
| author_facet | Lunt David Ho Alistair Davis Alec Martina Filomeno Hönnige Jan Quinta da Fonseca João Prangnell Phillip |
| author_sort | Lunt David |
| collection | DOAJ |
| description | Wire Arc-Based Additive manufacturing is a high deposition rate process suitable for building large-scale aerospace components. However, the larger heat source can cause greater microstructural heterogeneity and, in particular, a coarse columnar ß grain structure. The effect of the subsequent related transformation microstructure heterogeneity on the mechanical behaviour is investigated, in both standard WAAM materials and samples subjected to inter-pass rolling, which leads to substantial ß grain refinement and texture randomisation. Full-field strain maps were produced by digital image correlation, using tensile samples loaded in different orientations. When loaded normal to the columnar grain structure, it is shown that the coarse ß grains lead to a highly heterogeneous deformation distribution, which is linked the presence of dominant hard and soft α variants in texture colonies within each parent ß grain. ß grain refinement through the application of inter-pass rolling was found to be very effective at homogenising the strain localisation for all test orientations. |
| first_indexed | 2024-12-22T13:08:33Z |
| format | Article |
| id | doaj.art-854286158cd04d779dfb3cf94d69ce77 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-22T13:08:33Z |
| publishDate | 2020-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-854286158cd04d779dfb3cf94d69ce772022-12-21T18:24:48ZengEDP SciencesMATEC Web of Conferences2261-236X2020-01-013210300810.1051/matecconf/202032103008matecconf_ti2019_03008Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loadingLunt David0Ho Alistair1Davis Alec2Martina Filomeno3Hönnige Jan4Quinta da Fonseca João5Prangnell Phillip6University of ManchesterUniversity of ManchesterUniversity of ManchesterWelding Engineering and Laser Processing Centre, Cranfield UniversityWelding Engineering and Laser Processing Centre, Cranfield UniversityUniversity of ManchesterUniversity of ManchesterWire Arc-Based Additive manufacturing is a high deposition rate process suitable for building large-scale aerospace components. However, the larger heat source can cause greater microstructural heterogeneity and, in particular, a coarse columnar ß grain structure. The effect of the subsequent related transformation microstructure heterogeneity on the mechanical behaviour is investigated, in both standard WAAM materials and samples subjected to inter-pass rolling, which leads to substantial ß grain refinement and texture randomisation. Full-field strain maps were produced by digital image correlation, using tensile samples loaded in different orientations. When loaded normal to the columnar grain structure, it is shown that the coarse ß grains lead to a highly heterogeneous deformation distribution, which is linked the presence of dominant hard and soft α variants in texture colonies within each parent ß grain. ß grain refinement through the application of inter-pass rolling was found to be very effective at homogenising the strain localisation for all test orientations.https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_03008.pdf |
| spellingShingle | Lunt David Ho Alistair Davis Alec Martina Filomeno Hönnige Jan Quinta da Fonseca João Prangnell Phillip Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loading MATEC Web of Conferences |
| title | Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loading |
| title_full | Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loading |
| title_fullStr | Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loading |
| title_full_unstemmed | Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loading |
| title_short | Microscopic strain localisation in WAAM Ti-6Al-4V during uniaxial tensile loading |
| title_sort | microscopic strain localisation in waam ti 6al 4v during uniaxial tensile loading |
| url | https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_03008.pdf |
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