In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al Composites
Spatially resolved elastic strains in the bulk interior of a laminated Ti-Al metal composite were studied during in situ tensile loading at strains up to 1.66% by a synchrotron-based micro-diffraction technique, namely differential aperture X-ray microscopy (DAXM). For both Al and Ti grains, deviato...
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MDPI AG
2021-04-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/4/668 |
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| author | Tianbo Yu Yan Du Guohua Fan Rozaliya Barabash Dorte Juul Jensen Yubin Zhang |
| author_facet | Tianbo Yu Yan Du Guohua Fan Rozaliya Barabash Dorte Juul Jensen Yubin Zhang |
| author_sort | Tianbo Yu |
| collection | DOAJ |
| description | Spatially resolved elastic strains in the bulk interior of a laminated Ti-Al metal composite were studied during in situ tensile loading at strains up to 1.66% by a synchrotron-based micro-diffraction technique, namely differential aperture X-ray microscopy (DAXM). For both Al and Ti grains, deviatoric elastic strains were estimated based on polychromatic X-ray microbeam diffraction, while lattice strains along the normal direction of the tensile sample were directly measured using monochromatic X-ray microbeam diffraction. The estimated deviatoric strains show large spatial variations, and the mean values are consistent with the external loading conditions, i.e., increasing tensile strain along the tensile direction and increasing compressive strain along the sample normal with increasing loading. The directly measured lattice strains also show large spatial variations, although the magnitude of this variation is smaller than that for the estimated deviatoric strain. The directly measured lattice strains in Ti grains are largely consistent with the external loading, whereas those in Al grains are in contradiction with the external loading. The causes of the experimental results are discussed and related to both the laminated microstructure of the composite material and the limitations of the techniques. |
| first_indexed | 2024-03-10T12:10:32Z |
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| id | doaj.art-5b184f0e5d6b406d91d406bdbe11eff2 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-10T12:10:32Z |
| publishDate | 2021-04-01 |
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| spelling | doaj.art-5b184f0e5d6b406d91d406bdbe11eff22023-11-21T16:14:59ZengMDPI AGMetals2075-47012021-04-0111466810.3390/met11040668In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al CompositesTianbo Yu0Yan Du1Guohua Fan2Rozaliya Barabash3Dorte Juul Jensen4Yubin Zhang5Department of Mechanical Engineering, Technical University of Denmark, DK 2800 Kgs. Lyngby, DenmarkNorthwest Institute for Nonferrous Metal Research, Xi’an 710016, ChinaKey Laboratory for Light-Weight Materials, Nanjing Tech University, Nanjing 211816, ChinaMaterials Science and Engineering Department, University of Tennessee, Knoxville, TN 37996, USADepartment of Mechanical Engineering, Technical University of Denmark, DK 2800 Kgs. Lyngby, DenmarkDepartment of Mechanical Engineering, Technical University of Denmark, DK 2800 Kgs. Lyngby, DenmarkSpatially resolved elastic strains in the bulk interior of a laminated Ti-Al metal composite were studied during in situ tensile loading at strains up to 1.66% by a synchrotron-based micro-diffraction technique, namely differential aperture X-ray microscopy (DAXM). For both Al and Ti grains, deviatoric elastic strains were estimated based on polychromatic X-ray microbeam diffraction, while lattice strains along the normal direction of the tensile sample were directly measured using monochromatic X-ray microbeam diffraction. The estimated deviatoric strains show large spatial variations, and the mean values are consistent with the external loading conditions, i.e., increasing tensile strain along the tensile direction and increasing compressive strain along the sample normal with increasing loading. The directly measured lattice strains also show large spatial variations, although the magnitude of this variation is smaller than that for the estimated deviatoric strain. The directly measured lattice strains in Ti grains are largely consistent with the external loading, whereas those in Al grains are in contradiction with the external loading. The causes of the experimental results are discussed and related to both the laminated microstructure of the composite material and the limitations of the techniques.https://www.mdpi.com/2075-4701/11/4/668elastic straindeviatoric strainlaminated metal compositeX-ray micro-diffraction |
| spellingShingle | Tianbo Yu Yan Du Guohua Fan Rozaliya Barabash Dorte Juul Jensen Yubin Zhang In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al Composites Metals elastic strain deviatoric strain laminated metal composite X-ray micro-diffraction |
| title | In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al Composites |
| title_full | In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al Composites |
| title_fullStr | In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al Composites |
| title_full_unstemmed | In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al Composites |
| title_short | In Situ Synchrotron X-ray Micro-Diffraction Investigation of Elastic Strains in Laminated Ti-Al Composites |
| title_sort | in situ synchrotron x ray micro diffraction investigation of elastic strains in laminated ti al composites |
| topic | elastic strain deviatoric strain laminated metal composite X-ray micro-diffraction |
| url | https://www.mdpi.com/2075-4701/11/4/668 |
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