Separation of XRD peak profiles in single-phase metals with bimodal grain structure to analyze stress partitioning
(2022) 42nd Risø International Symposium on Materials Science In IOP Conference Series: Materials Science and Engineering 1249.- Abstract
- Materials with bimodal grain size distributions have an attractive combination of strength and ductility. Harmonic structure materials are a category of bimodal-structure materials with a specific microstructure design. The deformation mechanisms of such novel materials during the early stages of deformation are not well understood. Thus, we deformed nickel with harmonic structure in tension until a true strain of 0.04 while recording powder diffraction patterns with high-energy synchrotron X-rays. Line profile analysis based on such data enables quantification of stress states and lattice defect densities in different phases in multi-phase materials. Bimodal size distributions in single-phase materials add extra complexity due to the... (More)
- Materials with bimodal grain size distributions have an attractive combination of strength and ductility. Harmonic structure materials are a category of bimodal-structure materials with a specific microstructure design. The deformation mechanisms of such novel materials during the early stages of deformation are not well understood. Thus, we deformed nickel with harmonic structure in tension until a true strain of 0.04 while recording powder diffraction patterns with high-energy synchrotron X-rays. Line profile analysis based on such data enables quantification of stress states and lattice defect densities in different phases in multi-phase materials. Bimodal size distributions in single-phase materials add extra complexity due to the absence of differences in composition and crystal structure causing the diffraction peaks from fine and coarse grains to appear at the same diffraction angles. Therefore, prior to any meaningful line profile analysis, the respective diffraction profiles need to be separated. A general method for automatically separating profiles originating from different grain fractions in bimodal materials is presented in this work. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/8f24f6b5-e095-40f9-865e-f681dc7b3c04
- author
- Sjögren, Elis LU ; Pantleon, Wolfgang ; Ahadi, Aylin LU ; Hegedüs, Zoltan ; Lienert, Ulrich ; Tsuji, Nobuhiro ; Ameyama, Kei and Orlov, Dmytro LU
- organization
- publishing date
- 2022-07-01
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 42nd Risø International Symposium on Materials Science: Microstructural variability: Processing, analysis, mechanisms and properties : 5–9 September 2022, Department of Civil and Mechanical Engineering, Technical University of Denmark, Denmark - 5–9 September 2022, Department of Civil and Mechanical Engineering, Technical University of Denmark, Denmark
- series title
- IOP Conference Series: Materials Science and Engineering
- volume
- 1249
- pages
- 6 pages
- publisher
- IOP Publishing
- conference name
- 42nd Risø International Symposium on Materials Science
- conference location
- Risø, Denmark
- conference dates
- 2022-09-05 - 2022-09-09
- ISSN
- 1757-899X
- DOI
- 10.1088/1757-899x/1249/1/012040
- project
- Topological control of microstructures for advanced material engineering
- Microstructure design in metallic materials using deformation processing based techniques
- Studying Deformation and Fracture in Heterogeneous 3D-Architectured Material Microstructures
- language
- English
- LU publication?
- yes
- id
- 8f24f6b5-e095-40f9-865e-f681dc7b3c04
- date added to LUP
- 2022-08-26 20:38:45
- date last changed
- 2022-11-09 02:41:43
@inproceedings{8f24f6b5-e095-40f9-865e-f681dc7b3c04, abstract = {{Materials with bimodal grain size distributions have an attractive combination of strength and ductility. Harmonic structure materials are a category of bimodal-structure materials with a specific microstructure design. The deformation mechanisms of such novel materials during the early stages of deformation are not well understood. Thus, we deformed nickel with harmonic structure in tension until a true strain of 0.04 while recording powder diffraction patterns with high-energy synchrotron X-rays. Line profile analysis based on such data enables quantification of stress states and lattice defect densities in different phases in multi-phase materials. Bimodal size distributions in single-phase materials add extra complexity due to the absence of differences in composition and crystal structure causing the diffraction peaks from fine and coarse grains to appear at the same diffraction angles. Therefore, prior to any meaningful line profile analysis, the respective diffraction profiles need to be separated. A general method for automatically separating profiles originating from different grain fractions in bimodal materials is presented in this work.}}, author = {{Sjögren, Elis and Pantleon, Wolfgang and Ahadi, Aylin and Hegedüs, Zoltan and Lienert, Ulrich and Tsuji, Nobuhiro and Ameyama, Kei and Orlov, Dmytro}}, booktitle = {{42nd Risø International Symposium on Materials Science: Microstructural variability: Processing, analysis, mechanisms and properties : 5–9 September 2022, Department of Civil and Mechanical Engineering, Technical University of Denmark, Denmark}}, issn = {{1757-899X}}, language = {{eng}}, month = {{07}}, publisher = {{IOP Publishing}}, series = {{IOP Conference Series: Materials Science and Engineering}}, title = {{Separation of XRD peak profiles in single-phase metals with bimodal grain structure to analyze stress partitioning}}, url = {{http://dx.doi.org/10.1088/1757-899x/1249/1/012040}}, doi = {{10.1088/1757-899x/1249/1/012040}}, volume = {{1249}}, year = {{2022}}, }