Academic Journal
Application of Rietveld refinement in orientated material structures
| العنوان: | Application of Rietveld refinement in orientated material structures |
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| المؤلفون: | Nagy, E, Kristály, F, Mertinger, V |
| المصدر: | IOP Conference Series: Materials Science and Engineering ; volume 903, issue 1, page 012028 ; ISSN 1757-8981 1757-899X |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2020 |
| الوصف: | The phase analysis based on the X-ray diffraction method is a well-known procedure for determining the phases crystalline in the sample. The phase identification is simple in case of the isotropic powder samples, however the standard investigation protocol cannot always be used, e.g. in case if the presence of anisotropy like preferred orientation (PO) is observed. In case of steels, the diffracted intensity of a given phases is influenced by the directional phase development having a needle character caused by the martensitic transformation; some reflections can even disappear from the diffractograms as a consequence of the strong PO. One impacting consequence of PO is over quantitative evaluation, percentages close to actual values are obtained only if diffracted intensity is integrated for the whole measured 2θ range for each phase and anomalous intensities caused by PO are corrected. Incorrect quantitative values were obtained by using the full-profile analysis method in the course of our earlier investigations, because no correction method had been available for the recognition and evaluation of the orientated structures in phase-identification of metals. By using the Rietveld refinement method for whole measured 2θ range, both the PO and the size-strain broadening effects are accounted for. Strain results from stress developing in the lattice and can be taken into consideration in the calculated model and results are corrected to accurately describe the real structure. In the course of our research work, orientated, complex structures developing in the Cu-base alloys were investigated by using the Rietveld refinement method. The quantity of phases was determined in the different samples in which clear signs of the used technological processes could be observed in the structures. The character of orientation appearing in the structure was observed, evaluated and the necessary corrections were performed. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| DOI: | 10.1088/1757-899x/903/1/012028 |
| DOI: | 10.1088/1757-899X/903/1/012028/pdf |
| DOI: | 10.1088/1757-899X/903/1/012028 |
| الاتاحة: | http://dx.doi.org/10.1088/1757-899x/903/1/012028 https://iopscience.iop.org/article/10.1088/1757-899X/903/1/012028/pdf https://iopscience.iop.org/article/10.1088/1757-899X/903/1/012028 |
| Rights: | http://creativecommons.org/licenses/by/3.0/ ; https://iopscience.iop.org/info/page/text-and-data-mining |
| رقم الانضمام: | edsbas.C411E27F |
| قاعدة البيانات: | BASE |
| DOI: | 10.1088/1757-899x/903/1/012028 |
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