Characterizing dislocation configurations and their evolution during creep of a new 12% Cr steel

S.D. Yadav, M. EI-Tahawy, Szilvia Kalácska, Mária Dománková, David Canelo Yubero, Maria Cecilia Poletti

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Abstract

In this research, different types of dislocations are characterized and quantified in a newly developed 12% Cr steel in as-received as well as in crept conditions. X-ray diffraction (XRD) patterns are analyzed using three different models. The dislocation densities are determined employing the Convolution Multiple Whole Profile (CMWP) fitting, the analysis of the asymptotic part of the X-ray line profile (Groma's method), and the Rietveld refinement coupling Popa's and Williamson-Smallman approaches. CMWP method is used to measure the internal dislocation density inside the subgrains consisting of mobile and dipole dislocations, and the results show good agreement with Transmission Electron Microscopy (TEM) measurements. Groma's method is used to evaluate the total dislocation density, with results comparable to those obtained from the combination of Electron Backscatter Diffraction (EBSD) and TEM. Rietveld method gives the internal dislocation density or mobile dislocation density depending on the model chosen. The experimentally determined results such as creep strain, dislocation densities and subgrain size are compared with theoretical predictions and they are found in good agreement.
Originalspracheenglisch
Seiten (von - bis)387-397
FachzeitschriftMaterials characterization
Jahrgang134
PublikationsstatusVeröffentlicht - Dez 2017

Fingerprint

Steel
Convolution
Creep
steels
Transmission electron microscopy
Rietveld method
Rietveld refinement
configurations
Dislocations (crystals)
Electron diffraction
Diffraction patterns
X ray diffraction
X rays
convolution integrals
transmission electron microscopy
x rays
diffraction patterns
dipoles
profiles
predictions

Dies zitieren

Yadav, S. D., EI-Tahawy, M., Kalácska, S., Dománková, M., Canelo Yubero, D., & Poletti, M. C. (2017). Characterizing dislocation configurations and their evolution during creep of a new 12% Cr steel. Materials characterization, 134, 387-397.

Characterizing dislocation configurations and their evolution during creep of a new 12% Cr steel. / Yadav, S.D.; EI-Tahawy, M.; Kalácska, Szilvia; Dománková, Mária ; Canelo Yubero, David; Poletti, Maria Cecilia.

in: Materials characterization, Jahrgang 134, 12.2017, S. 387-397.

Publikation: Beitrag in einer FachzeitschriftArtikelForschungBegutachtung

Yadav, SD, EI-Tahawy, M, Kalácska, S, Dománková, M, Canelo Yubero, D & Poletti, MC 2017, 'Characterizing dislocation configurations and their evolution during creep of a new 12% Cr steel' Materials characterization, Jg. 134, S. 387-397.
Yadav SD, EI-Tahawy M, Kalácska S, Dománková M, Canelo Yubero D, Poletti MC. Characterizing dislocation configurations and their evolution during creep of a new 12% Cr steel. Materials characterization. 2017 Dez;134:387-397.
Yadav, S.D. ; EI-Tahawy, M. ; Kalácska, Szilvia ; Dománková, Mária ; Canelo Yubero, David ; Poletti, Maria Cecilia. / Characterizing dislocation configurations and their evolution during creep of a new 12% Cr steel. in: Materials characterization. 2017 ; Jahrgang 134. S. 387-397.
@article{1bd21e3493534963a1517e793a8c5af5,
title = "Characterizing dislocation configurations and their evolution during creep of a new 12{\%} Cr steel",
abstract = "In this research, different types of dislocations are characterized and quantified in a newly developed 12{\%} Cr steel in as-received as well as in crept conditions. X-ray diffraction (XRD) patterns are analyzed using three different models. The dislocation densities are determined employing the Convolution Multiple Whole Profile (CMWP) fitting, the analysis of the asymptotic part of the X-ray line profile (Groma's method), and the Rietveld refinement coupling Popa's and Williamson-Smallman approaches. CMWP method is used to measure the internal dislocation density inside the subgrains consisting of mobile and dipole dislocations, and the results show good agreement with Transmission Electron Microscopy (TEM) measurements. Groma's method is used to evaluate the total dislocation density, with results comparable to those obtained from the combination of Electron Backscatter Diffraction (EBSD) and TEM. Rietveld method gives the internal dislocation density or mobile dislocation density depending on the model chosen. The experimentally determined results such as creep strain, dislocation densities and subgrain size are compared with theoretical predictions and they are found in good agreement.",
author = "S.D. Yadav and M. EI-Tahawy and Szilvia Kal{\'a}cska and M{\'a}ria Dom{\'a}nkov{\'a} and {Canelo Yubero}, David and Poletti, {Maria Cecilia}",
year = "2017",
month = "12",
language = "English",
volume = "134",
pages = "387--397",
journal = "Materials characterization",
issn = "1044-5803",
publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Characterizing dislocation configurations and their evolution during creep of a new 12% Cr steel

AU - Yadav, S.D.

AU - EI-Tahawy, M.

AU - Kalácska, Szilvia

AU - Dománková, Mária

AU - Canelo Yubero, David

AU - Poletti, Maria Cecilia

PY - 2017/12

Y1 - 2017/12

N2 - In this research, different types of dislocations are characterized and quantified in a newly developed 12% Cr steel in as-received as well as in crept conditions. X-ray diffraction (XRD) patterns are analyzed using three different models. The dislocation densities are determined employing the Convolution Multiple Whole Profile (CMWP) fitting, the analysis of the asymptotic part of the X-ray line profile (Groma's method), and the Rietveld refinement coupling Popa's and Williamson-Smallman approaches. CMWP method is used to measure the internal dislocation density inside the subgrains consisting of mobile and dipole dislocations, and the results show good agreement with Transmission Electron Microscopy (TEM) measurements. Groma's method is used to evaluate the total dislocation density, with results comparable to those obtained from the combination of Electron Backscatter Diffraction (EBSD) and TEM. Rietveld method gives the internal dislocation density or mobile dislocation density depending on the model chosen. The experimentally determined results such as creep strain, dislocation densities and subgrain size are compared with theoretical predictions and they are found in good agreement.

AB - In this research, different types of dislocations are characterized and quantified in a newly developed 12% Cr steel in as-received as well as in crept conditions. X-ray diffraction (XRD) patterns are analyzed using three different models. The dislocation densities are determined employing the Convolution Multiple Whole Profile (CMWP) fitting, the analysis of the asymptotic part of the X-ray line profile (Groma's method), and the Rietveld refinement coupling Popa's and Williamson-Smallman approaches. CMWP method is used to measure the internal dislocation density inside the subgrains consisting of mobile and dipole dislocations, and the results show good agreement with Transmission Electron Microscopy (TEM) measurements. Groma's method is used to evaluate the total dislocation density, with results comparable to those obtained from the combination of Electron Backscatter Diffraction (EBSD) and TEM. Rietveld method gives the internal dislocation density or mobile dislocation density depending on the model chosen. The experimentally determined results such as creep strain, dislocation densities and subgrain size are compared with theoretical predictions and they are found in good agreement.

M3 - Article

VL - 134

SP - 387

EP - 397

JO - Materials characterization

JF - Materials characterization

SN - 1044-5803

ER -