Application of Different Diffraction Peak Profile Analysis Methods to Study the Structure Evolution of Cold-Rolled Hexagonal α-Titanium

Иванов, И. А.; Lazurenko, Daria V.; Stark, Andreas; Pyczak, Florian; Thömmes, Alexander; Батаев, И. А.

doi:10.1007/s12540-019-00309-z

Cited by 14 publications

(6 citation statements)

References 28 publications

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“…The

values are plotted as a function of

. More detailed description of these plottings can be found elsewhere [ 9 ]. …”

Section: Resultsmentioning

confidence: 99%

“…It is typically believed, that

depends on dislocation density (

) and CSR size (

) according to Taylor equation (

, where

is material yield strength;

is shear modulus

is the magnitude of the Burgers vector;

is a geometric factor depending on the distribution of interacting dislocations and their type) and Kuhlmann-Wilsdorf equation (

, where

is the constant of the resistance of boundaries to penetration of dislocations;

is cell diameter). In several works, it was shown that there is a strong correlation between structural parameters measured using XRD and the strength and hardness of the sample [ 8 , 9 , 28 ]. In the current study, the correlation between

and

is 0.87; between

and

is 0.94.…”

Section: Resultsmentioning

confidence: 99%

“…A detailed description of these models and examples of their practical applications can be found in the publications by Ungar et al. [ 10 , 11 , 12 , 25 ] as well as in our previous study [ 9 ].…”

Section: Methodsmentioning

confidence: 99%

“…For instance, for severely deformed iron the correction for the elastic modulus significantly reduced the approximation error [ 8 ]. At the same time, this approach was not so effective for the analysis of polycrystalline hexagonal materials [ 9 ]. Therefore, the most expedient approach is to use the dislocation-based models of strain anisotropy of crystal lattice.…”

Section: Introductionmentioning

confidence: 99%

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Deconvolution-based peak profile analysis methods for characterization of CoCrFeMnNi high-entropy alloy

Иванов

Émurlaev

Купер

et al. 2022

Heliyon

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“…The

values are plotted as a function of

. More detailed description of these plottings can be found elsewhere [ 9 ]. …”

Section: Resultsmentioning

confidence: 99%

“…It is typically believed, that

depends on dislocation density (

) and CSR size (

) according to Taylor equation (

, where

is material yield strength;

is shear modulus

is the magnitude of the Burgers vector;

is a geometric factor depending on the distribution of interacting dislocations and their type) and Kuhlmann-Wilsdorf equation (

, where

is the constant of the resistance of boundaries to penetration of dislocations;

and

is 0.87; between

and

is 0.94.…”

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Deconvolution-based peak profile analysis methods for characterization of CoCrFeMnNi high-entropy alloy

Иванов

Émurlaev

Купер

et al. 2022

Heliyon

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“…Согласно ряду литературных источников модифицированный метод Вильямсона-Холла отличается наиболее низкой ошибкой аппроксимации [11,15]. Более подробное описание реализации этого метода описано в работах [11,15,16].…”

Section: получение образцов методы исследования структуры и свойств м...unclassified

Comparison of approaches based on the Williamson-Hall method for analyzing the structure of an Al0.3CoCrFeNi high-entropy alloy after cold deformation

Иванов¹,

Safarova²,

Bataeva³

et al. 2022

Metal Working and Material Science

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Introduction. High-entropy alloys (HEAs) belong to a new and promising class of materials that are attracting the attention of both scientists and engineers from all over the world. Among all alloys of the AlxCoCrFeNi system, HEAs with x ≤ 0.3 attract special attention. Materials with this composition are characterized by the presence of only one phase with a face-centered cubic lattice (FCC). Such alloys have high ductility, excellent corrosion resistance and phase stability at high temperatures. The purpose of this work is to compare several methods of profile analysis on the example of plastically deformed ingots of a high-entropy Al0.3CoCrFeNi alloy. The methods of investigation. Using several methods of profile analysis of X-ray diffraction patterns, the structures of the cold-worked high-entropy alloy Al0.3CoCrFeNi are studied. In addition to the classical Williamson-Hall method, the analysis was carried out using a modified one, as well as a method that takes into account the anisotropy of the elastic properties of the crystal lattice. Research material. Ingots of the high-entropy Al0.3CoCrFeNi alloy deformed by cold rolling with a maximum reduction ratio of 80% were used as the object of the study. Samples were cut from the obtained blanks, which were studied by the method of synchrotron radiation diffraction according to the “transmission” scheme along two (longitudinal (RD) and transverse (TD)) directions of rolled products. Results and discussion. It is shown that the use of the classical Williamson-Hall method leads to a significant error in the approximation of experimental results. The modified Williamson-Hall method has the smallest approximation error and can be recommended for studying the Al0.3CoCrFeNi alloy. An analysis of deformed samples using this method made it possible to reveal several features of the formation of defects in the crystalline structure, which are in good agreement with the classical concepts of the mechanisms of plastic deformation. First, an increase in the degree of deformation of the high-entropy Al0.3CoCrFeNi alloy leads to an almost uniform increase in the number of twins and stacking faults. Secondly, with an increase in the degree of reduction, there is a decrease in the fraction of edge dislocations and an increase in the fraction of screw dislocations in the material. The results obtained correlate well with the results of microhardness measurements.

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Particle/substrate interaction and coating structure formation during detonation spraying of copper powder on steel

Riabinkina,

Batraev,

Ulianitsky

et al. 2023

Int J Adv Manuf Technol

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Application of Different Diffraction Peak Profile Analysis Methods to Study the Structure Evolution of Cold-Rolled Hexagonal α-Titanium

Cited by 14 publications

References 28 publications

Deconvolution-based peak profile analysis methods for characterization of CoCrFeMnNi high-entropy alloy

Deconvolution-based peak profile analysis methods for characterization of CoCrFeMnNi high-entropy alloy

Comparison of approaches based on the Williamson-Hall method for analyzing the structure of an Al0.3CoCrFeNi high-entropy alloy after cold deformation

Particle/substrate interaction and coating structure formation during detonation spraying of copper powder on steel

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