Practical applications of the method of generalized pole figures

Perlovich, Yuriy; Isaenkova, Margarita; Fesenko, Vladimir; Krymskaya, Olga; Dobrokhotov, P. L.

doi:10.1088/1757-899x/82/1/012075

Cited by 3 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the first proposition to measure some of the orientation-dependent physical properties of polycrystalline materials was made, the first position-sensitive detectors were being installed in synchrotron sources and the detection technology appeared to be mature for attempting a complete GPF approach. However, the following steps for realizing the proposals were slow and only measurements of incomplete GPFs were achieved (Perlovich et al, 2015;Cruz-Gandarilla et al, 2012).…”

Section: The Methods Of Generalized Pole Figuresmentioning

confidence: 99%

Generalized pole figures from post-processing whole Debye–Scherrer patterns for microstructural analysis on deformed materials

Benatti¹,

Vincentis²,

Al-Hamdany³

et al. 2022

J Synchrotron Radiat

View full text Add to dashboard Cite

Debye–Scherrer patterns, obtained from X-ray diffraction experiments using synchrotron light in transmission geometry, were analysed to construct generalized pole figures, and further used as input for an orientation distribution function inversion algorithm. By using Langford's method for separating strain and size contributions to peak broadening, it was possible, for the first time, to obtain full domain size and dislocation density generalized distribution functions (GDFs). This method was applied to cold-rolled and annealed interstitial-free steel. The predictions made using GDFs were corroborated by electron backscatter diffraction measurements and were also consistent with what was previously known for this kind of material under these conditions.

show abstract

Section: The Methods Of Generalized Pole Figuresmentioning

confidence: 99%

Generalized pole figures from post-processing whole Debye–Scherrer patterns for microstructural analysis on deformed materials

Benatti¹,

Vincentis²,

Al-Hamdany³

et al. 2022

J Synchrotron Radiat

View full text Add to dashboard Cite

show abstract

“…We also can reveal the following orientation relations for Į' ĺ Ȗ phase transformation under heat treatment of CR samples: {100} Į' ‫}011{ۅ‬ Ȗ and <110> Į' ‫>433<ۅ‬ Ȗ with misorientation angle about 45 °. This distinction appears to be due to the different texture formation history and substructural state of grains attached to different texture components [20,21].…”

Section: Heat Treatmentmentioning

confidence: 99%

“…At the same time, the more scattered martensite's deformation texture results in the fine-dispersed austenite formation after HT, which hardens the material with maintaining a high level of plasticity. This difference needs latter studies of substructural inhomogeneity [20,21].…”

Section: Heat Treatmentmentioning

confidence: 99%

Regularities of structure and texture development in austenitic steel during cold rolling and heat treatment

Krymskaya¹,

Isaenkova²,

Fesenko³

et al. 2022

cisisr

View full text Add to dashboard Cite

The paper studies the regularities of the structure and texture formation in austenitic steel AISI 304 under cold rolling and subsequent heat treatment. Regularities of structure and texture formation depending on the rolling type and deformation degree were established. The ratios of main texture components, the volume fractions and the distortion of the martensite's crystalline lattice were analyzed. It is shown that mechanisms of the austenite ĺ martensite phase transformation in the course of cold rolling may change depending on various deformation schemes, as well as mechanisms of the reverse phase transformation variate under subsequent annealing. Herewith depending on the rolling type and deformation degree, the crystallographic texture formation of the nucleating austenite under the heat treatment can have single component or multi-component character and follows different orientation relations. The more scattered martensite texture after deformation results in the formation of fine-dispersed austenite, which hardens the material keeping a sufficient level of plasticity.

show abstract

Study of substructural heterogeneity of textured materials by the X-ray method of generalized direct pole figures

Perlovich

Isaenkova

Krymskaya

et al. 2020

Zavod. lab., Diagn. mater.

View full text Add to dashboard Cite

Any material can be considered a composite consisting of grains of different orientations which possess different properties depending on the history of their reorientation upon thermomechanical processing. A well-known selective character of X-ray methods is attributed to the fact that only grains of certain orientations participate in the formation of reflected radiation. A comprehensive description of the material including information about the substructure of grains of all orientations necessitates developing of the method providing description of the substructural state of grains located in the volume under study by analyzing the profile of x-ray lines. The proposed x-ray diffractometric method of Generalized Direct Pole Figures (GPF) which suggests combination of texture imaging and recording the profile of x-ray lines appeared to be rather efficient in a systematic x-ray study of the substructural heterogeneity of textured metallic materials. The measured parameters of the X-ray line profile — the true angular half-width β and angular peak position 2θ — are determined by the distortion (fragmentation) of the reflecting grains and interplanar spacings in their crystal lattice, respectively. The method provides a possibility to compare the substructure features of grains with different crystallographic orientations. An algorithm for calculation of the true physical half-width of the x-ray line using the necessary computer programs is presented. GPF β and GPF 2θ are presented for metal materials with hcp, fcc, and bcc crystalline lattices, as well as characteristic diagrams of their mutual correlation with texture PF. The use of the developed GPF method makes it possible to identify patterns of the formation of substructural heterogeneity during plastic deformation of metals.

show abstract

Practical applications of the method of generalized pole figures

Cited by 3 publications

References 2 publications

Generalized pole figures from post-processing whole Debye–Scherrer patterns for microstructural analysis on deformed materials

Generalized pole figures from post-processing whole Debye–Scherrer patterns for microstructural analysis on deformed materials

Regularities of structure and texture development in austenitic steel during cold rolling and heat treatment

Study of substructural heterogeneity of textured materials by the X-ray method of generalized direct pole figures

Contact Info

Product

Resources

About