EBSD analysis of grain-refinement mechanisms operating during equal-channel angular pressing of commercial-purity titanium.

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EBSD analysis of grain-refinement mechanisms operating during equal-channel angular pressing of commercial-purity titanium. / Dyakonov, G.S.; Semenova, I.P.; Valiev, R.Z.; Mironov, S.; Semiatin, S.L.

In: Acta Materialia, Vol. 173, 2019, p. 174-183.

Research output: Contribution to journal › Article

BibTeX

@article{ac5366cd24eb4d02af5b028baaeb6929,

title = "EBSD analysis of grain-refinement mechanisms operating during equal-channel angular pressing of commercial-purity titanium.",

abstract = "Electron backscatter diffraction was applied to examine the fundamental mechanisms governing the development of ultrafine-grain microstructures during equal-channel angular pressing of commercial-purity titanium. Texture analysis and examination of misorientation distributions revealed the enhanced activity of non-prismatic slip systems at prior grain boundaries, which promoted the preferential development of deformation-induced boundaries in these areas. By contrast, deformation in the interior of grains was dominated by prism slip which resulted in sluggish microstructural evolution. This difference in slip activity gave rise to the preferential nucleation of ultrafine grains at prior grain boundaries and thus the development of a bimodal grain structure. The grain refinement was concluded to result primarily from the incompatibility of deformation in neighboring grains.",

author = "G.S. Dyakonov and I.P. Semenova and R.Z. Valiev and S. Mironov and S.L. Semiatin",

year = "2019",

language = "English",

volume = "173",

pages = "174--183",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - EBSD analysis of grain-refinement mechanisms operating during equal-channel angular pressing of commercial-purity titanium.

AU - Dyakonov, G.S.

AU - Semenova, I.P.

AU - Valiev, R.Z.

AU - Mironov, S.

AU - Semiatin, S.L.

PY - 2019

Y1 - 2019

N2 - Electron backscatter diffraction was applied to examine the fundamental mechanisms governing the development of ultrafine-grain microstructures during equal-channel angular pressing of commercial-purity titanium. Texture analysis and examination of misorientation distributions revealed the enhanced activity of non-prismatic slip systems at prior grain boundaries, which promoted the preferential development of deformation-induced boundaries in these areas. By contrast, deformation in the interior of grains was dominated by prism slip which resulted in sluggish microstructural evolution. This difference in slip activity gave rise to the preferential nucleation of ultrafine grains at prior grain boundaries and thus the development of a bimodal grain structure. The grain refinement was concluded to result primarily from the incompatibility of deformation in neighboring grains.

AB - Electron backscatter diffraction was applied to examine the fundamental mechanisms governing the development of ultrafine-grain microstructures during equal-channel angular pressing of commercial-purity titanium. Texture analysis and examination of misorientation distributions revealed the enhanced activity of non-prismatic slip systems at prior grain boundaries, which promoted the preferential development of deformation-induced boundaries in these areas. By contrast, deformation in the interior of grains was dominated by prism slip which resulted in sluggish microstructural evolution. This difference in slip activity gave rise to the preferential nucleation of ultrafine grains at prior grain boundaries and thus the development of a bimodal grain structure. The grain refinement was concluded to result primarily from the incompatibility of deformation in neighboring grains.

M3 - Article

VL - 173

SP - 174

EP - 183

JO - Acta Materialia

JF - Acta Materialia

SN - 1359-6454

ER -

ID: 78385907