Dislocation Structure Near the Intergranular Fracture Surface of Cyclically Strained Polycrystalline Copper

Jaroslav Polák; Ladislav Poczklán; Tomáš Vražina

doi:10.1111/ffe.14663

journal article Apr 23, 2025

Dislocation Structure Near the Intergranular Fracture Surface of Cyclically Strained Polycrystalline Copper

Jaroslav Polák

Ladislav Poczklán Tomáš Vražina

Fatigue & Fracture of Engineering Materials & Structures Vol. 48 No. 7 pp. 3110-3121 · Wiley

View at Publisher Save 10.1111/ffe.14663

Abstract

ABSTRACTPolycrystalline copper specimens were cycled with strain amplitudes, resulting in fatigue lives ranging from 105 to 107 cycles. The fracture surfaces were inspected in the SEM, and intergranular facets with surface relief were studied. FIB sections were produced, and lamellae for the TEM were prepared using FIB sectioning. Individual persistent slip markings on the facets, consisting of distinctive extrusions and intrusions, were inclined at an angle to the surface corresponding to the trace of the primary slip plane. Dislocation structures close to the surface of the facets were observed and analyzed. The dislocation structure consisted of randomly distributed dislocations and some dislocation sub‐boundaries. Contrary to the dislocation structure below the specimen surface, no specific dislocation structures corresponding to the persistent slip bands were found. The absence of localized cyclic strain‐induced dislocation patterns was discussed and attributed to the complex stress and strain history within the cyclic plastic zone of the propagating crack, where multiple slip systems were active.

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References

33

[1]

Hirsch P. B. "An Electron Microscope Study of Stainless Steel Deformed in Fatigue and Simple Tension" Philosophical Magazine: A Journal of Theoretical Experimental and Applied Physics (1959) 10.1080/14786435908243268

[2]

10.1080/00318086.1961.11643279

[3]

10.1080/14786436408225391

[4]

10.1002/pssb.19660150105

[5]

10.1016/0001-6160(67)90138-1

[6]

10.1002/pssb.19680270212

[7]

Polák J. (1991)

[8]

Klesnil M. (1992)

[9]

10.1017/cbo9780511806575

[10]

10.1016/b978-0-12-822944-6.00077-3

[11]

10.1007/bf02646881

[12]

10.1080/14786436908228045

[13]

10.1007/bf02649636

[14]

10.1007/bf02644144

[15]

10.1080/01418617808239239

[16]

10.1179/030634580790426094

[17]

10.1016/0025-5416(84)90216-7

[18]

10.1111/j.1460-2695.1995.tb00909.x

[19]

10.1016/j.ijfatigue.2023.108063

[20]

10.1361/154770206x156231

[21]

10.1111/j.1460-2695.2010.01484.x

[22]

10.1146/annurev-matsci-080222-101859

[23]

10.1108/eb033233

[24]

10.1007/bf00185199

[25]

10.1016/0001-6160(74)90071-6

[26]

10.1111/ffe.14276

[27]

10.1111/ffe.14493

[28]

10.1016/j.ijfatigue.2022.106721

[29]

10.1016/j.msea.2022.143357

[30]

10.1016/j.ijfatigue.2024.108190

[31]

10.1002/adem.202400313

[32]

10.1111/ffe.12567

[33]

10.1007/s11661-016-3374-1

Metrics

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Citations

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References

Details

Published: Apr 23, 2025
Vol/Issue: 48(7)
Pages: 3110-3121
License: View

Authors

J

Jaroslav Polák

Institute of Physics of Materials Czech Academy of Sciences Brno Czechia

L

Ladislav Poczklán

Institute of Physics of Materials Czech Academy of Sciences Brno Czechia

T

Tomáš Vražina

Institute of Physics of Materials Czech Academy of Sciences Brno Czechia

Funding

Ministerstvo Školství, Mládeže a Tělovýchovy Award: LM2015069

Akademie ved Ceské Republiky Award: RVO 6808173

Cite This Article

Jaroslav Polák, Ladislav Poczklán, Tomáš Vražina (2025). Dislocation Structure Near the Intergranular Fracture Surface of Cyclically Strained Polycrystalline Copper. Fatigue & Fracture of Engineering Materials & Structures, 48(7), 3110-3121. https://doi.org/10.1111/ffe.14663

Dislocation Structure Near the Intergranular Fracture Surface of Cyclically Strained Polycrystalline Copper

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