Inhibition of cyclic grain boundary migration through cellular precipitation in Pb-5 Pct Sn alloy

Stone, Garvin; Raman, V.

doi:10.1007/bf02645060

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…For the stress tensor we find [2] with the following terms for the Burgers vectors b 1 and b 2 and the dislocation line s in the coordinate system of the stress tensor [3] From Eqs. [2] and [3], the force on the dislocations reads [4] The driving force for GB motion is given by [5] p GB ϭ F dis # r dis ϭ°Ϯ…”

Section: Discussionmentioning

confidence: 99%

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Cyclic deformation of pure aluminum bicrystals

Syed

Winning

2005

Metall Mater Trans A

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The dynamic behavior of Ͻ112Ͼ-tilt grain boundaries in aluminium bicrystals under the influence of cyclic stresses at elevated temperatures is reviewed. Bicrystals, containing low-and high-angle grain boundaries within a wide range of misorientation angles, were deformed at several combinations of stress, temperature, and number of cycles. The grain-boundary (GB) displacement and the deformed structure of bicrystals were framed using standard optical microscopy. The grain orientations were measured using the electron backscatter diffraction (EBSD) technique with a scanning electron microscope (SEM), before and after the deformation. There is distinct evidence of a sharp transition angle between low-and high-angle grain boundaries, with respect to the ability of the boundaries to move under the given parameters. The experimental observations lead to the conclusion that a difference in the dislocation structure in two grains causes the driving force for GB migration.

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Section: Discussionmentioning

confidence: 99%

“…[1][2][3][4][5][6][7] Most of the investigations were carried out to obtain a thorough understanding of the technological importance of the cyclic deformation and fatigue behavior of polycrystalline materials, rather than to analyze the GB motion and microstructure evolution of materials.…”

Section: Introductionmentioning

confidence: 99%