Voids in quenched copper, silver and gold

Clarebrough, L. M.; Humble, P.; Loretto, M. H.

doi:10.1016/0001-6160(67)90265-9

Cited by 54 publications

(15 citation statements)

References 14 publications

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“…7b). This faceted shape is not similar to the truncated octahedron found in quenching experiments [33], but can be understood in terms of kinetic effects (dislocation glide) supported by 2-D discrete dislocation simulations showing the polygonization of initially round voids [34]. Due to the elevated deformation temperatures (T ffi 0.5T M ), however, the influence of surface diffusion cannot be excluded.…”

Section: Void Growth Due To Viscous Dislocation Motionmentioning

confidence: 80%

Void growth in copper during high-temperature power-law creep

et al. 2011

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Section: Void Growth Due To Viscous Dislocation Motionmentioning

confidence: 80%

Void growth in copper during high-temperature power-law creep

et al. 2011

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“…Previous work has shown that in copper quenched from an atmosphere of hydrogen into silicone oil prismatic dislocations are generated by hydrogen pressure in voids formed by vacancy clustering [2]. It is likely that the same mechanism operates in the copper-aluminium alloy, the hydrogen in this case coming from the decomposition of water vapour.…”

Section: Methodsmentioning

confidence: 96%

Interaction of Prismatic Dislocations and Intrinsic Faults

Clarebrough

1970

Physica Status Solidi (b)

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Prismatic loops punched from voids in a quenched Cu+9.4 atyo Al alloy interact with intrinsic Frank loops to give stable unfaulted regions in the Frank loops bounded by Shockley partials. Two reactions involving dissociation of dislocations with b = 1/2 (110) are identified as nucleating the unfaulted regions. The stability of the unfaulted regions may be attributed to segregation of aluminium to the stacking fault or interaction between a Shockley partial and small defects.Prismatische Schleifen, die von Hohlriiumen in einer getemperten Cu+9,4 atyo A L Lgierung hervorgerufen werden, wechselwirken mit Eigen-Frankschleifen und ergeben stabile fehlerfreie Bereiche in den Frankschleifen, die von Shockley-Teilversetzungen begrenzt werden. Zwei Reaktionen, die Dissoziation von Versetzungen mit b = 1/2 (1 10) einschliehn, werden identifiziert und fiir die Erzeugung der fehlerfreien Bereiche verantwortlich gemacht. Die Stabilitiit der fehlerfreien Bereiche kann der Abscheidung von Aluminium auf Stapelfehlern oder der Wechselwirkung zwischen Shockley-Teilversetzungen und kleinen Defekten zugeschrieben werden.

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“…The value of the extinction distance under many beam conditions is obtained by computation [212]. The related problem of determining the shapes of voids in single crystals of metals has been solved [213] by tilting the crystal into several specific orientations and observing the shape of the cavity and the nature of the thickness fringes. This enabled all faces to be indexed crystallographically.…”

Section: Thicknessmentioning

confidence: 99%

The Electron Microscopy of Catalysts

Sanders¹

1985

Catalysis

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Voids in quenched copper, silver and gold

Cited by 54 publications

References 14 publications

Void growth in copper during high-temperature power-law creep

Void growth in copper during high-temperature power-law creep

Interaction of Prismatic Dislocations and Intrinsic Faults

The Electron Microscopy of Catalysts

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