Direct measurements of stacking-fault energies from observations of dislocation nodes

Howie, A.; Swann, P. R.

doi:10.1080/14786436108243372

Cited by 339 publications

(60 citation statements)

References 17 publications

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“…In the literature, Ag-Al (7.5 at%) [25], Ag-In (11.5 at%) [26], and Ag-Sn (7.8 at%) [27], concentrated solid solution alloys with similar concentrations were studied under TEM in order to conduct the direct measurement for the stacking fault energy of those alloys from the observations of extended dislocations nodes in the micrographs. To the best knowledge of the authors, there is no direct TEM study reports on Ag-Ga solid solution alloy in the literature.…”

Section: Transmission Electron Microscopy Resultsmentioning

confidence: 99%

“…intrinsic stacking fault energy of pure Ag, γ Ag , is 21.9 erg/cm 2 , and the values of intrinsic stacking fault energy of solid solution alloys in Ag-Al [25], Ag-In [26] and Ag-Sn [27] systems were plotted as a function of solute concentration in Fig. 11 (a), using the values given in the literatures, as determined by the direct TEM measurements.…”

Section: Solid Solution Softeningmentioning

confidence: 99%

“…The 11. (a) The variation of the intrinsic stacking fault energy with solute elements concentration in Ag-Al, Ag-In and Ag-Sn systems, using TEM extended nodes observation determined values [25][26][27], (b) the variation of the stacking fault density with solute elements concentration in Ag-Al, Ag-Ga, Ag-In and AgSn systems, determined by XRD measurements [37], (c) the variation of the normalized intrinsic stacking fault energy with solute elements concentration in Ag-Al, Ag-Ga, Ag-In and Ag-Sn systems.…”

Section: Solid Solution Softeningmentioning

confidence: 99%

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Solid solution softening and enhanced ductility in concentrated FCC silver solid solution alloys

Huo

Lee

2018

Materials Science and Engineering: A

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Section: Transmission Electron Microscopy Resultsmentioning

confidence: 99%

Section: Solid Solution Softeningmentioning

confidence: 99%

Section: Solid Solution Softeningmentioning

confidence: 99%

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Solid solution softening and enhanced ductility in concentrated FCC silver solid solution alloys

Huo

Lee

2018

Materials Science and Engineering: A

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“…The γ sf of the metals and alloys treated here, estimated from the literature, are 15 mJ/m 2 for α-brass [17], 31±8 mJ/m 2 for AISI 304Cu [15], 78 mJ/m 2 for pure copper [16], and 166 mJ/m 2 for pure aluminum [16]. On this bases, and neglecting the influence of alloying elements in the case of the aluminum alloy, the relationship by Firrao et al [1] yields a τ c,tw value of 33 MPa for α-brass, 69…”

Section: Discussionmentioning

confidence: 99%

Recent Developments on the Microstructural Effects Caused by Small-Charge Explosions in FCC Alloys

Firrao

Matteis

Pozzi

2010

MSF

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Abstract. Metals exposed to small charge explosions, even in absence of overall deformation, show characteristic and permanent microstructural features, that can be related to blast wave properties, e.g. to the charge mass and the charge-to-target distance. In particular, Face Centered Cubic (FCC) alloys with low stacking fault energy may exhibit mechanical twinning due to the high strain rate caused by an explosion, even if in slower processes they mainly deform by slip. In some forensic science investigations, these crystallographic modifications, and particularly the occurrence of twinning, may be among the few remaining clues of a small charge explosion, and may be useful to hypothesize the nature and location of the charge. A wide experimental campaign was performed to correlate the blast wave properties with the ensuing modifications of FCC metal targets, and to investigate the microscopic deformation mechanisms leading to these modifications. In particular, it was attempted to identify the threshold conditions (charge-to-target distance, charge mass, and hence applied stress) that yield barely detectable microstructural modifications, and to study the transition from slip to twinning. FCC metal alloys, with low (α-brass, stainless steel), intermediate (copper, gold alloy), or high (aluminum alloy) stacking fault energy, were exposed to blast waves (caused by 50 or 100 g plastic explosive charges located at increasing charge-to-target distances) and then analyzed by X-ray diffraction, optical microscopy, scanning electron microscopy, and electron backscattered diffraction imaging. A comprehensive review of the most significant findings of the whole research, together with theoretical considerations on the slip and twinning deformation mechanisms, is here presented.

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“…Adler and Wagner (1962) using x-rays examined a number of silver alloy series including that investigated in the present york, and o'tainéd the faulting probability as a function of solute. Vassamillet and Massalski (1963) investigate several series using x-ray scattering and placed their results on an abEolute scale by fitting their :points at high solute content to those of Howie and Swann (1961). The latter workers examined extended nodes in copper and silver alloys, and nickel cobalt, and linearly extrapolated their results at low solute content in order to estimate the stacking fault energy of the pure metals.…”

Section: Ii\itrodijctionmentioning

confidence: 99%

The stacking-fault energy in the Ag-In series

Gallagher

Washburn

1966

Philosophical Magazine

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Direct measurements of stacking-fault energies from observations of dislocation nodes

Cited by 339 publications

References 17 publications

Solid solution softening and enhanced ductility in concentrated FCC silver solid solution alloys

Solid solution softening and enhanced ductility in concentrated FCC silver solid solution alloys

Recent Developments on the Microstructural Effects Caused by Small-Charge Explosions in FCC Alloys

The stacking-fault energy in the Ag-In series

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