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The Philosophical Magazine: A Journal of Theoretical Experimental and Applied Physics
Series 8
Volume 22, 1970 - Issue 179
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Original Articles

Electron diffraction contrast from ledges at the interfaces of faceted θ′ precipitates

G. C. Weatherly Metallurgy and Ceramics Research Laboratory, Aerospace Research Laboratories, Wright-Patterson AFB, Ohio; Department of Metallurgy, University of Toronto, Toronto, Canada
&
C. M. Sargent Metallurgy and Ceramics Research Laboratory, Aerospace Research Laboratories, Wright-Patterson AFB, Ohio
Pages 1049-1061 | Received 30 Jun 1970, Published online: 20 Aug 2006

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Sirous Asgari, Reza Sharghi-Moshtaghin, Mehdi SadeghAhmadi & Pirouz Pirouz. (2013) On phase transformations in a Ni-based superalloy. Philosophical Magazine 93:10-12, pages 1351-1370.
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G. R. Purdy & J. P. Hirth. (2006) Transformation defects on θ′ precipitates in Al–Cu alloys. Philosophical Magazine Letters 86:3, pages 147-154.
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A.C. Daykin & C.J. Kiely. (1993) Direct observation of 1/2<110> dislocations occurring at steps in thin film type-B CoSi2//Si(111) interfaces. Philosophical Magazine A 68:6, pages 1345-1358.
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BimalK. Kad & HamishL. Fraser. (1993) Observations of [100] dislocations in 1/2[112] reacted dislocation networks in lamellar TiAl subboundaries. Philosophical Magazine Letters 68:1, pages 21-28.
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C.P. Luo & G.C. Weatherly. (1988) The interphase boundary structure of precipitates in a Ni-Cr alloy. Philosophical Magazine A 58:3, pages 445-462.
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J.M. Howe, U. Dahmen & R. Gronsky. (1987) Atomic mechanisms of precipitate plate growth. Philosophical Magazine A 56:1, pages 31-61.
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Y. R. Shiue & D. S. Phillips. (1984) The crystallography of annealing twins in alumina ceramics. Philosophical Magazine A 50:5, pages 677-702.
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H.I. Aaronson, T. Furuhara, M.G. Hall, J.P. Hirth, J.F. Nie, G.R. Purdy & W.T. ReynoldsJr.Jr.. (2006) On the mechanism of formation of diffusional plate-shaped transformation products. Acta Materialia 54:5, pages 1227-1232.
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Gary R. Purdy. (2006) Edge-to-edge plane matching as a criterion for interphase boundaries of low energy. Metallurgical and Materials Transactions A 37:3, pages 857-863.
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Tamer El‐Raghy & Michel W. Barsoum. (2004) Processing and Mechanical Properties of Ti 3 SiC 2 : I, Reaction Path and Microstructure Evolution . Journal of the American Ceramic Society 82:10, pages 2849-2854.
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K.R. Kinsman & H.I. Aaronson. (1997) Structure of Crystalline Interfaces 1 1Editor's Note. This article is an important paper taken from the 1971 Symposium Program of the International Metallographic Society. Furthermore, this paper is judged as an outstanding contribution to the field of metallography and, for this reason, it is presented at this time in its original unabridged form.. Materials Characterization 39:2-5, pages 209-233.
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R.D. DOHERTY. 1996. Physical Metallurgy. Physical Metallurgy 1363 1505 .
Y. Atici & D. Cherns. (1995) Transmission electron microscope study of surface steps on SiGe/Si(001) superlattices produced by differential etching. Journal of Crystal Growth 154:3-4, pages 262-268.
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G. Spanos, R.A. Masumura, R.A. Vandermeer & M. Enomoto. (1994) The evolution and growth kinetics of precipitate plates growing by the ledge mechanism. Acta Metallurgica et Materialia 42:12, pages 4165-4176.
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Gary R. Purdy & Wenzheng Zhang. (1994) On the role of interphase-boundary structure in plate growth by diffusional mechanisms. Metallurgical and Materials Transactions A 25:9, pages 1875-1883.
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H. I. Aaronson & M. G. Hall. (1994) A history of the controversy over the roles of shear and diffusion in plate formation aboveM d and a comparison of the atomic mechanisms of these processes. Metallurgical and Materials Transactions A 25:9, pages 1797-1819.
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T. Furuhara, J.M. Howe & H.I. Aaronson. (1991) Interphase boundary structures of intragranular proeutectoid α plates in a hypoeutectoid TiCr alloy. Acta Metallurgica et Materialia 39:11, pages 2873-2886.
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D.D. Perovic & G.C. Weatherly. (1991) Plan-view diffraction contrast imaging of surface-relaxation effects from strained-layer superlattices. Ultramicroscopy 35:3-4, pages 271-276.
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L. M. Brown, J. R. Dryden, V. Perovic & G. R. Purdy. (1991) On the role of elastic interactions in the nucleation and growth of ledges. Metallurgical Transactions A 22:6, pages 1159-1164.
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H. I. Aaronson, T. Furuhara, J. M. Rigsbee, W. T. Reynolds & J. M. Howe. (1990) Crystallographic and mechanistic aspects of growth by shear and by diffusional processes. Metallurgical Transactions A 21:9, pages 2369-2409.
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R.M. AikinJr.Jr. & M.R. Plichta. (1990) Concurrent size and shape coarsening of γ′ in AlAg. Acta Metallurgica et Materialia 38:1, pages 77-93.
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D.E. Stephens, Y.J.M. Brechet & G.R. Purdy. (1988) On the mechanisms of growth of faceted precipitates. Scripta Metallurgica 22:12, pages 1897-1902.
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G. Spanos & H.I. Aaronson. (1988) Morphology, crystallography and mechanism of sympathetic nucleation of proeutectoid cementite plates. Scripta Metallurgica 22:9, pages 1537-1542.
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H.I. Aaronson, D. Eylon & F.H. Froes. (1987) Observations of superledges formed on sideplates during precipitation of α from β Ti-6% Al-4% V. Scripta Metallurgica 21:9, pages 1241-1245.
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O.T. Woo, G.C. Weatherly, C.E. Coleman & R.W. Gilbert. (1985) The precipitation of γ-deuterides (hydrides) in titanium. Acta Metallurgica 33:10, pages 1897-1906.
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S. K. Liu, W. T. Reynolds, H. I. Aaronson, H. Hu & G. J. Shiflet. (1985) Discussion of “the bainite transformation in a silicon steel. Metallurgical Transactions A 16:3, pages 457-466.
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R. C. Pond. (2011) Review of the principal contrast effects observed at interphase boundaries using transmission electron microscopy. Journal of Microscopy 135:3, pages 213-240.
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T.G. Zocco & M.R. Plichta. (1984) Comparison of solute fluxes during concurrent size and shape coarsening of plate shaped precipitates. Scripta Metallurgica 18:6, pages 555-560.
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Y Bouazra & F Reynaud. (1984) Determination of the heights of ledges on θ′ plates in A1–4 wt% Cu by convergent beam electron diffraction and lattice plane imaging. Acta Metallurgica 32:4, pages 529-534.
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U. Dahmen & K. H. Westmacott. (1983) Ledge structure and the mechanism of θ′ precipitate growth in AlCu. Physica Status Solidi (a) 80:1, pages 249-262.
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V. Perovic & G.R. Purdy. (1983) The elastic interaction of growth ledges on plate-shaped precipitates. Scripta Metallurgica 17:11, pages 1305-1309.
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A.M. Sriramamurty, D. Banerjee & S.N. Tewari. (1982) Interfacial structure in ds γ/γ'-α eutectic superalloy. Acta Metallurgica 30:6, pages 1231-1242.
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L.S. Palatnik & A.I. Fedorenko. (1981) Formation of dislocation superlattices in epitaxial systems. Journal of Crystal Growth 52, pages 917-924.
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S. M. Bruemmer, C. P. Fluhr, D. V. Beggs, C. A. Wert & H. L. Fraser. (1980) An analytical electron microscopy study of the high temperature carbide formed in a V-5 Ti-C alloy. Metallurgical Transactions A 11:5, pages 693-699.
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J. W. Matthews. (2020) Misfit Dislocations. Proceedings, annual meeting, Electron Microscopy Society of America 35, pages 120-123.
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H.C. Jamieson, G.C. Weatherly & F.D. Manchester. (1976) The β → α phase transformation in palladium-hydrogen alloys. Journal of the Less Common Metals 50:1, pages 85-102.
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J.W. Matthews & A.E. Blakeslee. (1976) Defects in epitaxial multilayers. Journal of Crystal Growth 32:2, pages 265-273.
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J. P. Simon & P. Guyot. (1975) Heterogeneous precipitation on a low-angle grain boundary in AI-4 wt % Cu. Journal of Materials Science 10:11, pages 1947-1950.
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J. W. EdingtonJ. W. Edington. 1975. Interpretation of Transmission Electron Micrographs. Interpretation of Transmission Electron Micrographs 1 112 .
H. I. Aaronson. (1974) Observations on interphase boundary structure. Journal of Microscopy 102:3, pages 275-300.
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K.R. Kinsman & H.I. Aaronson. (1974) Structure of crystalline interfaces. Metallography 7:5, pages 361-396.
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R Sankaran & C Laird. (1974) Kinetics of growth of platelike precipitates. Acta Metallurgica 22:8, pages 957-969.
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P. Guyot & M. Wintenberger. (1974) Repeated θ′ precipitation at dislocations in Al-4 wt% Cu. Journal of Materials Science 9:4, pages 614-618.
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P. Guyot. (1973) Observations of lattice defects using the weak-beam technique. Journal of Microscopy 98:2, pages 180-190.
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G.C. Weatherly & T.D. Mok. (1972) Electron diffraction contrast from the strain fields of epitaxial dislocations and steps at interphase interfaces. Surface Science 31, pages 355-367.
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J. K. Tien, P. G. Shewmon & J. S. Foster. (1971) The migrational characteristics of the cusp-oriented α/κ interface in the Cu-Si system. Metallurgical Transactions 2:4, pages 1193-1202.
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