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Published: 01 June 2016
Fig. 5 Twinning planes in titanium. Although most twinning occurs along the (1 1 02) plane, deformation at room temperature also takes place along other planes. More
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Published: 01 June 2016
Fig. 4 Twinning in high-purity titanium. The twins are the needlelike bands in the grains. In some instances, the twins extend entirely across a grain. Etchant: 10% HF, 5% HNO 3 . Original magnification: 250× More
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Published: 01 January 2006
Fig. 2 Principle of twinning More
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Published: 01 January 2002
Fig. 27 Likelihood of twinning and cleavage for the three common lattices (fcc, bcc, and hcp). An increase in strain rate or a decrease in temperature increases the likelihood of twinning. The fcc metals twin only with difficulty and generally do not fracture by cleavage. See text More
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Published: 01 January 2002
Fig. 6 Orientation relationships for {1,1,2} ⟨1,1,−1⟩ twinning in the bcc lattice. It is assumed that a crack is propagating on the (0,0,1) cleavage plane and then on the (1,1,−2) K 1 plane in the [111] direction. (The required shear direction for simple shear twinning on the (1,1,−2) plane More
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Published: 01 January 2005
Fig. 6 Representation of mechanical twinning in a hexagonal close-packed metal. The diagonal planes are twinning planes. In the formation of a twin, each atom moves a short distance with respect to its neighbor. More
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Published: 01 January 2005
Fig. 7 Schematic comparison of crystal deformation by (a) slip and by (b) twinning More
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Published: 01 January 2005
Fig. 8 Twinning in body-centered cubic lattice resulting from shear parallel to (112) planes in the [ 1 ¯ 1 ¯ 1] direction. Source: Ref 6 More
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Published: 01 January 2000
Fig. 19 Schematic of twinning as it occurs in an fcc lattice. Source: Ref 11 More
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Published: 31 August 2017
Fig. 17 Scanning electron micrographs of defects in graphite. (a) Twinning of plates. (b) Twist boundaries. Source: Ref 73 More
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Published: 01 December 2004
Fig. 38 Four twinning elements: K 1 and K 2 planes, η 1 and η 2 directions, which are all contained in P, the shear plane. Source: Ref 41 . Reprinted with permission More
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Published: 01 December 2004
Fig. 5 Extensive mechanical twinning was observed in high-purity, electron-beam-melted zirconium after hot working and cold drawing. Viewed in polarized light. Magnification bar is 100 μm long. More
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Published: 15 January 2021
Fig. 28 Likelihood of twinning and cleavage for the three common lattices: face-centered cubic (fcc), body-centered cubic (bcc), and hexagonal close-packed (hcp). An increase in strain rate or a decrease in temperature increases the likelihood of twinning. The fcc metals twin only More
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Published: 15 January 2021
Fig. 6 Orientation relationships for {1,1,2} 〈1,1,−1〉 twinning in the body-centered cubic lattice. It is assumed that a crack is propagating on the (0,0,1) cleavage plane and then on the (1,1,−2) K 1 plane in the [111] direction. (The required shear direction for simple shear twinning More
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Published: 01 January 1986
Fig. 70 Centered dark-field micrograph of deformation twins imaged with 1 1 1 twin reflection. Thin foil TEM specimen More
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Published: 01 January 1986
Fig. 22 Bright-field and dark-field images of an annealing (growth) twin in rutile. (a) Bright-field image of twinned grain (arrow) in strong contrast. (b) Diffraction pattern of twinned grain showing [111] zone twinned on ( 1 01). (c) Dark-field image of matrix spot a (see Fig. 22b ). (d More
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Published: 15 May 2022
Fig. 4 Screw types. (a) Single screw. (b) Nonintermeshing twin screw. (c) Intermeshing twin screw. (d) Conical twin screw More
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Published: 01 January 1994
Fig. 20 Twin tank system for electroless nickel plating. Tanks are used alternately. While one tank is being used to plate, the second is being passivated. Cylindrical tank is used to store 30% nitric acid for passivation. More
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Published: 09 June 2014
Fig. 8 Twin pinch roll drive system More
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Published: 09 June 2014
Fig. 9 Twin tractor drive system More