Global City-Twinning in the Digital Age
... twinning exhibits the singularity of its practices through its Twinning Promotion Program and the Europe for Citizens Programme . Its heavy - handed practice of monitoring the three forms of control it exerts on the making and ...
Investigation of the Relationship of Twinning to Brittle Fracture of Refractory Metals
... Twinning The ultimate extent to which twinning may contribute to the strain of a specimen occurs in the case where a crystal of optimum orientation is totally ... Twinning The Morphology of Twins The Shear Stress for Twinning.
Mechanical Twinning of Crystals
... twinning and also for an inhomogeneous distribution of residual stresses ( irrational twinning , kinking , and so on ) . Mechanical twinning in the narrow sense ( regular , symmetrical lattice reorientation in response to me- chanical ...
The Mineralogical Magazine and Journal of the Mineralogical Society
... twinning ( a ) and ( c ) , or both axes of reflection - twinning ( 6 ) and ( d ) , but not axes of both kinds of twinning . We shall see later that if only the plane of symmetry remained , one of the twin - axes would be an axis of ...
The Mechanical Engineer
... TWINNING . The question of metallic crystal twinning is one which is extremely interesting from a theoretical standpoint , and its cause and general physical interpretation have given rise to a considerable amount of scientific research ...
Ji xie gong cheng shi
... TWINNING , The question of metallic crystal twinning is one which is extremely interesting from a theoretical standpoint , and its cause and general physical interpretation have given rise to a considerable amount of scientific research ...
A Text Book of Mineralogy
... twinning axis is sometimes one of the oblique crystallographic axes , and then the plane of twinning normal to it is obviously not necessarily a crystallographic plane , this is conspicuous in albite . In these cases the composition ...
Transactions of the American Institute of Mining and Metallurgical Engineers
... twinning , that is to say , twinning that had taken place during the process of crystallization from the liquid state ; but subsequent investigators , particularly Osmond and Cartaud , have concluded that they are mechanical twins ...
The Quarterly Journal of the Geological Society of London
... twinning was regarded by petrographers as an essential characteristic of the plagioclase felspars , and when untwinned or simply - twinned felspar - crystals were met with , even in the most basic rocks , they were referred to ortho ...
Supplementary Report and Scheme of Work for the Year 1919-1920
... twinning structure suggests that twinning is most easily accomplished by small rotations of elements in a plane perpendicular to the twinning plane and containing the line of greatest slope of the twinning plane . It follows that slip ...
Report for the Year ...
... twinning structure suggests that twinning is most easily accomplished by small rotations of elements in a plane perpendicular to the twinning plane and containing the line of greatest slope of the twinning plane . It follows that slip ...
Elementary Crystallography
... twinning every line of symmetry is an axis of reflection - twinning . There are twins of eulytine , diamond , and tetrahedrite , which can be described as twins by reflection on the cube faces . The crystallographic axes are ...
Iron and Steel (a Pocket Encyclopedia)
... twinning plane ( see above ) is symmetrical to the two portions of the twin , but is not a plane of symmetry for either alone . It may be consid- ered that twinning has occurred by rotation of one portion 180 degrees about a line normal ...
The Hardening of Metals
... twinning was shown by the appearance of a dark band in a crystal parallel to a lighter portion , or vice versa . Under strain twinning was indicated by an abrupt change in the direction of the slip bands . " By changing the position of ...
The Properties of Silica
... twinning Dauphiné twinning in natural quartz , taken by itself , does not have decisive weight as evidence of the temperature of formation . It may have resulted from the inversion , or it may have resulted from growth at low ...
Transactions
... twinning was shown by the appearance of a dark band in a crystal parallel to a lighter portion , or vice versa . Under strain twinning was indicated by an abrupt change in the direction of the slip bands . " By changing the position of ...
The Journal of the Iron and Steel Institute
... twinning was shown by the appearance of a dark band in a crystal parallel to a lighter portion , or vice versa . Under strain twinning was indicated by an abrupt change in the direction of the slip bands . " By changing the position of ...
Transactions of the American Institute of Mining and Metallurgical Engineers (Incorporated).
... twinning after deformation , E28 , 446 twinning , plane and axis , E28 , 19 , 445 ; 76 , 566 Crystals , bismuth : lattice form , E28 , 19 ; 76 , 566 twinning - plane and axis , E28 , 19 ; 76 , 566 Crystals , brass , twinning , E28 ...
The Metallography of Steel and Cast Iron
... twinning . 554. Congenital Twinning . -Twinning might well be supposed to occur congenitally in a large proportion of cases , that is , during the actual passage from the molten to ... Twinning Mechanical Twinning Annealing Twinning.