Dislocations and mechanical properties

Seeger, A., Dislocations and Mechanical Properties of Crystals, p. 243. Wiley, New York, 1957. 

Figure 12.9a Reprinted from Dash W.C. (1957) The observation of dislocations in silicon, in Dislocations and Mechanical Properties of Crystals, Eds Fisher, J.C., Johnston, W.G., Thomson, R. and Vreeland, T. Wiley, New York, pp. 57-68.

Orowan, E. (1954) Dislocations and mechanical properties, in Dislocations in Metals, edited by M. Cohen, New York AIME-Institute of Metals. 

Amelinckx S (1957) Dislocations and mechanical properties of crystals. John Wiley Sons Inc, New York... 

Changes in electrical resistivity (V3) and mechanical properties (V3, V4) of graphite fibers upon nitration have been studied. Increases in elastic modulus, and decreases in tensile strengths, have been related to removal of boundary dislocations by the intercalation process proposed elsewhere iN4). 

All the foregoing discussion of crystalline solids has dealt with their perfect or ideal structures. Such perfect structures are seldom if ever found in real substances and, while low levels of imperfections have only small effects2 on their chemistry, the physical (i.e., electrical, magnetic, optical and mechanical) properties of many substances are often crucially affected by their imperfections. It is, therefore, appropriate to devote a few paragraphs to describing the main types of imperfection, or defect, in real crystalline solids. We shall not, however, discuss the purely mechanical imperfections such as mosaic structure, stacking faults, and dislocations, all of which are some sort of mismatch between lattice layers. 

Wang M, Yue CY, Chua B (2001) Production and evaluation of hydroxylapatite reinforced polysnUbne for tissue replacement. J Mater Sci Mater in Med 12 821-826 Wang PE, Chaki TK (1993) Sintering behaviour and mechanical properties of hydroxy lapatite and dicalcium phosphate. J Mater Sci Mater in Med 4 150-158 Watanabe S, Nakamura T, Shimizu Y, Hitomi S, Ikada Y (1989) Traumatic sternal segment dislocation in a child. Chest. 96 684-686... 

E. M. Nadgornyi Dislocation dynamics and mechanical properties of crystals, volume 31 of Progress in materials science. Pergamon Press, Oxford, 1988. 

Investigations into the relationship between structure and mechanical properties in poiydiacetylenes has enabled considerable new insight to be obtained concerning structure/property relationships for polymers in general. Electron microscope studies have allowed defects such as dislocations and stacking faults to be studied in detail for the first time. Because of their highly-perfect structure... 

Mun] Munroe, P.R., Baker, I, Dislocations in Fe-45 at.% Al+B after High-Temperature Deformation , Philos. Mag. A (Physics of Condensed Matter, Defects and Mechanical Properties), 72(5), 1301-1310 (1995) (Experimental Meehan. Prop., Crys. Stmeture, 26)... 

---