Plastic Deformation of Aluminum Oxide by Indentation and Abrasion
作者： BERNARD J. HOCKEY
DOI: 10.1111/J.1151-2916.1971.TB12277.X
关键词: Brittleness 、 Materials science 、 Diamond 、 Indentation 、 Abrasive 、 Indentation hardness 、 Residual stress 、 Slip (materials science) 、 Crystal twinning 、 Metallurgy
摘要: Transmission electron microscopy provided direct evidence that plastic deformation occurs during the room-temperature indentation and abrasion of Al2O3. Examination single-crystal polycrystalline specimens showed high densities dislocations are produced within near-surface regions by mechanical polishing with a fine diamond compound (0.25 μm) both slip twinning placement Vickers microhardness indentations. The occurrence in this normally brittle material is considered to be consequence nature magnitude local stresses developed under pointed indenters irregularly shaped abrasive particles. Preliminary results on effect annealing retained substructure also presented. Annealing at 900°C higher resulted reduction residual through motion their rearrangement into lower-energy configurations.
sci-hub.se 参考文章(18)
R. J. Charles, R. R. Shaw, Delayed Failure of Polycrystalline and Single Crystal Alumina Defense Technical Information Center. ,(1962) , 10.21236/AD0782277
E. J. Duwell, H. C. Butzke, Microscopical Observations of Wear Surfaces on Sapphire Journal of Applied Physics. ,vol. 35, pp. 3385- 3390 ,(1964) , 10.1063/1.1713226
M.L Kronberg, Plastic deformation of single crystals of sapphire: Basal slip and twinning Acta Metallurgica. ,vol. 5, pp. 507- 524 ,(1957) , 10.1016/0001-6160(57)90090-1
R. P. Steijn, On the Wear of Sapphire Journal of Applied Physics. ,vol. 32, pp. 1951- 1958 ,(1961) , 10.1063/1.1728269
C.H. Riesz, H.S. Weber, Friction and wear of sapphire Wear. ,vol. 7, pp. 67- 81 ,(1964) , 10.1016/0043-1648(64)90079-1
N. J. Tighe, Jet Thinning Device for Preparation of Al2O3 Electron Microscope Specimens Review of Scientific Instruments. ,vol. 35, pp. 520- 521 ,(1964) , 10.1063/1.1718866
D. J. Barber, Nancy J. Tighe, Electron microscopy and diffraction of synthetic corundum crystals I. Pure aluminium oxide grown by the verneuil process Philosophical Magazine. ,vol. 11, pp. 495- 512 ,(1965) , 10.1080/14786436508224237
P. D. Bayer, R. E. Cooper, A new slip system in sapphire Journal of Materials Science. ,vol. 2, pp. 301- 302 ,(1967) , 10.1007/BF00555392
H. P. Kirchner, R. M. Gruver, R. E. Walker, Strengthening Sapphire by Compressive Surface Layers Journal of Applied Physics. ,vol. 40, pp. 3445- 3452 ,(1969) , 10.1063/1.1658217
A. H. Heuer, Deformation twinning in corundum Philosophical Magazine. ,vol. 13, pp. 379- 393 ,(1966) , 10.1080/14786436608212616