Temperature Dependence of Hardness and Dislocation Distribution Pattern Formed by Indentation in Germanium Crystals
スポンサーリンク
概要
- 論文の詳細を見る
Deformation of germanium crystals by indentation is investigated as a function of temperature. At temperatures below 300℃ the hardness is found insensitive to temperature, and no arrangement of dislocation etch pits is observed around each indentation showing the absence of dislocation motion in the crystals. The plastic deformation due to the dislocation motion occurs above 300℃, and the hardness decreases rapidly as temperature increases between 300℃ and 600℃. Rosette patterns of dislocation etch pits are observed around indentations in this temperature range. The spread of the rosette pattern increases with temperature showing a good correspondence to the behavior of the hardness. A tentative attempt is made for the estimation of the activation energy of dislocation motion in this temperature range. At temperatures above 600℃ the hardness is again insensitive to temperature, and dislocation etch pits distribute at random around each indentation. Rosette patterns develop around indentations formed at low temperature by annealing the specimens at temperatures between 300℃ and 600℃ though they are completely absent before the annealing.
- 東北大学の論文
著者
-
Sumino Koji
The Research Institute For Iron Steel And Other Metals
-
HASEGAWA Hideo
The Research Institute for Iron, Steel and Other Metals
-
Hasegawa Hideo
The Research Institute For Iron Steel And Other Metals
関連論文
- Nitrogen-Oxygen Complexes as Shallow Donors in Silicon Crystals
- Effect of Uniaxial Stress on the Photoluminescence from Plastically Deformed Silicon
- Radiative Recombination on Dislocations in Silicon Crystals
- Deep Defect Levels in Plastically Deformed GaAs
- Plastic Deformation of Foil Copper Crystals. II : Electron Microscopical Study
- Plastic Deformation of Foil Copper Crystals. I : Study of Work-Hardening Behavior
- Work-hardening of Foil Crystals of Copper
- Distribution Patterns of Strain and Dislocations Around Indented Areas in Germanium Crystals as Observed by X-Ray Topography
- Microdynamics of Dislocations in Plastic Deformation of Germanium Crystals
- Temperature Dependence of Hardness and Dislocation Distribution Pattern Formed by Indentation in Germanium Crystals
- Strain-Rate and Temperature Dependence of Mechanical Behaviour in Germanium Crystals
- Distribution of Dislocations in Germanium Single Crystals during Plastic Deformation
- The Origin of the Difference in the Mechanical Strengths of Czochralski-Grown Silicon and Float-Zone-Grown Silicon
- Acceptors in n-Type Silicon Crystals Induced by Plastic Deformation
- Difference in the Mechanical Strengths of Dislocation-Free Crystals of Czochralski Silicon and Float-Zone Silicon
- Mechanical Behavior of Czochralski-Silicon Crystals as Affected by Precipitation and Dissolution of Oxygen Atoms
- Oxygen Donors Developed around Dislocations in Silicon
- Mechanical Strength of Oxygen-doped Float-Zone Silicon Crystals
- Distribution of Dislocations in Germanium Single Crystals during Plastic Deformation
- Interaction between Dislocations and Non-Radiative Recombination Centers in GaAs
- Interaction of Dislocation with Atomic Order in Solid Solutions
- Role of Carbon in the Strengthening of Silicon Crystals
- HVEM Structure Images of Extended 60°- and Screw Dislocations in Silicon
- Anisotropy in the Hardness on (111) and (1^^-1^^-1^^-) Surfaces in InSb
- Dislocation Loops in an InSb Crystal
- Dislocation Configuration during Incubation Period of Creep in Germanium Crystals
- Effect of Dislocations on the Low Temperature Thermal Conductivity in Germanium
- Easy Operation of Dislocation Sources in the Surface Region of Crystal during Plastic Deformation
- Development of Dislocation Structure and Its Correlation with Slip Band Distribution in Germanium Crystals