Dislocation studies on deformed single crystals of high-purity iron using positron annihilation: Determination of dislocation densities

1986 ◽  
Vol 34 (2) ◽  
pp. 823-836 ◽  
Author(s):  
Yong-Ki Park ◽  
James T. Waber ◽  
Michael Meshii ◽  
C. L. Snead ◽  
C. G. Park
Keyword(s):  
Single Crystals ◽  
Positron Annihilation ◽  
High Purity ◽  
Dislocation Densities ◽  
Purity Iron ◽  
High Purity Iron

DISLOCATION STRUCTURE IN "AS-GROWN" HIGH-PURITY IRON SINGLE CRYSTALS

1967 ◽  
Vol 45 (2) ◽  
pp. 1041-1045 ◽  
Author(s):  
S. Kadečková ◽  
B. Šesták
Keyword(s):  
Single Crystals ◽  
Dislocation Structure ◽  
High Purity ◽  
Starting Material ◽  
Etch Pits ◽  
Dislocation Densities ◽  
Purity Iron ◽  
High Purity Iron

The dislocation structure in iron single crystals prepared by two different strain–anneal techniques from the starting material of two different purities is studied by the method of etch pits. Average dislocation densities of 2.6 × 105 to 7 × 105 cm−2 and the absence of subboundaries are observed in single crystals grown statically or dynamically from zone-refined Johnson and Matthey spectrographic iron. The presence of broad subboundaries and average dislocation densities of 8.6 × 105 to 3.3 × 106 cm−2 is characteristic for single crystals grown from the non–zone-refined J. and M. iron. Annealing of "as-grown" crystals does not greatly influence the dislocation structure. It is assumed that the impurities are mainly responsible for the observed dislocation densities.

scholarly journals POSITRON ANNIHILATION STUDY ON DEFORMATION OF HIGH PURITY IRON UNDER DIFFERENT STRAIN RATE

1991 ◽  
Vol 40 (11) ◽  
pp. 1879
Author(s):  
WU YI-CHU ◽  
TIAN ZHONG-ZHUO ◽  
CHANG XIANG-RONG ◽  
XIAO JI-MEI
Keyword(s):  
Strain Rate ◽  
Positron Annihilation ◽  
High Purity ◽  
Purity Iron ◽  
High Purity Iron ◽  
Positron Annihilation Study

Low-temperature dislocation relaxations in high-purity iron single crystals deformed at 295 and 78 K

1988 ◽  
Vol 105 (1) ◽  
pp. K37-K40 ◽  
Author(s):  
P. P. Pal-Val ◽  
V. D. Natsik ◽  
S. Kadečková
Keyword(s):  
Low Temperature ◽  
Single Crystals ◽  
High Purity ◽  
Purity Iron ◽  
High Purity Iron
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