The effect of the initial dislocation density on dislocation multiplication and work-hardening characteristics of copper single crystals

1972 ◽  
Vol 12 (1) ◽  
pp. 239-249 ◽  
Author(s):  
H. Hildebrand
Keyword(s):  
Dislocation Density ◽  
Single Crystals ◽  
Work Hardening ◽  
Initial Dislocation Density ◽  
Copper Single Crystals ◽  
Dislocation Multiplication

Sub-Grain Size and Hall-Petch Relation in Pure Copper Single Crystals

2007 ◽  
Vol 345-346 ◽  
pp. 29-32
Author(s):  
Sei Miura ◽  
Yoshito Nishimura ◽  
Nagato Ono
Keyword(s):  
Grain Size ◽  
Dislocation Density ◽  
Single Crystals ◽  
Pure Copper ◽  
Petch Relation ◽  
Low Dislocation Density ◽  
Initial Dislocation Density ◽  
Bridgeman Method ◽  
Copper Single Crystals ◽  
Critical Resolved Shear Stress

The effect of sub-grain on the yield stress of pure copper single crystals with the [253] orientation was investigated by using the etch pit technique. The single crystal plates were successfully prepared from the seed crystals, which were produced at the melting temperature of 1473 K by the Bridgeman method. The present investigation confirmed the Hall-Petch relation concerning the effect of sub-grain boundaries on the macroscopic yielding of pure copper. The result derived from the extrapolation of the relationship of critical resolved shear stress (CRSS) and the initial dislocation density and sub-grain size is in good agreement with the evaluation in high purity copper single crystals of low dislocation density.

scholarly journals Relation between Bauschinger Effect and Work-Hardening in Copper Single Crystals

1983 ◽  
Vol 47 (7) ◽  
pp. 555-560 ◽  
Author(s):  
Takao Yakou ◽  
Tadashi Hasegawa ◽  
Masafumi Shimizu ◽  
Seiichi Karashima
Keyword(s):  
Single Crystals ◽  
Work Hardening ◽  
Bauschinger Effect ◽  
Copper Single Crystals
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