THE EFFECT OF EXTRANEOUS DEFORMATION ON STRAIN HARDENING IN Cu SINGLE CRYSTALS

1965 ◽  
Vol 6 (8) ◽  
pp. 148-150 ◽  
Author(s):  
Z. S. Basinski ◽  
P. J. Jackson
Keyword(s):  
Strain Hardening ◽  
Single Crystals

Anomaly of the Work Hardening of Zn-Cu Single Crystals Oriented for Slip in Secondary Systems

2011 ◽  
Vol 56 (4) ◽  
pp. 1021-1027
Author(s):  
K. Pieła
Keyword(s):  
Strain Hardening ◽  
Single Crystals ◽  
Yield Stress ◽  
Work Hardening ◽  
Temperature Anomaly ◽  
Strain Hardening Exponent ◽  
Plastic Behavior ◽  
Thermal Dependence ◽  
Copper Addition ◽  
Secondary Systems

Anomaly of the Work Hardening of Zn-Cu Single Crystals Oriented for Slip in Secondary SystemsThe copper alloyed (up to 1.5%) zinc single crystals oriented for slip in non-basal systems (orientation close to < 1120 >) were subjected to compression test within a range of temperatures of 77-293K. It has been stated, that Zn-Cu crystals exhibit characteristic anomalies of the thermal dependence of yield stress and of the strain hardening exponent. Both of them are related to the change in type and sequence of active non-basal slip systems: pyramidal of the 1storder {1011} < 1123 > (Py-1) and pyramidal of the 2ndorder {1122} < 1123 > (Py-2). The temperature anomaly of the yield stress results from the change of the slip from Py-2 systems to simultaneous slip in the Py-2 and Py-1 (Py-2 + Py-1) systems, occurring in the preyielding stage. On the other hand, sequential activation of pyramidal systems taking place in advanced plastic stage (i.e. the first Py-2 and next Py-2 + Py-1 systems) is responsible for temperature anomaly of strain hardening exponent. Increase in copper addition favors the activity of Py-2 systems at the expense of Py-1 slip, what leads to a drastic differences in plastic behavior of zinc single crystals.

Effect of Hydrogen Charging on Mechanical Twinning, Strain Hardening, and Fracture of ‹111› and ‹144› Hadfield Steel Single Crystals

2018 ◽  
Vol 21 (3) ◽  
pp. 263-273 ◽  
Author(s):  
E. G. Astafurova ◽  
G. G. Maier ◽  
E. V. Melnikov ◽  
V. A. Moskvina ◽  
V. F. Vojtsik ◽  
...  
Keyword(s):  
Strain Hardening ◽  
Single Crystals ◽  
Mechanical Twinning ◽  
Hadfield Steel ◽  
Hydrogen Charging
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