Macroscopic strain localization in polycrystalline nickel

2020 ◽  
Author(s):  
M. V. Nadezhkin ◽  
S. A. Barannikova ◽  
V. V. Gorbatenko ◽  
L. B. Zuev
Keyword(s):  
Strain Localization ◽  
Macroscopic Strain ◽  
Polycrystalline Nickel

Tuning Strain Localization in Polycrystalline Nickel-Based Superalloys by Thermomechanical Processing

2020 ◽  
pp. 471-481
Author(s):  
M. A. Charpagne ◽  
J. C. Stinville ◽  
A. T. Polonsky ◽  
M. P. Echlin ◽  
S. P. Murray ◽  
...  
Keyword(s):  
Strain Localization ◽  
Thermomechanical Processing ◽  
Polycrystalline Nickel

Modeling of macroscopic strain localization in alloys with the L12 structure

2011 ◽  
Vol 54 (8) ◽  
pp. 885-897 ◽  
Author(s):  
V. A. Starenchenko ◽  
Yu. V. Solov’eva ◽  
Ya. D. Fakhrutdinova ◽  
L. A. Valuiskaya
Keyword(s):  
Strain Localization ◽  
Macroscopic Strain ◽  
L12 Structure

Macroscopic Strain Localization: Role of Microstructural Instabilities

1989 ◽  
pp. 403-408
Author(s):  
P. Martin ◽  
G. L'Espérance ◽  
J.H. Schmitt ◽  
B. Baudelet ◽  
A. Korbel
Keyword(s):  
Strain Localization ◽  
Macroscopic Strain

Voids in Quenched Nickel

1968 ◽  
Vol 26 ◽  
pp. 266-267
Author(s):  
J. J. Laidler
Keyword(s):  
Electron Beam ◽  
Ambient Temperature ◽  
Cooling Rate ◽  
Three Dimensional ◽  
Cooling Curve ◽  
Polycrystalline Nickel ◽  
Quenching Temperature ◽  
Long Tail ◽  
Diffusion Pump

The presence of three-dimensional voids in quenched metals has long been suspected, and voids have indeed been observed directly in a number of metals. These include aluminum, platinum, and copper, silver and gold. Attempts at the production of observable quenched-in defects in nickel have been generally unsuccessful, so the present work was initiated in order to establish the conditions under which such defects may be formed.Electron beam zone-melted polycrystalline nickel foils, 99.997% pure, were quenched from 1420°C in an evacuated chamber into a bath containing a silicone diffusion pump fluid . The pressure in the chamber at the quenching temperature was less than 10-5 Torr . With an oil quench such as this, the cooling rate is approximately 5,000°C/second above 400°C; below 400°C, the cooling curve has a long tail. Therefore, the quenched specimens are aged in place for several seconds at a temperature which continuously approaches the ambient temperature of the system.

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