Numerical study of slip system activity and crystal lattice rotation under wedge nanoindents in tungsten single crystals

Author(s):  
T. Volz ◽  
R. Schwaiger ◽  
J. Wang ◽  
S. M. Weygand
2006 ◽  
Vol 86 (12) ◽  
pp. 795-805 ◽  
Author(s):  
J. N. Florando ◽  
M. Rhee ◽  
A. Arsenlis ◽  
M. M. LeBlanc ◽  
D. H. Lassila

1988 ◽  
Vol 36 (8) ◽  
pp. 1961-1970 ◽  
Author(s):  
G.R Canova ◽  
C Fressengeas ◽  
A Molinari ◽  
U.F Kocks

Author(s):  
G. A. Stone ◽  
G. Thomas

A single crystal stressed in the [3]𝛄 direction at 185°K was transformed to 5% 𝛂 martensite and 2% Ɛ martensite by volume. The austenite slip system of maximum shear stress is the (11)𝛄 [01)𝛄. Fig. 1 shows a two surface study using the electron and optical microscopes. The a martensite is confined between £martensite plates with the (0001)Ɛ ∥ (11)𝛄. The size of the acicular martensite crystals is controlled by the spacing of the £ martensite plates. These £ martensite plates are seen in Fig. 1A as dark vertical bands. The axes of the acicular crystals lie in the (11)𝛄 plane. The £ martensite habit plane is defined as the plane perpendicular to the (11)𝛄 containing the vector defining the crystal axis.


2021 ◽  
Vol 1016 ◽  
pp. 1443-1447
Author(s):  
Tubasa Suzuki ◽  
Masaki Tanaka ◽  
Tatsuya Morikawa ◽  
Yelm Okuyama ◽  
Jun Fujise ◽  
...  

Czochralski silicon single crystals were deformed in tensile tests along the direction at between 1173 K and 1373. Yield point phenomenon were observed in the specimens deformed at below 1273 K while continues yield was observed in the specimens deformed at above 1323 K. It is due to the effect of dislocation starvation in the used crystals. Work-hardening rates in stage II were consistent with those reported in fcc crystals such as copper. The onset of stage II was found to be active before the Schmid factor of the second slip system becomes larger than that of the primary slip system. Electron backscattered diffraction images indicated clear kink bands near grips and in the parallel portion. The kink bands were formed at the middle of stage I, which suggest that the formation of kink bands is a trigger of stage II.


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