Microhardness and brittle fracture of garnet single crystals

1984 ◽  
Vol 19 (4) ◽  
pp. 1159-1170 ◽  
Author(s):  
M. Pardavi-Horv�th
Keyword(s):  
Brittle Fracture ◽  
Single Crystals

The brittle fracture of [100] axis tungsten single crystals

1969 ◽  
Vol 19 (161) ◽  
pp. 951-966 ◽  
Author(s):  
J. E. Cordwell ◽  
D. Hull
Keyword(s):  
Brittle Fracture ◽  
Single Crystals

scholarly journals Brittle Fracture of Ice at 77 K

1975 ◽  
Vol 14 (71) ◽  
pp. 305-315 ◽  
Author(s):  
V. R. Parameswaran ◽  
Stephen J. Jones
Keyword(s):  
Brittle Fracture ◽  
Single Crystals ◽  
Uniaxial Compression ◽  
Fracture Stress ◽  
Room Temperature ◽  
Theoretical Strength ◽  
Strain Rates ◽  
Stress Strain

AbstractLaboratory-grown single crystals, both pure and HF-doped, and pure polycrystals of ice, as well as natural, columnar-grained ice from the River St Lawrence, have been deformed in uniaxial compression at 77 K at strain-rates between 10-5 and 10-3 s-1. Brittle fracture was observed, with stress-strain curves similar to those found for rocks at room temperature. The first cracks appeared at low stresses, ≈0.3 MN m-2, in agreement with theory, but the failure or fracture stress was high ≈50 MN m-2. The ratio of experimental to theoretical strength was o.28. HF doping of the single crystals had no effect at this temperature.

Plastic Behavior and Deformation Structure of Silicide Single Crystals with Transition Metals at High Temperatures

1993 ◽  
Vol 322 ◽  
Author(s):  
Y. Umakoshi ◽  
T. Nakashima ◽  
T. Nakano ◽  
E. Yanagisawa
Keyword(s):  
Brittle Fracture ◽  
Slip System ◽  
Single Crystals ◽  
Low Temperatures ◽  
Plastic Behavior ◽  
Deformation Structure ◽  
Secondary Slip ◽  
Ambient Temperatures ◽  
Brittle Transition ◽  
Increasing Temperature

AbstractThe mechanical and plastic behaviors of refractory silicide single crystals with Cllb (MoSi2), C40 (CrSi2, TaSi2 and NbSi2), D88 (Ti5Si3) and Cl (CoSi2 and (Co0.9Ni0.1)Si2) structures were investigated. The C40–type silicides were deformed by (0001)<1120> slip. Their yield stress decreased sharply with increasing temperature but NbSi2 and TaSi2 which were deformable even at low temperatures, exhibited anomalous strengthening around 1350°C. Deformation of Ti5Si3 whose ductile-brittle transition occurred around 1300°C was controlled by twins and the brittle fracture occurred on the basal plane. In CoSi2 the {001}<100> slip was only activated at ambient temperatures but addition of Ni activated {110}<110> slip as secondary slip system and improved the ductility. The creep behavior of MoSi2 and CrSi2 single crystals were also investigated and was found to be controlled by the viscous and glide motion of dislocations.

Brittle Fracture in Iridium Single Crystals

1968 ◽  
Vol 39 (5) ◽  
pp. 2391-2395 ◽  
Author(s):  
C. A. Brookes ◽  
J. H. Greenwood ◽  
J. L. Routbort
Keyword(s):  
Brittle Fracture ◽  
Single Crystals

Crystallographic features of the brittle fracture of molybdenum single crystals

1978 ◽  
Vol 10 (4) ◽  
pp. 464-469
Author(s):  
V. A. Ermishkin ◽  
V. M. Plastinin
Keyword(s):  
Brittle Fracture ◽  
Single Crystals
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