Effect of thermal lattice expansion on the stacking fault energies of fcc Fe andFe75Mn25alloy

2016 ◽  
Vol 93 (5) ◽  
Author(s):  
Vsevolod I. Razumovskiy ◽  
Andrei Reyes-Huamantinco ◽  
Peter Puschnig ◽  
A. V. Ruban
Keyword(s):  
Stacking Fault ◽  
Lattice Expansion ◽  
Thermal Lattice Expansion ◽  
Stacking Fault Energies

Stacking fault energies of random metallic alloys

1993 ◽  
Vol 67 (6) ◽  
pp. 1447-1457 ◽  
Author(s):  
S. Crampin ◽  
D. D. Vvedensky ◽  
R. Monnier
Keyword(s):  
Stacking Fault ◽  
Metallic Alloys ◽  
Stacking Fault Energies

Method to derive stacking fault energies from the interaction of multribbons with domain boundaries

1972 ◽  
Vol 9 (2) ◽  
pp. 581-591
Author(s):  
E. Torfs ◽  
R. de Ridder ◽  
J. van Landuyt ◽  
S. Amelinckx
Keyword(s):  
Stacking Fault ◽  
Domain Boundaries ◽  
Stacking Fault Energies

GRAIN-SIZE DEPENDENCE OF FRACTURE IN COPPER–ALUMINIUM ALLOYS EMBRITTLED BY MERCURY

1967 ◽  
Vol 45 (2) ◽  
pp. 1235-1249 ◽  
Author(s):  
F. W. J. Pargeter ◽  
M. B. Ives
Keyword(s):  
Aluminium Alloys ◽  
Cellular Network ◽  
Size Dependence ◽  
Network Formation ◽  
Pure Copper ◽  
Stacking Fault ◽  
Stacking Fault Energy ◽  
Aluminium Content ◽  
Α Phase ◽  
Stacking Fault Energies

Polycrystalline specimens of α-phase copper–aluminium alloys of varying composition, amalgamated with mercury, have been deformed in tension in a soft tensile machine. In all cases, brittle intergranular failure occurred at stresses and strains below those required for fracture in air, the degree of embrittlement increasing with increasing aluminium content. The alloys having stacking-fault energies less than '~8 erg/cm2 were found to obey quite well the Petch–Stroh relation:[Formula: see text]The other alloys showed deviations from this relation which became more marked with increasing stacking-fault energy. Values of the fracture energy, varying from ~48 erg/cm2 for pure copper to ~470 erg/cm2 for Cu −8 wt.% Al, have been obtained for all of the alloys. These values are only applicable for relatively small grain sizes.The deviation from the Petch–Stroh relation in the high stacking-fault energy alloys is thought to be due to their tendency to show cross-slip and cellular-network formation, rather than coplanar arrays of dislocations as required by the Stroh model. The low stacking-fault energy alloys typically show well-defined pileups and so obey the Petch–Stroh relations, as expected.

scholarly journals Temperature Effects on the Elastic Constants, Stacking Fault Energy and Twinnability of Ni3Si and Ni3Ge: A First-Principles Study

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 364 ◽  
Author(s):  
Lili Liu ◽  
Liwan Chen ◽  
Youchang Jiang ◽  
Chenglin He ◽  
Gang Xu ◽  
...  
Keyword(s):  
Elastic Constants ◽  
First Principles ◽  
Antiphase Boundary ◽  
Stacking Fault ◽  
First Principles Calculations ◽  
Planar Fault ◽  
Different Temperatures ◽  
Generalized Stacking Fault ◽  
Increasing Temperature ◽  
Stacking Fault Energies

The volume versus temperature relations for Ni 3 Si and Ni 3 Ge are obtained by using the first principles calculations combined with the quasiharmonic approach. Based on the equilibrium volumes at temperature T, the temperature dependence of the elastic constants, generalized stacking fault energies and generalized planar fault energies of Ni 3 Si and Ni 3 Ge are investigated by first principles calculations. The elastic constants, antiphase boundary energies, complex stacking fault energies, superlattice intrinsic stacking fault energies and twinning energy decrease with increasing temperature. The twinnability of Ni 3 Si and Ni 3 Ge are examined using the twinnability criteria. It is found that their twinnability decrease with increasing temperature. Furthermore, Ni 3 Si has better twinnability than Ni 3 Ge at different temperatures.

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