On the antiphase boundary energy of Ni3(Al, Ti) particles

1985 ◽  
Vol 74 (1) ◽  
pp. 29-37 ◽  
Author(s):  
M. Vittori ◽  
A. Mignone
Keyword(s):  
Boundary Energy ◽  
Antiphase Boundary ◽  
Ti Particles

ESTIMATION OF ANTIPHASE BOUNDARY ENERGY IN L12 TYPE TRI-ALUMINIDES

1994 ◽  
pp. 447-451
Author(s):  
HIDEKI HOSODA ◽  
TOMOO SUZUKI ◽  
YOSHINAO MISHIMA
Keyword(s):  
Boundary Energy ◽  
Antiphase Boundary

scholarly journals Effect of alloying elements on the γ’ antiphase boundary energy in Ni-base superalloys

2020 ◽  
Vol 117 ◽  
pp. 106670 ◽  
Author(s):  
M. Dodaran ◽  
A. Hemmasian Ettefagh ◽  
S.M. Guo ◽  
M.M. Khonsari ◽  
W.J. Meng ◽  
...  
Keyword(s):  
Boundary Energy ◽  
Antiphase Boundary ◽  
Alloying Elements ◽  
Effect Of Alloying

Effect of antiphase boundary energy on mutual cross slip of unlike dislocations

1974 ◽  
Vol 45 (6) ◽  
pp. 2441-2446 ◽  
Author(s):  
M. J. Marcinkowski ◽  
K. Sadananda
Keyword(s):  
Boundary Energy ◽  
Antiphase Boundary ◽  
Cross Slip

Cross-Slip from Octahedral Onto Cube Planes in Ni3Al

1974 ◽  
Vol 32 ◽  
pp. 502-503
Author(s):  
J. M. Oblak ◽  
W. H. Rand
Keyword(s):  
Flow Stress ◽  
Boundary Energy ◽  
Antiphase Boundary ◽  
Cross Slip ◽  
Temperature Range ◽  
Slip Event

Slip in Ni3Al takes place primarily upon close-packed <111> planes by the motion of paired a/2 dislocations, although slip can also be initiated upon cube planes at temperatures above 700°K (1,2). Because the antiphase boundary energy is at a minimum on <001> (3), a net reduction of energy is possible if such paired dislocations cross-slip from octahedral onto cube planes. The likelihood of this cross-slip event plays an important role in the theories on the flow stress of Ni3Al (1,2). Observations reported previously (h) demonstrate that cross-slip takes place at 1030°K. This investigation represents a more thorough exploration of its temperature range of occurrence.

scholarly journals First-Principles Investigation of Mechanical Behavior of B2 Type Aluminides: Feal and Nial

1990 ◽  
Vol 213 ◽  
Author(s):  
C. L. Fu ◽  
M. H. Yoo
Keyword(s):  
Charge Transfer ◽  
First Principles ◽  
Boundary Energy ◽  
Bond Formation ◽  
Antiphase Boundary ◽  
Repulsive Interaction ◽  
First Principles Calculations ◽  
Partial Dislocations ◽  
Cleavage Strength ◽  
Fe Sites

ABSTRACTFirst-principles calculations of the elastic constants, shear fault energies, and cleavage strength of NiAl and FeAl are presented. For NiAl, we find that the dissociation of <111> superdislocations into partial dislocations is unlikely, because of a high antiphase boundary energy and a weak repulsive elastic force between partial dislocations. FeAl has a high ideal cleavage strength as a result of the directional d-bond formation at the Fe sites. The strong ordering behavior of NiAl is explained in terms of the Al-to-Ni charge transfer and the repulsive interaction between Al atoms. The spontaneous glide decomposition of the <111> superdislocations in NiAl is also discussed.

Effect of composition on antiphase boundary energy inNi3Albased alloys:Ab initiocalculations

2016 ◽  
Vol 93 (22) ◽  
Author(s):  
O. I. Gorbatov ◽  
I. L. Lomaev ◽  
Yu. N. Gornostyrev ◽  
A. V. Ruban ◽  
D. Furrer ◽  
...  
Keyword(s):  
Boundary Energy ◽  
Antiphase Boundary
Sign in / Sign up

Export Citation Format

Share Document