Deformation microstructure of Ni3Al intermetallic compound macroalloyed with Pd

J. Sun; C. S. Lee; J. K L Lai

doi:10.1016/S0167-577X(96)00244-3

Deformation microstructure of Ni₃Al intermetallic compound macroalloyed with Pd

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

The deformation microstructure of the intermetallic compound Ni₃Al macroalloyed with Pd after compression at room temperature was studied by transmission electron microscopy. The general feature of the dislocation structure of Ni_74.5Pd₂Al_23.5 is similar to that in binary Ni₃Al. Dislocations are mostly dissociated into APB-coupled partials. The decrease of APB energy in Ni_74.5Pd₂Al_23.5 (γ₀₁₀ = 102 ± 11 mJ/m² and γ₁₁₁ = 144 ± 20 mJ/m²) is small compared with the binary Ni₃Al. In addition, SISFs (superlattice intrinsic stacking faults) are common debris in this alloy. The addition of Pd has no similar effect on SISFs as boron doping.

Original language	English
Pages (from-to)	1-4
Journal	Materials Letters
Volume	31
Issue number	1-2
DOIs	https://doi.org/10.1016/S0167-577X(96)00244-3
Publication status	Published - May 1997

Research Keywords

Antiphase boundaries
Deformation
Microstructure
Ni3Al
Palladium alloy

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@article{a653c3a1b81d471f8eb1007c34c8e5be,

title = "Deformation microstructure of Ni3Al intermetallic compound macroalloyed with Pd",

abstract = "The deformation microstructure of the intermetallic compound Ni3Al macroalloyed with Pd after compression at room temperature was studied by transmission electron microscopy. The general feature of the dislocation structure of Ni74.5Pd2Al23.5 is similar to that in binary Ni3Al. Dislocations are mostly dissociated into APB-coupled partials. The decrease of APB energy in Ni74.5Pd2Al23.5 (γ010 = 102 ± 11 mJ/m2 and γ111 = 144 ± 20 mJ/m2) is small compared with the binary Ni3Al. In addition, SISFs (superlattice intrinsic stacking faults) are common debris in this alloy. The addition of Pd has no similar effect on SISFs as boron doping.",

keywords = "Antiphase boundaries, Deformation, Microstructure, Ni3Al, Palladium alloy",

author = "J. Sun and Lee, \{C. S.\} and Lai, \{J. K L\}",

year = "1997",

month = may,

doi = "10.1016/S0167-577X(96)00244-3",

language = "English",

volume = "31",

pages = "1--4",

journal = "Materials Letters",

issn = "0167-577X",

publisher = "Elsevier B.V.",

number = "1-2",

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TY - JOUR

T1 - Deformation microstructure of Ni3Al intermetallic compound macroalloyed with Pd

AU - Sun, J.

AU - Lee, C. S.

AU - Lai, J. K L

PY - 1997/5

Y1 - 1997/5

N2 - The deformation microstructure of the intermetallic compound Ni3Al macroalloyed with Pd after compression at room temperature was studied by transmission electron microscopy. The general feature of the dislocation structure of Ni74.5Pd2Al23.5 is similar to that in binary Ni3Al. Dislocations are mostly dissociated into APB-coupled partials. The decrease of APB energy in Ni74.5Pd2Al23.5 (γ010 = 102 ± 11 mJ/m2 and γ111 = 144 ± 20 mJ/m2) is small compared with the binary Ni3Al. In addition, SISFs (superlattice intrinsic stacking faults) are common debris in this alloy. The addition of Pd has no similar effect on SISFs as boron doping.

AB - The deformation microstructure of the intermetallic compound Ni3Al macroalloyed with Pd after compression at room temperature was studied by transmission electron microscopy. The general feature of the dislocation structure of Ni74.5Pd2Al23.5 is similar to that in binary Ni3Al. Dislocations are mostly dissociated into APB-coupled partials. The decrease of APB energy in Ni74.5Pd2Al23.5 (γ010 = 102 ± 11 mJ/m2 and γ111 = 144 ± 20 mJ/m2) is small compared with the binary Ni3Al. In addition, SISFs (superlattice intrinsic stacking faults) are common debris in this alloy. The addition of Pd has no similar effect on SISFs as boron doping.

KW - Antiphase boundaries

KW - Deformation

KW - Microstructure

KW - Ni3Al

KW - Palladium alloy

UR - https://www.scopus.com/pages/publications/0031143893

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0031143893&origin=recordpage

U2 - 10.1016/S0167-577X(96)00244-3

DO - 10.1016/S0167-577X(96)00244-3

M3 - RGC 21 - Publication in refereed journal

SN - 0167-577X

VL - 31

SP - 1

EP - 4

JO - Materials Letters

JF - Materials Letters

IS - 1-2

ER -