In situ x-ray synchrotron diffraction experiments were carried out on nickel-based high-strength superalloys under pressure to understand their deformation mechanism using a diamond anvil cell (DAC). Radial x-ray diffraction determines the room-temperature equations of state and yield strengths of binary Ni3Al alloy and 500 ppm boron-doped Ni3Al to pressures of 20 and 46 GPa, respectively. Crystallographic preferred orientations observed in these superalloys due to anisotropic stress field in DAC indicate the onset of plastic deformation. Inverse pole figure analysis reveals that the underlying deformation mechanisms change from an octahedral slip to a simultaneous activation of octahedral and cube slips upon doping with boron. The yield-strength values were found to increase with pressure and are comparable to those determined from axial diffraction experiments. The results indicate that the yield strength of Ni3Al:B is about 0.5 GPa higher (at pressures below 20 GPa) due to grain boundary strengthening by boron. It is shown that due to high elastic anisotropy of Ni3Al alloy, the yield-strength estimations from diffraction experiments strongly depend on the micromechanical model used to convert the measured elastic strains into stresses.

1
Ball
,
J.
and
Gottstein
,
G.
, “
Large strain deformation of Ni3Al + B: Part I. Microstructure and texture evolution during rolling
,”
Intermetallics
1
,
171
185
(
1993
).
2
Ball
,
J.
and
Gottstein
,
G.
, “
Large-strain deformation of Ni3Al + B: Part III. Microstructure, long-range order and mechanical properties of deformed and recrystallized Ni3Al + B
,”
Intermetallics
2
,
205
219
(
1994
).
3
Ball
,
J.
,
Zeumer
,
B.
, and
Gottstein
,
G.
, “
Microstructure and texture development in boron doped Ni3Al
,”
Textures Microstruct.
14
,
653
658
(
1991
).
4
Birch
,
F.
, “
Finite elastic strain of cubic crystals
,”
Phys. Rev.
71
(
11
),
809
824
(
1947
).
5
Boucetta
,
S.
,
Chihi
,
T.
,
Ghebouli
,
B.
, and
Fatmi
,
M.
, “
First-principles study of the elastic and mechanical properties of Ni3Al under high pressure
,”
Mater. Sci. Pol.
28
(
1
),
347
355
(
2010
).
6
Chen
,
L.
,
Wen
,
W.
, and
Cui
,
H.
, “
Yielding description for a Ni3Al based intermetallic alloy
,”
Mater. Des.
41
,
192
197
(
2012
).
7
Dey
,
G. K.
, “
Physical metallurgy of nickel aluminides
,”
Sadhana
28
,
247
262
(
2003
).
8
Ezz
,
S. S.
,
Pope
,
D. P.
, and
Paidar
,
V.
, “
The tension/compression flow stress asymmetry in Ni3(Al,Nb) single crystals
,”
Acta Metall.
30
(
5
),
921
926
(
1982
).
9
Frankel
,
J.
,
Vassiliou
,
J.
,
Jamieson
,
J. C.
,
Dandekar
,
D. P.
, and
Scholz
,
W.
, “
The elastic constants of Ni3Al to 1.4 GPa
,”
Physica
139-140B
,
198
201
(
1986
).
10
Horto
,
J. A.
,
Baker
,
I.
, and
Yoo
,
M. H.
, “
Slip-plane disordering in stoichiometric Ni3Al
,”
Philos. Mag. A
63
(
2
),
319
335
(
1991
).
11
Huang
,
Y.
,
Aziz
,
M. J.
,
Hutchinson
,
J. W.
,
Evans
,
A. G.
,
Saha
,
R.
, and
Nix
,
W. D.
, “
Comparison of mechanical properties of Ni3Al thin films in disordered fcc and ordered L12 phases
,”
Acta Mater.
49
,
2853
2861
(
2001
).
12
Iotova
,
D.
,
Kioussis
,
N.
, and
Lim
,
S. P.
, “
Electronic structure and elastic properties of the Ni3X (X = Mn, Al, Ga, Si, Ge) intermetallics
,”
Phys. Rev. B
54
(
20
),
14413
14422
(
1996
).
13
Jozwik
,
P.
,
Polkowski
,
W.
, and
Bojar
,
Z.
, “
Applications of Ni3Al based intermetallic alloys—Current stage and potential perceptivities
,”
Materials
8
,
2537
2568
(
2015
).
14
Kaneno
,
Y.
,
Takahashi
,
A.
, and
Takasugi
,
T.
, “
Cold rolling texture of Ni-based L12 ordered intermetallic alloys
,”
Mater. Trans.
47
(
6
),
1485
1491
(
2006
).
15
Kazantseva
,
N. V.
,
Stepanova
,
N. N.
, and
Rigmant
,
M. B.
,
Superalloys. Analysis and Control of Failure Process
(
CRC Press
,
Boca Raton
,
FL
,
2019
).
16
Kishida
,
K.
,
Demura
,
M.
,
Kobayashi
,
S.
,
Xu
,
Y.
, and
Hirano
,
T.
, “
Microstructure and texture evolution during cold rolling and recrystallization of Ni3Al single crystals
,”
Defect Diffus. Forum
233-234
,
37
48
(
2004
).
17
Lin
,
J.-F.
,
Shu
,
J.
,
Mao
,
H.-k.
,
Hemley
,
R. J.
, and
Shen
,
G.
, “
Amorphous boron gasket in diamond anvil cell research
,”
Rev. Sci. Instrum.
74
(
11
),
4732
4736
(
2003
).
18
Lutterotti
,
L.
,
Matthies
,
S.
,
Wenk
,
H.-R.
,
Schultz
,
A. S.
, and
Richardson
,
J. W.
, “
Combined texture and structure analysis of deformed limestone from time-of-flight neutron diffraction spectra
,”
J. Appl. Phys.
81
,
594
600
(
1997
).
19
Lutterotti
,
L.
,
Vasin
,
R.
, and
Wenk
,
H.-R.
, “
Rietveld texture analysis from synchrotron diffraction images. I. Calibration and basic analysis
,”
Powder Diffr.
29
(
1
),
76
84
(
2014
).
20
Makineni
,
S. K.
,
Nithin
,
B.
, and
Chattopadhyay
,
K.
, “
A new tungsten-free γ–γ′ Co–Al–Mo–Nb-based superalloy
,”
Scr. Mater.
98
,
36
39
(
2015a
).
21
Makineni
,
S. K.
,
Nithin
,
B.
, and
Chattopadhyay
,
K.
, “
Synthesis of a new tungsten-free γ–γ′ cobalt-based superalloy by tuning alloying additions
,”
Acta Mater.
85
,
85
94
(
2015b
).
22
Matsui
,
M.
,
Ito
,
E.
,
Katsura
,
T.
,
Yamazaki
,
D.
,
Yoshino
,
T.
,
Yokoyama
,
A.
, and
Funakoshi
,
K.-I.
, “
The temperature-pressure-volume equation of state of platinum
,”
J. Appl. Phys.
105
,
013505
(
2009
).
23
Matthies
,
S.
, “
20 years WIMV, history, experience and contemporary developments
,”
Mater. Sci. Forum
408-412
,
95
100
(
2002
).
24
Matthies
,
S.
,
Humbert
,
M.
, and
Schuman
,
C.
, “
On the use of the geometric mean approximation in residual stress analysis
,”
Phys. Status Solidi B
186
(
2
),
K41
K44
(
1994
).
25
Matthies
,
S.
,
Merkel
,
S.
,
Wenk
,
H.-R.
,
Hemley
,
R. J.
, and
Mao
,
H.-k.
, “
Effects of texture on the determination of elasticity of polycrystalline ε-iron from diffraction measurements
,”
Earth Planet. Sci. Lett.
194
(
1-2
),
201
212
(
2001a
).
26
Matthies
,
S.
,
Priesmeyer
,
H. G.
, and
Daymond
,
M. R.
, “
On the diffractive determination of single-crystal elastic constants using polycrystalline samples
,”
J. Appl. Crystallogr.
34
,
585
601
(
2001b
).
27
Mauer
,
F. A.
,
Munro
,
R. G.
,
Piermarini
,
G. J.
,
Block
,
S.
, and
Dandekar
,
D. P.
, “
Compression studies of a nickel-based superalloy, MAR-M200, and of Ni3Al
,”
J. Appl. Phys.
58
(
10
),
3727
3730
(
1985
).
28
Meade
,
C.
and
Jeanloz
,
R.
, “
Yield strength of MgO to 40 GPa
,”
J. Geophys. Res.
93
(
B4
),
3261
3269
(
1988
).
29
Menéndez-Proupin
,
E.
and
Singh
,
A. K.
, “
Ab initio calculations of elastic properties of compressed Pt
,”
Phys. Rev. B
76
,
054117
(
2007
).
30
Merkel
,
S.
and
Yagi
,
T.
, “
X-ray transparent gasket for diamond anvil cell high pressure experiments
,”
Rev. Sci. Instrum.
76
,
046109
(
2005
).
31
Minshull
,
J. P.
,
Neumeier
,
S.
,
Tucker
,
M. G.
, and
Stone
,
H. J.
, “
A1-L12 structures in the Al-Co-Ni-Ti quaternary phase system
,”
Adv. Mater. Res.
278
,
399
404
(
2011
).
32
Nitz
,
A.
,
Lagerpusch
,
U.
, and
Nembach
,
E.
, “
CRSS anisotropy and tension/compression asymmetry of a commercial superalloy
,”
Acta Mater.
46
(
13
),
4769
4779
(
1998
).
33
Otto
,
J. W.
,
Vassiliou
,
J. K.
, and
Frommeyer
,
G.
, “
Non-hydrostatic conditions in high-pressure devices analysis of plastic deformation with EDX
,”
Rev. High Pressure Sci. Technol.
7
,
1511
1513
(
1998
).
34
Otto
,
J. W.
,
Vassiliou
,
J. K.
, and
Frommeyer
,
G.
, “
Elastic and plastic deformation of NaCl and Ni3Al polycrystals during compression in a multi-anvil apparatus
,”
High Pressure Res.
17
,
13
34
(
2000
).
35
Ovcharenko
,
V. E.
,
Boyangin
,
E. N.
,
Pshenichnikov
,
A. P.
, and
Krilova
,
T. A.
, “
Structural-phase state and strength properties of pressure-synthesized Ni3Al intermetallic compound
,”
Mater. Sci. Forum
906
,
95
100
(
2017
).
36
Pollock
,
T. M.
and
Tin
,
S.
, “
Nickel-based superalloys for advanced turbine engines: Chemistry, microstructure and properties
,”
J. Propul. Power
22
(
2
),
361
374
(
2006
).
37
Popa
,
N. C.
, “
The (hkl) dependence of diffraction-line broadening caused by strain and size for all Laue groups in Rietveld refinement
,”
J. Appl. Crystallogr.
31
(
2
),
176
180
(
1998
).
38
Prikhodko
,
S. V.
,
Carnes
,
J. D.
,
Isaak
,
D. G.
,
Yang
,
H.
, and
Ardell
,
A. J.
, “
Temperature and composition dependence of the elastic constants of Ni3Al
,”
Metall. Mater. Trans. A
30
,
2403
2408
(
1999
).
39
Qian
,
X. R.
and
Chou
,
Y. T.
, “
Alloy softening in Ni3Al polycrystals
,”
J. Mater. Sci.
27
,
1036
1044
(
1992
).
40
Raabe
,
D.
, “
Modelling of active slip systems, Taylor factors and grain rotations during rolling and compression deformation of polycrystalline intermetallic L12 compounds
,”
Acta Metal. Mater.
43
(
4
),
1531
1540
(
1995
).
41
Raju
,
S. V.
,
Oni
,
A. A.
,
Godwal
,
B. K.
,
Yan
,
J.
,
Drozd
,
V.
,
Srinivasan
,
S.
,
LeBeau
,
J. M.
,
Rajan
,
K.
, and
Saxena
,
S. K.
, “
Effect of B and Cr on elastic strength and crystal structure of Ni3Al alloys under high pressure
,”
J. Alloys Compd.
619
,
616
620
(
2015
).
42
Raju
,
S. V.
,
Godwal
,
B. K.
,
Yan
,
J.
,
Jeanloz
,
R.
, and
Saxena
,
S. K.
, “
Yield strength of Ni-Al-Cr superalloy under pressure
,”
J. Alloys Compd.
657
,
889
892
(
2016
).
43
Raju
,
S. V.
,
Godwal
,
B. K.
,
Singh
,
A. K.
,
Jeanloz
,
R.
, and
Saxena
,
S. K.
, “
High-pressure strengths of Ni3Al and Ni-Al-Cr
,”
J. Alloys Compd.
741
,
642
647
(
2018
).
44
Ramesh
,
R.
,
Pathiraj
,
B.
, and
Kolster
,
B. H.
, “
TEM and high-temperature X-ray diffractometric studies on the structural transformations in Ni3Al
,”
J. Mater. Sci.
29
,
4764
4770
(
1994
).
45
Reed
,
R. C.
,
The Superalloys Fundamentals and Applications
(
Cambridge University Press
,
Cambridge
,
2006
).
46
Rollett
,
A. D.
and
Wright
,
S. I.
, “
Typical textures in metals
,” in
Texture and Anisotropy
, edited by
U. F.
Kocks
,
C. N.
Tomé
, and
H.-R.
Wenk
(
Cambridge University Press
,
1998
), pp.
178
238
.
47
Ruoff
,
A. L.
, “
Stress anisotropy in opposed anvil high-pressure cells
,”
J. Appl. Phys.
46
,
1389
1392
(
1975
).
48
Sato
,
J.
,
Omori
,
T.
,
Oikawa
,
K.
,
Ohnuma
,
I.
,
Kainuma
,
R.
, and
Ishida
,
K.
, “
Cobalt-base high-temperature alloys
,”
Science
312
,
90
91
(
2006
).
49
Schulson
,
E. M.
,
Weihs
,
T. P.
,
Viens
,
D. V.
, and
Baker
,
I.
, “
The effect of grain size on the yield strength of Ni3Al
,”
Acta Metall.
33
(
9
),
1587
1591
(
1985
).
50
Singh
,
A. K.
, “
The lattice strains in a specimen (cubic system) compressed nonhydrostatically in an opposed anvil device
,”
J. Appl. Phys.
73
,
4278
4286
(
1993
).
51
Singh
,
A. K.
,
Balasingh
,
C.
,
Mao
,
H.-k.
,
Hemley
,
R. J.
, and
Shu
,
J.
, “
Analysis of lattice strains measured under nonhydrostatic pressure
,”
J. Appl. Phys.
83
(
12
),
7567
7575
(
1998
).
52
Sung
,
C.-M.
,
Goetze
,
C.
, and
Mao
,
H.-K.
, “
Pressure distribution in the diamond anvil press and the shear strength of fayalite
,”
Rev. Sci. Instrum.
48
(
11
),
1386
1391
(
1977
).
53
Warren
,
B. E.
,
X-ray Diffraction
(
Dover Publications Inc.
,
New York
,
1990
).
54
Wenk
,
H.-R.
,
Matthies
,
S.
,
Donovan
,
J.
, and
Chateigner
,
D.
, “
BEARTEX a windows-based program system for quantitative texture analysis
,”
J. Appl. Crystallogr.
31
,
262
269
(
1998
).
55
Wenk
,
H.-R.
,
Lutterotti
,
L.
,
Kaercher
,
P.
,
Kanitpanyacharoen
,
W.
,
Miyagi
,
L.
, and
Vasin
,
R.
, “
Rietveld texture analysis from synchrotron diffraction images. II. complex multiphase materials and diamond anvil cell experiments
,”
Powder Diffr.
29
(
3
),
220
232
(
2014
).

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