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Accelerating exploitation of Co-Al-based superalloys from theoretical study

Journal Article · · Materials & Design
 [1];  [2];  [3];  [4];  [4];  [4];  [3];  [2]
  1. Xiamen University (China); DOE/OSTI
  2. Pennsylvania State University, University Park, PA (United States)
  3. Xiamen University (China); Fujian Key Laboratory of Materials Genome, Xiamen (China)
  4. Xiamen University (China)
The discovery of γ'-Co3(Al,W) opens up a pathway to exploit novel Co-Al-based alloys as candidates of the next generation of superalloys. Inspired by the unexpected finding of γ'-Co3(Al,W), we present a comprehensive investigation concerning the effect of alloying elements on phase stabilities and mechanical properties of Co3Al. Up to 22 transition metal elements, e.g. Sc, Ti, V, Cr, Mn, Fe, Ni, Y, Zr, Nb, Mo, Tc, Ru, Rh, Pd, Hf, Ta, W, Re, Os, Ir, and Pt, are considered. Results show that W, Ti, Re, V, and Ta favor to occupy the Al-sublattice. Pd, Pt, Rh, Ni, Ir, Fe, and Ru favor to occupy the Co-sublattice. The others can occupy both the Co- and Al-sublattices. W, Ta, V, Ti, Nb, Re, Mo, Pt, and Cr are shown to stabilize Co3Al. It verifies that elastic properties are roughly in inverse proportional to the volume change induced by alloying elements within each group of 3d, 4d, or 5d. Based on the analysis of electronic configurations, the influence mechanism of alloying elements is traceable from the chemical bonding and the geometry of charge density. We report the present calculations are in favorable accord with available experimental data in the literature.
Research Organization:
Pennsylvania State University, University Park, PA (United States)
Sponsoring Organization:
51475396; Ministry of Science and Technology of China; National Basic Research Program of China; National Key R&D Program of China; National Natural Science Foundation of China; National Science Foundation (NSF); Natural Science Foundation for Young Scholars of Fujian Province; USDOE; USDOE Office of Fossil Energy (FE)
Grant/Contract Number:
FE0024056
OSTI ID:
1538565
Alternate ID(s):
OSTI ID: 1582960
OSTI ID: 23121191
Journal Information:
Materials & Design, Journal Name: Materials & Design Journal Issue: C Vol. 142; ISSN 0264-1275
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (55)

The elastic constants of Ni3Al at 0 and 23.5 °C journal March 1981
The effects of Cr, Al, Ti, Mo, W, Ta, and Cb on the cyclic oxidation behavior of cast Ni-base superalloys at 1100 and 1150�C journal December 1983
The Closest Elastic Tensor of Arbitrary Symmetry to an Elasticity Tensor of Lower Symmetry journal October 2006
Temperature and composition dependence of the elastic constants of Ni3Al journal September 1999
Factors controlling the coercivity of cobalt-aluminium alloys containing between 20 and 40 at.% aluminium (Malcolloy) journal March 1972
Alloying behaviour of Ni3Al, Ni3Ga, Ni3Si and Ni3Ge journal February 1984
A simplified method for calculating the debye temperature from elastic constants journal July 1963
Zur Existenz einer Phase Co3Al vom Cu3Au-Strukturtyp journal December 1992
Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set journal July 1996
Evolution of Ni-based superalloys for single crystal gas turbine blade applications journal December 1999
Site preference and alloying effect of platinum group metals in γ′-Ni3Al journal October 2004
A combined first-principles and experimental study of the lattice site preference of Pt in B2 NiAl journal April 2005
Site preference of ternary alloying elements in Ni3Al: A first-principles study journal February 2006
First-principles studies of ternary site occupancy in the C15 NbCr2 Laves phase journal August 2006
Thermodynamic stability of Co–Al–W L12 γ′ journal April 2013
First-principles investigation of electronic, mechanical and thermodynamic properties of L12 ordered Co3(M, W) (M = Al, Ge, Ga) phases journal August 2013
Creep-induced planar defects in L12-containing Co- and CoNi-base single-crystal superalloys journal January 2015
Synthesis of a new tungsten-free γ–γ′ cobalt-based superalloy by tuning alloying additions journal February 2015
A new class of high strength high temperature Cobalt based γ–γ′ Co–Mo–Al alloys stabilized with Ta addition journal September 2015
Effects of alloying elements on elastic properties of Ni by first-principles calculations journal November 2009
First-principles thermodynamics from phonon and Debye model: Application to Ni and Ni3Al journal February 2010
Partition behavior of alloying elements and phase transformation temperatures in Co–Al–W-base quaternary systems journal January 2013
Thermodynamic, structural and elastic properties of Co3X (X = Ti, Ta, W, V, Al) compounds from first-principles calculations journal January 2013
Solubility and ordering of Ti, Ta, Mo and W on the Al sublattice in L12-Co3Al journal September 2015
Phase stability, mechanical properties and electronic structure of TiAl alloying with W, Mo, Sc and Yb: First-principles study journal February 2016
The critical role of Si doping in enhancing the stability of M6C carbides journal December 2017
Shape memory effect in the ferromagnetic Co–14at.% Al alloy journal April 2005
Solute partitioning and site preference in γ/γ′ cobalt-base alloys journal November 2012
A new tungsten-free γ–γ’ Co–Al–Mo–Nb-based superalloy journal March 2015
Alloying effects of Ta on the mechanical properties of γ’ Co3(Al, W): A first-principles study journal April 2015
Solute partitioning in multi-component γ/γ′ Co–Ni-base superalloys with near-zero lattice misfit journal March 2016
Interfacial fracture toughness of transition metal nitrides journal December 2008
Phase Transformation and Segregation to Lattice Defects in Ni-Base Superalloys journal November 2007
Regulating the coarsening of the γ′ phase in superalloys journal August 2015
Mapping Chemical Selection Pathways for Designing Multicomponent Alloys: an informatics framework for materials design journal December 2015
A first-principles study of the diffusion coefficients of alloying elements in dilute α-Ti alloys journal January 2016
Thermodynamics of Crystals and Melting journal August 1939
Magnetic properties of Co–Al melt-spun ribbons journal April 2006
First-principles elastic constants of α- and θ-Al2O3 journal March 2007
First-principle investigation of 3d transition metal elements in γ′-Co3(Al,W) journal May 2010
Effects of alloying elements and temperature on the elastic properties of dilute Ni-base superalloys from first-principles calculations journal September 2012
Site preference of refractory elements inγ′-Ni3Al alloyed with Ru journal September 2012
Elastic moduli of single crystal and polycrystalline MgO journal May 1963
XCII. Relations between the elastic moduli and the plastic properties of polycrystalline pure metals journal August 1954
High-precision sampling for Brillouin-zone integration in metals journal August 1989
Projector augmented-wave method journal December 1994
Efficient iterative schemes for ab initio total-energy calculations using a plane-wave basis set journal October 1996
From ultrasoft pseudopotentials to the projector augmented-wave method journal January 1999
Generalized Gradient Approximation Made Simple journal October 1996
First-principles calculations for point defects in solids journal March 2014
Ideal Pure Shear Strength of Aluminum and Copper journal October 2002
Cobalt-Base High-Temperature Alloys journal April 2006
Accurate spin-dependent electron liquid correlation energies for local spin density calculations: a critical analysis journal August 1980
L1 2 -Strengthened Cobalt-Base Superalloys journal July 2015
High Temperature Creep of New L12 Containing Cobalt-base Superalloys conference January 2012