1 |
Ni47.9-Al10.2-Co16.9-Cr7.4-Fe8.9-Mo0.9-Nb1.2-W0.4-C0.4-Ti5.8
|
Vac. arc melting followed by DS to produce columnar microstructure |
Solution Treated (ST) at 1210°C/10h to Homogenize; Aging at 800°C/20h |
γ +γ' - L12 -Ni3(Ti,Al) (69% 290nm avg. size) |
TKT-HESA1-FCC-Ti5.8 |
Gaber1515 Gaber KW. The design and characterization of HEA for high-temperature applications. New Mexico: New Mexico Institute of Mining and Technology; 2020., Tsao et al.1616 Tsao TK, Yeh AC, Kuo CM, Kakehi K, Murakami H, Yeh JW, et al. The high temperature tensile and creep behaviors of high entropy superalloy. Sci Rep. 2017;7(1):12658. |
2 |
Al6.25-C1-Co15-Cr13-Fe4.5-Mo1.75-Nb0.6-Ni48-V5-Ti5
|
Vac. arc melting (5 times) and suction casting |
ST 1175°C/2h-850°C/8h-650°C/8h-Water Quenched (WQ) |
60% vol. fraction of γ' - L12 ; 450nm sized γ'
|
KWG-HESA2-FCC-Ti5 |
Gaber1515 Gaber KW. The design and characterization of HEA for high-temperature applications. New Mexico: New Mexico Institute of Mining and Technology; 2020. |
3 |
Al10-Co25-Cr8-Fe15-Ni36-Ti6
|
Vac. induction melted and solidified directionally |
Homogenized at 1220°C/20h/Furnace Cooled (FC)-900°C/5h/Air Cooled (AC) |
L12 γ' Ni3 (Ti,Al) (45% Vf/450nm) in γ FCC solid sol. & B2/NiAl (needle like -up to 50μm long) (< 5% Vf) precipitates |
HMD-HESA3-FCC-Ti6-5H |
Daoud et al.1717 Daoud HM, Manzoni AM, Wanderka N, Glatzel U. High-temperature tensile strength of Al10Co25Cr8Fe15Ni36Ti6 compositionally complex alloy (high entropy alloy). J Mater. 2015;67:2271-7. |
4 |
Al10-Co25-Cr8-Fe15-Ni36-Ti6
|
Vac. induction melted and solidified directionally |
Homogenized at 1220°C/20h/FC-900°C/50h/AC |
L12 γ'-Ni3(Ti,Al)(46% Vf/460nm) in γ FCC solid sol. & B2/NiAl (needle like, up to 50μm long) (<5% Vf) ppts |
HMD-HESA3-FCC-Ti6-50H |
Daoud et al.1717 Daoud HM, Manzoni AM, Wanderka N, Glatzel U. High-temperature tensile strength of Al10Co25Cr8Fe15Ni36Ti6 compositionally complex alloy (high entropy alloy). J Mater. 2015;67:2271-7. |
5 |
Al20.4-Mo10.5-Nb22.4-Ta10.1-Ti17.8-Zr18.8
|
Vac. arc melting-remelted 5 times |
AC, Hot Isostatic Pressing (HIP) at 1400°C/207 MPa/2h, 1400°C/24 in Ar |
BCC1+BCC2; 75 μm avg. grain size; nanolamellar structures of the two phases |
ONS-BCC-Ti17.8 |
Senkov et al.1818 Senkov ON, Senkova SV, Woodward C. Effect of aluminum on the microstructure and properties of two refractory high entropy alloys. Acta Mater. 2014;68:214-28.,1919 Senkov ON, Woodward C, Miracle DB. Microstructure and properties of aluminum-contaning refractory high entropy alloys. J Mater. 2014;66(10):2030-42. |
6 |
Al21.9-Nb32-Ta9-Ti26.7-Zr10.3
|
Vac. arc melting-remelted 5 times |
AC, HIP at 1400°C/207 MPa/2h, 1400°C/24h in Ar |
BCC; 2000 μm avg. grain size; nanophases |
ONS-BCC-Ti26.7 |
Senkov et al.1818 Senkov ON, Senkova SV, Woodward C. Effect of aluminum on the microstructure and properties of two refractory high entropy alloys. Acta Mater. 2014;68:214-28.,1919 Senkov ON, Woodward C, Miracle DB. Microstructure and properties of aluminum-contaning refractory high entropy alloys. J Mater. 2014;66(10):2030-42. |
7 |
Al7.9-Hf12.8-Nb23-Ta16.8-Ti18.9-Zr20.6
|
Vac. arc melting-remelted 5 times |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h in Ar |
BCC; 140 μm avg. grain size; nanophases |
ONS-BCC-Ti18.9 |
Senkov et al.1818 Senkov ON, Senkova SV, Woodward C. Effect of aluminum on the microstructure and properties of two refractory high entropy alloys. Acta Mater. 2014;68:214-28.,1919 Senkov ON, Woodward C, Miracle DB. Microstructure and properties of aluminum-contaning refractory high entropy alloys. J Mater. 2014;66(10):2030-42. |
8 |
Al5.7-Nb23.5-Ta17.6-Ti27.2-Zr26
|
Vac. arc melting-remelted 5 times |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h in Ar |
BCC1+BCC2; 200 μm avg. grain size; nanolamellar structures of the two phases |
ONS-BCC-Ti27.2 |
Senkov et al.1818 Senkov ON, Senkova SV, Woodward C. Effect of aluminum on the microstructure and properties of two refractory high entropy alloys. Acta Mater. 2014;68:214-28.,1919 Senkov ON, Woodward C, Miracle DB. Microstructure and properties of aluminum-contaning refractory high entropy alloys. J Mater. 2014;66(10):2030-42. |
9 |
Al5.2-Nb23.4-Ta13.2-Ti27.7-V4.3-Zr26.2
|
Vac. arc melting-remelted 5 times |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h in Ar |
BCC; 180 μm avg. grain size; nanophases |
ONS-BCC-Ti27.7 |
Senkov et al.1818 Senkov ON, Senkova SV, Woodward C. Effect of aluminum on the microstructure and properties of two refractory high entropy alloys. Acta Mater. 2014;68:214-28.,1919 Senkov ON, Woodward C, Miracle DB. Microstructure and properties of aluminum-contaning refractory high entropy alloys. J Mater. 2014;66(10):2030-42. |
10 |
Al11.3-Nb22.3-Ta13.1-Ti27.9-V4.5-Zr20.9
|
Vac. arc melting-remelted 5 times |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h in Ar |
BCC1+BCC2; 100 μm avg. grain size; nanolamellar structures of the two phases |
ONS-BCC-Ti27.9 |
Senkov et al.1818 Senkov ON, Senkova SV, Woodward C. Effect of aluminum on the microstructure and properties of two refractory high entropy alloys. Acta Mater. 2014;68:214-28.,1919 Senkov ON, Woodward C, Miracle DB. Microstructure and properties of aluminum-contaning refractory high entropy alloys. J Mater. 2014;66(10):2030-42. |
11 |
Al26.6-Nb23.8-Ti25.1-V24.5
|
Vac. arc melting - remelting 5 times - and casting |
Homogenized at 1200°C/24h |
BCC SS (300 to 400 μm grain size) |
NDS-BCC-Ti25.1 |
Stepanov et al.2020 Stepanov ND, Shaysultanov DG, Salishchev GA, Tikhonovsky MA. Structure and mechanical properties of a lightweight AlNbTiV high entropy alloy. Mater Lett. 2015;142:153-5. |
12 |
Nb20-Cr20-Mo10-Ta10-Ti20-Zr20
|
Vac. arc melting and re-melted 5 times and casting |
AC, HIP at 1450°C/207 MPa/3h |
BCC1 (67% Vf) +BCC2 (16% Vf)+Laves (FCC) (17% Vf) |
ONS-BCC-Ti20 |
Senkov and Woodward2121 Senkov ON, Woodward CF. Microstructure and properties of a refractory NbCrMo0.5Ta0.5TiZr. Mater Sci Eng A. 2011;529:311-20. |
13 |
Nb28.3-Ti24.5-V23-Zr24.2
|
Vac. arc melting and re-melted 5 times and casting |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h |
BCC+submicron ppts |
DBM-BCC-Ti24.5 |
Senkov et al.2222 Senkov ON, Senkova SV, Woodward C, Miracle DB. Low-density refractory multi-principal element alloys of CrNbTiVZr system: microstructure and phase analysis. Acta Mater. 2013;61(5):1545-57.,2323 Senkov ON, Senkova SV, Miracle DB, Woodward C. Mechanical properties of low-density refractory multi-principal element alloys of CrNbTiVZr system. Mater Sci Eng A. 2013;565:51-62. |
14 |
Nb22.6-Ti19.4-V37.2-Zr20.8
|
Vac. Arc Melting and re-melted 5 times and casting |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h |
BCC1+BCC2+BCC3 |
DBM-BCC-Ti19.4 |
Senkov et al.2222 Senkov ON, Senkova SV, Woodward C, Miracle DB. Low-density refractory multi-principal element alloys of CrNbTiVZr system: microstructure and phase analysis. Acta Mater. 2013;61(5):1545-57.,2323 Senkov ON, Senkova SV, Miracle DB, Woodward C. Mechanical properties of low-density refractory multi-principal element alloys of CrNbTiVZr system. Mater Sci Eng A. 2013;565:51-62. |
15 |
Cr24.6-Nb26.7-Ti23.9-Zr24.8
|
Vac. arc melting and re-melted 5 times and casting |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h |
BCC+Laves (ordered FCC) |
DBM-BCC-Ti23.9 |
Senkov et al.2222 Senkov ON, Senkova SV, Woodward C, Miracle DB. Low-density refractory multi-principal element alloys of CrNbTiVZr system: microstructure and phase analysis. Acta Mater. 2013;61(5):1545-57.,2323 Senkov ON, Senkova SV, Miracle DB, Woodward C. Mechanical properties of low-density refractory multi-principal element alloys of CrNbTiVZr system. Mater Sci Eng A. 2013;565:51-62. |
16 |
Cr20.2-Nb20-Ti19.9-V19.6-Zr20.3
|
Vac. arc melting and re-melted 5 times and casting |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h |
BCC+Laves (ordered FCC) |
DBM-BCC-Ti19.9 |
Senkov et al.2222 Senkov ON, Senkova SV, Woodward C, Miracle DB. Low-density refractory multi-principal element alloys of CrNbTiVZr system: microstructure and phase analysis. Acta Mater. 2013;61(5):1545-57.,2323 Senkov ON, Senkova SV, Miracle DB, Woodward C. Mechanical properties of low-density refractory multi-principal element alloys of CrNbTiVZr system. Mater Sci Eng A. 2013;565:51-62. |
17 |
Hf20-Mo20-Nb20-Ti20-Zr20
|
Vac. arc melting and re-melted 5 times and casting |
AC, Homogenized at 1100°C/10h/SC |
BCC (dendritic)-no ordered phases |
NNG-BCC-Ti20 |
Guo et al.2424 Guo NN, Wang L, Luo LS, Li XZ, Su YQ, Guo JJ, et al. Microstructure and mechanical properties of refractory MoNbHfZrTi high entropy alloy. Mater Des. 2015;81:87-94. |
18 |
Ta19.68-Nb18.93-Hf20.46-Zr21.23-Ti19.7
|
Vac. arc melting and casting |
AC, HIP at 1200°C/207 MPa/2h, 1200°C/24h (only homogenized) |
BCC (dendritic and nonuniform); equiaxed grains about 100μm bottom to 200 μm at the top |
ONS-BCC-Ti19.7 |
Senkov et al.2525 Senkov ON, Scott JM, Senkova SV, Meisenkothen F, Miracle DB, Woodward CF. Microstructure and elevated temperature properties of a refractory TaNbHfZrTi alloy. J Mater Sci. 2012;47(9):4062-74. |
19 |
Ti20-Zr20-Hf20-Nb20-V20
|
Vac. induction melting and cast |
As-Cast |
BCC+U (unknown intermetallic phase) |
EF-BCC-V20-Ti20 |
Fazakas et al.2626 Fazakas É, Zadorozhnyy V, Varga LK, Inoue A, Louzguine-Luzgin DV, Tian F, et al. Experimental and theoretical study of Ti20Zr20Hf20Nb20X20 (X 1/4 V or Cr) refractory high entropy alloys. Int J Refract Hard Met. 2014;47:131-8. |
20 |
Ti20-Zr20-Hf20-Nb20-Cr20
|
Vac. induction melting and cast |
As-Cast |
BCC+Laves (L1+L2) |
EF-BCC-Cr20-Ti20 |
Fazakas et al.2626 Fazakas É, Zadorozhnyy V, Varga LK, Inoue A, Louzguine-Luzgin DV, Tian F, et al. Experimental and theoretical study of Ti20Zr20Hf20Nb20X20 (X 1/4 V or Cr) refractory high entropy alloys. Int J Refract Hard Met. 2014;47:131-8. |