Table 3 The calculated values of parameters (ΔHmix, ΔSmix, δ, Ω, Tm, VEC and Δχ) for the investigated alloys.

From: Microstructure evolution and catalytic activity of AlCo1−xFeNiTiMox high entropy alloys fabricated by powder metallurgy route

Samples

ΔHmix*, kJ/mol

ΔSmix, J/(molK)

δ, %

Ω-

Tm, K

VEC

Δχ

ΔGmix, kJ/mol

Expected phase formation

Structure

AlCoFeNiTi

-26.40

13.38

7.46

0.83

1636

6.80

0.15

-39.5

IM

BCC

AlCo0.9FeNiTiMo0.1

-26.00

13.92

7.43

0.89

1659

6.74

0.16

-40.0

IM

BCC

AlCo0.75FeNiTiMo0.25

-25.35

14.32

7.33

0.96

1693

6.65

0.17

-39.9

IM

BCC

AlCo0.5FeNiTiMo0.5

-24.20

14.53

7.18

0.98

1749

6.50

0.19

-39.5

IM

BCC

AlCo0.25FeNiTiMo0.75

-23.11

14.32

7.01

1.01

1805

6.35

0.21

-38.6

IM

BCC

AlCo0.0FeNiTiMo1.0

-21.60

13.38

6.80

1.00

1862

6.20

0.22

-36.5

SS

BCC

  1. IM intermetallic, SS solid solution.
  2. *The binary mixing enthalpies in ternary amorphous systems used in the calculation can be found in Ref38.
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