Acta Metallurgica Sinica (English Letters) ›› 2020, Vol. 33 ›› Issue (7): 957-967.DOI: 10.1007/s40195-020-01019-x
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Yunhai Su1(), Xuewei Liang1, Yunqi Liu1, Zhiyong Dai1
Received:
2019-09-10
Revised:
2019-12-01
Online:
2020-07-10
Published:
2020-07-10
Contact:
Yunhai Su
Yunhai Su, Xuewei Liang, Yunqi Liu, Zhiyong Dai. Effect of Ti Addition on the Microstructure and Property of FeAlCuCrNiMo0.6 High-Entropy Alloy[J]. Acta Metallurgica Sinica (English Letters), 2020, 33(7): 957-967.
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C | Si | Mn | S | P | Fe | |
---|---|---|---|---|---|---|
H08A | 0.03 | 0.01 | 0.30-0.55 | 0.013 | 0.011 | Bal |
Substrate | 0.20 | 0.35 | 0.70 | 0.045 | 0.045 | Bal |
Table 1 Compositions of H08A steel strip and substrate (wt%)
C | Si | Mn | S | P | Fe | |
---|---|---|---|---|---|---|
H08A | 0.03 | 0.01 | 0.30-0.55 | 0.013 | 0.011 | Bal |
Substrate | 0.20 | 0.35 | 0.70 | 0.045 | 0.045 | Bal |
Welding current (A) | Arc voltage (V) | Welding speed (cm/min) | Gas flow (L/min) |
---|---|---|---|
160 | 24 | 8 | 12 |
Table 2 Welding process parameters
Welding current (A) | Arc voltage (V) | Welding speed (cm/min) | Gas flow (L/min) |
---|---|---|---|
160 | 24 | 8 | 12 |
Element | ΔSmix (J·mol-1 K-1) | Δ (%) | ΔHmix (kJ·mol-1) | VEC |
---|---|---|---|---|
Ti0.2 | 15.516 | 5.74 | - 5.65 | 7.31 |
Ti0.6 | 15.991 | 6.16 | - 9.12 | 7.10 |
Ti0.8 | 16.063 | 6.32 | - 10.52 | 7.00 |
Ti1.0 | 16.075 | 6.44 | - 11.73 | 6.91 |
Table 3 Theoretical parameter values
Element | ΔSmix (J·mol-1 K-1) | Δ (%) | ΔHmix (kJ·mol-1) | VEC |
---|---|---|---|---|
Ti0.2 | 15.516 | 5.74 | - 5.65 | 7.31 |
Ti0.6 | 15.991 | 6.16 | - 9.12 | 7.10 |
Ti0.8 | 16.063 | 6.32 | - 10.52 | 7.00 |
Ti1.0 | 16.075 | 6.44 | - 11.73 | 6.91 |
Alloys | Region | Fe | Al | Cu | Cr | Ni | Mo | Ti | C |
---|---|---|---|---|---|---|---|---|---|
Ti0.2 | Precipitates | 25.99 s | 7.35 | 2.70 | 1.56 | 2.35 | 0.69 | 48.29 | 11.07 |
DR | 70.11 | 2.39 | 5.83 | 9.35 | 9.60 | 1.12 | 1.60 | - | |
ID | 63.92 | 3.30 | 10.63 | 7.24 | 7.47 | 4.08 | 55.73 | - | |
Ti0.6 | Precipitates | 14.17 | 7.82 | 2.57 | 1.72 | 2.21 | 0.79 | 3.36 | 14.99 |
DR | 69.57 | 2.24 | 4.21 | 10.32 | 9.56 | 1.56 | 2.54 | - | |
ID | 57.30 | 3.37 | 13.02 | 8.12 | 7.69 | 4.14 | 6.36 | - | |
Ti0.8 | Precipitates | 10.92 | 8.53 | 1.65 | 1.74 | 1.34 | 0.47 | 62.47 | 12.86 |
DR | 67.11 | 2.88 | 6.42 | 10.33 | 9.13 | 1.43 | 2.70 | - | |
ID | 62.01 | 3.16 | 9.15 | 8.06 | 7.49 | 3.98 | 6.15 | - |
Table 4 Chemical compositions of FeAlCuCrNiMo0.6Tix HEAs surfacing layer at various regions in Fig. 3 (at.%)
Alloys | Region | Fe | Al | Cu | Cr | Ni | Mo | Ti | C |
---|---|---|---|---|---|---|---|---|---|
Ti0.2 | Precipitates | 25.99 s | 7.35 | 2.70 | 1.56 | 2.35 | 0.69 | 48.29 | 11.07 |
DR | 70.11 | 2.39 | 5.83 | 9.35 | 9.60 | 1.12 | 1.60 | - | |
ID | 63.92 | 3.30 | 10.63 | 7.24 | 7.47 | 4.08 | 55.73 | - | |
Ti0.6 | Precipitates | 14.17 | 7.82 | 2.57 | 1.72 | 2.21 | 0.79 | 3.36 | 14.99 |
DR | 69.57 | 2.24 | 4.21 | 10.32 | 9.56 | 1.56 | 2.54 | - | |
ID | 57.30 | 3.37 | 13.02 | 8.12 | 7.69 | 4.14 | 6.36 | - | |
Ti0.8 | Precipitates | 10.92 | 8.53 | 1.65 | 1.74 | 1.34 | 0.47 | 62.47 | 12.86 |
DR | 67.11 | 2.88 | 6.42 | 10.33 | 9.13 | 1.43 | 2.70 | - | |
ID | 62.01 | 3.16 | 9.15 | 8.06 | 7.49 | 3.98 | 6.15 | - |
HEA surfacing layer | Self-corrosion potential (V) | Self-corrosion current density (mA/cm2) |
---|---|---|
304 Stainless steel | - 0.9008 | 2.3549 × 10-3 |
Ti0.2 | - 0.9437 | 1.9474 × 10-3 |
Ti0.6 | - 1.03409 | 2.1276 × 10-4 |
Ti0.8 | - 1.03038 | 3.9298 × 10-4 |
Table 5 Self-corrosion potential and current density of FeAlCuCrNiMo0.6Tix HEAs surfacing layer
HEA surfacing layer | Self-corrosion potential (V) | Self-corrosion current density (mA/cm2) |
---|---|---|
304 Stainless steel | - 0.9008 | 2.3549 × 10-3 |
Ti0.2 | - 0.9437 | 1.9474 × 10-3 |
Ti0.6 | - 1.03409 | 2.1276 × 10-4 |
Ti0.8 | - 1.03038 | 3.9298 × 10-4 |
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