Hot-Dip Aluminizing on AISI F55–UNS S32760 Super Duplex Stainless Steel Properties: Effect of Thermal Treatments
Abstract
:1. Introduction
2. Experimental Procedure
3. Theory and Calculation
3.1. Wetting Contact Angle
3.2. Diffusion
4. Results
5. Discussion
6. Conclusions
Author Contributions
Conflicts of Interest
References
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Sample | CD | LS | HS | A72 | A210 | A360 | S1300 | S1400 |
---|---|---|---|---|---|---|---|---|
Austenite (Vol. %) | 55.3 | 49.2 | 54.6 | 47.7 | 45.9 | 53.7 | 31.8 | 37.3 |
Error (Vol. %) | 2.3 | 0.9 | 1.8 | 3.4 | 2.5 | 2.7 | 2.5 | 1.7 |
Sample | Phase | Cr (%) | Mn (%) | Fe (%) | Ni (%) | Cu (%) | Mo (%) | W (%) |
---|---|---|---|---|---|---|---|---|
D | α | 27.01 | 0.44 | 60.46 | 5.91 | 0.55 | 4.74 | 0.89 |
γ | 24.13 | 0.63 | 62.14 | 8.52 | 0.78 | 3.19 | 0.61 | |
LS | α | 26.79 | 0.51 | 60.56 | 5.22 | 0.67 | 5.14 | 1.11 |
γ | 24.53 | 0.66 | 61.87 | 7.59 | 0.82 | 3.58 | 0.95 | |
HS | α | 26.21 | 0.58 | 60.45 | 6.03 | 0.72 | 4.97 | 1.04 |
γ | 24.33 | 0.82 | 62.27 | 7.13 | 0.93 | 3.78 | 0.74 | |
A72 | α | 24.18 | 0.76 | 58.50 | 5.31 | 1.07 | 8.12 | 2.06 |
γ | 22.87 | 0.77 | 60.10 | 9.05 | 1.11 | 4.28 | 1.82 | |
A210 | α | 26.60 | 0.65 | 58.61 | 4.80 | 0.54 | 7.15 | 1.65 |
γ | 24.50 | 0.57 | 61.15 | 7.95 | 0.71 | 3.65 | 1.48 | |
A360 | α | 26.13 | 0.48 | 57.37 | 4.48 | 1.36 | 8.49 | 1.69 |
γ | 24.76 | 0.32 | 61.75 | 7.71 | 0.53 | 3.52 | 1.42 | |
S1300 | α | 26.04 | 0.59 | 59.17 | 6.61 | 0.47 | 5.52 | 1.60 |
γ | 24.21 | 0.98 | 61.22 | 7.85 | 1.36 | 3.03 | 1.36 | |
S1400 | α | 25.64 | 0.70 | 59.56 | 6.99 | 0.82 | 4.77 | 1.53 |
γ | 24.38 | 0.88 | 61.19 | 7.41 | 0.81 | 3.89 | 1.44 |
Depth | Al (%) | Si (%) | Cr (%) | Mn (%) | Fe (%) | Ni (%) | Cu (%) | Mo (%) | W (%) |
---|---|---|---|---|---|---|---|---|---|
A-0 µm | 0.63 | 0.57 | 23.12 | 0.48 | 61.88 | 7.18 | 0.52 | 4.38 | 1.23 |
B-50 µm | 0.25 | 0.78 | 25.68 | 0.79 | 59.97 | 6.63 | 0.55 | 5.23 | 0.11 |
C-100 µm | 0.12 | 0.68 | 24.92 | 0.89 | 60.97 | 6.93 | 0.46 | 4.27 | 0.76 |
D-150 µm | 0.07 | 0.54 | 24.64 | 0.77 | 61.28 | 6.43 | 0.89 | 4.59 | 0.79 |
E-200 µm | - | 0.54 | 25.86 | 0.63 | 59.44 | 6.47 | 0.89 | 5.03 | 1.14 |
Analyzed Area | Al (at. %) | Si (at. %) | Cr (at. %) | Mn (at. %) | Fe (at. %) | Ni (at. %) | Cu (at. %) | Mo (at. %) | W (at. %) | Intermetallic Phase |
---|---|---|---|---|---|---|---|---|---|---|
A | 27.23 | 1.36 | 9.07 | 0.41 | 57.62 | 2.69 | - | 1.38 | 0.24 | Al-Me3 |
B | 33.90 | 2.70 | 10.36 | 0.06 | 29.74 | 12.92 | 1.81 | 8.41 | 0.10 | Al-Me2 |
C | 53.30 | 2.70 | 13.19 | 0.39 | 26.05 | 2.56 | 0.15 | 1.39 | 0.28 | Al-Me |
D | 88.23 | 0.14 | 4.37 | - | 6.44 | 0.46 | - | 0.27 | 0.09 | Al7-Me |
E | 78.04 | 1.07 | 6.60 | 0.21 | 12.05 | 1.20 | 0.25 | 0.50 | 0.07 | Al3-Me |
F | 86.48 | 0.15 | 4.37 | 0.03 | 7.70 | 0.51 | 0.23 | 0.44 | 0.09 | Al7-Me |
Alloying Elements Content | Phase | CD | LS | HS | A72 | A210 | A360 | S1300 | S1400 |
---|---|---|---|---|---|---|---|---|---|
Ni + Cr (wt. %) | α | 32.92 | 32.01 | 32.24 | 29.49 | 31.4 | 30.61 | 32.65 | 32.63 |
γ | 32.65 | 32.12 | 31.46 | 31.92 | 32.45 | 32.47 | 32.06 | 31.79 |
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Ciuffini, A.F.; Barella, S.; Di Cecca, C.; Gruttadauria, A.; Mombelli, D.; Mapelli, C. Hot-Dip Aluminizing on AISI F55–UNS S32760 Super Duplex Stainless Steel Properties: Effect of Thermal Treatments. Metals 2017, 7, 525. https://doi.org/10.3390/met7120525
Ciuffini AF, Barella S, Di Cecca C, Gruttadauria A, Mombelli D, Mapelli C. Hot-Dip Aluminizing on AISI F55–UNS S32760 Super Duplex Stainless Steel Properties: Effect of Thermal Treatments. Metals. 2017; 7(12):525. https://doi.org/10.3390/met7120525
Chicago/Turabian StyleCiuffini, Andrea Francesco, Silvia Barella, Cosmo Di Cecca, Andrea Gruttadauria, Davide Mombelli, and Carlo Mapelli. 2017. "Hot-Dip Aluminizing on AISI F55–UNS S32760 Super Duplex Stainless Steel Properties: Effect of Thermal Treatments" Metals 7, no. 12: 525. https://doi.org/10.3390/met7120525