Evaluation of Microstructural and Mechanical Behavior of AHSS CP780 Steel Welded by GMAW-Pulsed and GMAW-Pulsed-Brazing Processes
Abstract
:1. Introduction
2. Materials and Methods
2.1. Microstructural Characterization
2.2. Mechanical Evaluation
2.3. Free Fall Impact Tests
- m is the mass applied during the test (kg).
- g is the gravitational constant.
- h is the height where the mass was free leaving.
- v is the velocity of the mass reached during the test.
3. Results and Discussion
3.1. Microstructural Characterization of Base Metal
3.2. Microstructural Characterization of Lap Weldments
3.3. Mechanical Testing
3.4. Free Fall Testing
4. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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CP 780 | C | Mn | Ti | P | Cr | S | Si | Nb | Al |
0.101 | 1.084 | 0.132 | 0.0040 | 0.927 | 0.0038 | 0.495 | 0.015 | 0.017 | |
ER80S-D2 | C | Mn | Si | S | P | Ni | Mo | Cu | Fe |
0.12 | 2.10 | 0.80 | 0.025 | 0.025 | 0.15 | 0.60 | 0.5 | Bal. | |
ERCuAl-2 | Al | Fe | Si | Sn | Pb | Ni | Mn | P | Cu |
9.13 | 0.92 | 0.0038 | 0.0038 | 0.0015 | 0.15 | 0.0044 | 0.0016 | Bal. |
Welding Variables | GMAW-P | GMAW-P-Brazing | ||
---|---|---|---|---|
Electrode | ER80S-D2 | ERCuAl-A2 | ||
Condition | C1 | C2 | C1 | C2 |
Current (A) | 99 | 129 | 75 | 87 |
Voltage (V) | 32.2 | 29 | 29.5 | 29.7 |
Welding speed (mm/s) | 7.5 | 7.5 | 7.5 | 7.5 |
Gas flow rate (L/mm) | 15 | 15 | 15 | 15 |
Heat input (kJ/mm) | 0.361 | 0.423 | 0.250 | 0.292 |
Stick-out (mm) | 12 | 12 | 12 | 12 |
Wire feed speed (m/min) | 3.3 | 3.7 | 4.5 | 5 |
Working angle (°) | 20 | 20 | 20 | 20 |
Sample | Load to Failure (N) | Failure Zone |
---|---|---|
C1 | 6640.22 | Fusion zone |
C2 | 5290.56 | Fusion zone |
C1-B | 6901.80 | Fusion zone |
C2-B | 9639.20 | Fusion zone |
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Romero-Orozco, A.J.; Taha-Tijerina, J.J.; De Luna-Alanís, R.; López-Morelos, V.H.; Ramírez-López, M.d.C.; Salazar-Martínez, M.; Curiel-López, F.F. Evaluation of Microstructural and Mechanical Behavior of AHSS CP780 Steel Welded by GMAW-Pulsed and GMAW-Pulsed-Brazing Processes. Metals 2022, 12, 530. https://doi.org/10.3390/met12030530
Romero-Orozco AJ, Taha-Tijerina JJ, De Luna-Alanís R, López-Morelos VH, Ramírez-López MdC, Salazar-Martínez M, Curiel-López FF. Evaluation of Microstructural and Mechanical Behavior of AHSS CP780 Steel Welded by GMAW-Pulsed and GMAW-Pulsed-Brazing Processes. Metals. 2022; 12(3):530. https://doi.org/10.3390/met12030530
Chicago/Turabian StyleRomero-Orozco, Alan Jadir, José Jaime Taha-Tijerina, Rene De Luna-Alanís, Victor Hugo López-Morelos, María del Carmen Ramírez-López, Melchor Salazar-Martínez, and Francisco Fernando Curiel-López. 2022. "Evaluation of Microstructural and Mechanical Behavior of AHSS CP780 Steel Welded by GMAW-Pulsed and GMAW-Pulsed-Brazing Processes" Metals 12, no. 3: 530. https://doi.org/10.3390/met12030530