About this Abstract |
| Meeting |
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
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| Symposium
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11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
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| Presentation Title |
Improvement of the Fatigue Strength Through Machining Process in Stainless Steel Welds |
| Author(s) |
Carolina Payares-Asprino, Christian Felix Martínez , Ulises Sánchez Santana, Edgar Miranda Paniagua |
| On-Site Speaker (Planned) |
Carolina Payares-Asprino |
| Abstract Scope |
Welds are sensitive to fatigue failure due to cyclic loading and fatigue crack propagation. Fatigue life of the welding can be increased by machining the weld bead to reduce from higher to lower tensile residual stress, and compressive residual stresses in the weld bead are removed. This research analyses the fatigue strength developed by a robotic welding process and subsequent machining of the weld bead through a control numerical process in duplex stainless steel 2205 (DSS). Two main variables will be studied: i) heat input as a welding variable and ii) chip cross-sectional area as a machining variable. Results showed that X-ray diffraction measurement along the center thickness of the machined welded plates reveals compressive residual stress near the adjacent weld region, and the fatigue properties of the machined weldment are enhanced by 80% at 550 MPa and 92% at 350 MPa compared to the DSS welds with the weld bead. |
| Proceedings Inclusion? |
Undecided |