Effect of surface modification by shot peening on cavitation erosion resistance of titanium alloy Ti-6Al-4V produced by DMLS method
Artykuł w czasopiśmie
MNiSW
100
Lista 2024
| Status: | |
| Autorzy: | Okuniewski Wojciech, Walczak Mariusz, Szala Mirosław, Chocyk Dariusz |
| Dyscypliny: | |
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| Rok wydania: | 2025 |
| Wersja dokumentu: | Elektroniczna |
| Język: | angielski |
| Wolumen/Tom: | 176 |
| Numer artykułu: | 109653 |
| Strony: | 1 - 16 |
| Impact Factor: | 5,7 |
| Web of Science® Times Cited: | 5 |
| Scopus® Cytowania: | 7 |
| Bazy: | Web of Science | Scopus |
| Efekt badań statutowych | NIE |
| Finansowanie: | The research was funded by the Lublin University of Technology, Mechanical Engineering Science Discipline, no. FD-20/IM-5/127. |
| Materiał konferencyjny: | NIE |
| Publikacja OA: | NIE |
| Abstrakty: | angielski |
| Ti6Al4V titanium alloy specimens were produced using direct metal laser sintering (DMLS) technology, and subsequent the surfaces of the specimens were subjected to shot peening with various peening media. Steel ball shot (CrNi), ceramic beads (ZrO2) and nutshells were used. The measurements of roughness and hardness profiles as well as cavitation erosion resistance of shot peened DMLS samples were performed. In order to detect phase composition, X-ray diffraction studies were conducted. In all treated samples a two-phase structure of α’+ β was identified, in which the proportion of the β-phase in the surface layer increased relative to the untreated core. SEM analysis was used for examination of surface morphology. Removal of additive manufacturing defects was observed, along with the remains of the embedded shot of steel and ceramic media. Roughness of the spherical-peened specimens decreased, while the angular- peened increased. Measurements of hardness profiles showed a significant depth of strength- ening effect for high impact energy shots. For the ceramic-peened specimens, strengthening was achieved at a depth of 140 μm. The best cavitation resistance was demonstrated by specimen treated with nutshells and it is comparable to the endurance of conventionally manufactured Ti6Al4V. The results demonstrated by other shot peened samples are not as good as for the un- treated surface. Degradation mechanism observed in Ti6Al4V specimens are fatigue-induced and is the results of the development of craters at the plastically deformed surface. |
