Residual stresses distribution, correlated with bending tests, within explosively welded Ti gr. 2/A1050 bimetals
| Autor: | Karel Saksl, Z. Kania, Joanna Wojewoda-Budka, D. Daisenberger, Lucjan Sniezek, K. Sulova, Zygmunt Szulc, Marcin Wachowski, Miloš Fejerčák, D.M. Fronczek, Štefan Michalik, M. Šuliková, Janusz Torzewski, Andrea Lachová, Robert Chulist |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Three point flexural test Mechanical Engineering 02 engineering and technology Bending Welding 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Bimetal law.invention Mechanics of Materials Residual stress law 0103 physical sciences General Materials Science Texture (crystalline) Compression (geology) Composite material 0210 nano-technology Crystal twinning |
| Zdroj: | Materials Characterization. 144:461-468 |
| ISSN: | 1044-5803 |
| Popis: | Synchrotron radiation and XRD2 method were used to investigate the residual stress distribution before and after three point bending tests within an explosively welded composite composed of two light metals, namely: Ti gr. 2 and A1050. The analysis has shown that the bimetal is slightly affected by the explosive welding process since negative sign values of stress tensor were detected only in the immediate vicinity of interface of Ti gr. 2 characterized by a width of about 0.25 mm. Upon bending higher negative compression stresses are detected in this area as the σ11 value changes from −500 MPa to −1200 MPa. Additionally, the analysis of microstructure has revealed significant changes in twins morphology with primary and conjugate twinning before and after bending, respectively. However, the compressive twinning was the dominant system in both cases. Bending has changed the initial bimodal texture developing more spread basal components towards the transverse direction. The sample surface has been also significantly affected as the presence of compressive residual stress (−500 MPa) after bending was measured. |
| Databáze: | OpenAIRE |
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