Microscale tensile test of galvannealed steel/aluminum dissimilar joint for estimation of intrinsic interfacial strength
| Autor: | Tomokazu Sano, Tomoki Matsuda, Masanao Munekane, Akio Hirose, Mitsuru Ohata |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Mechanical Engineering Alloy Metals and Alloys Intermetallic chemistry.chemical_element 02 engineering and technology Slip (materials science) engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Galvannealed chemistry Mechanics of Materials Aluminium 0103 physical sciences engineering General Materials Science Composite material 0210 nano-technology Spot welding Microscale chemistry Tensile testing |
| Zdroj: | Scripta Materialia. 186:196-201 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2020.05.022 |
| Popis: | We conduct high-resolution microscale tensile testing of galvannealed steel/Al–Mg–Si alloy dissimilar joints and find that the interfacial reaction layer is sufficiently strong to induce microscale aluminum fractures. The interfacial reaction layer with the 5-µm-thickness generated by friction stir spot welding contains Fe–Al intermetallic compounds (IMCs) with grain diameters of 10 nm to 2 µm, Zn–Mg compounds present around the Fe–Al IMC, and microscale defects within the layer. The microtensile test demonstrates the slip fracture of aluminum regardless of defects present within the reaction layer. The maximum stress withstood by the specimen is 309 MPa. |
| Databáze: | OpenAIRE |
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