Formation Mechanism of Layered Structure Near Fusion Boundary in Dissimilar-Filler Welding of Aluminum Alloys
| Autor: | Qingyu Zhang, Bo Zhang, Minqi Sheng, Qipeng Dong, Xinzhong Li, Hiromi Nagaumi, Xiaonan Wang, Xiaming Chen |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Fusion Filler (packaging) Structural material Materials science Metallurgy 0211 other engineering and technologies Metals and Alloys chemistry.chemical_element Boundary (topology) 02 engineering and technology Welding Condensed Matter Physics Microstructure 01 natural sciences law.invention Mechanism (engineering) chemistry Mechanics of Materials Aluminium law 0103 physical sciences 021102 mining & metallurgy |
| Zdroj: | Metallurgical and Materials Transactions A. 52:1174-1179 |
| ISSN: | 1543-1940 1073-5623 |
| DOI: | 10.1007/s11661-021-06146-3 |
| Popis: | This study presents the formation mechanism of a layered structure consisting of coherent cellular and columnar solidification microstructure accompanied with the macrosegregation in aluminum dissimilar-filler welding. The filler-depleted zone resulted from the incomplete mixing of the solute; moreover, it solidifies before the surrounding mixed zone, wherein the subsequent dendritic growth is hindered by the pre-solidified microstructure. This solidification sequence leads to a layered solidification microstructure and segregation patterns. |
| Databáze: | OpenAIRE |
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