Part-through fracture toughness (K) and crack-tip opening displacement (CTOD) of welded joints of AA2014-T6 at low temperatures
| Autor: | Chuanjun Huang, Laifeng Li, Qinyan Pan |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Materials science
Tension (physics) Alloy technology industry and agriculture Crack tip opening displacement General Physics and Astronomy Welding respiratory system engineering.material law.invention Fusion welding Fracture toughness law Fracture (geology) engineering General Materials Science Displacement (orthopedic surgery) Composite material |
| Zdroj: | Cryogenics. 71:55-61 |
| ISSN: | 0011-2275 |
| DOI: | 10.1016/j.cryogenics.2015.05.009 |
| Popis: | The part-through fracture toughness ( K Ie ) and crack-tip opening displacement (CTOD, δ m ) of welded joints of aluminum alloy (AA) 20l4-T6, including the weld metal, the fusion zone (FZ), the heat-affected zone (HAZ), and the base material, were investigated at both liquid nitrogen temperature and liquid helium temperature with surface-crack tension (SCT) specimen and single-edge-notched bend (SENB) specimen respectively. Results indicate a conventional fusion welding process leads to formation of second-phase precipitations and inclusions, which cause significant reduction of fracture resistance at the weld metal and the FZ by fractographic analyses of fractured surface. |
| Databáze: | OpenAIRE |
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