- Tytuł:
- Low - cycle fatigue of Al-Mg alloy joints
- Autorzy:
- Czechowski, M.
- Powiązania:
- https://bibliotekanauki.pl/articles/247917.pdf
- Data publikacji:
- 2012
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
corrosion fatigue
Al-Mg alloy
MIG welding - Opis:
- This article presents the results of the low-cycle fatigue tests of AW-5059 Alustar alloy. Gas metallic welding in argon arc shield was used. Metallographic analysis of bonds showed a proper structural construction MIG welded 5059 aluminum alloy. The low-cycle fatigue tests were carried out in the air and artificial seawater (3.5% water solution NaCl), with stable amplitude of stress value. The stresses were changed in the symmetric cycle (the stress ratio was R = -1) with constant strain rate of 5mm/min and the frequencies oscillating between 0.08-0.2 Hz. During the tests the following parameters was observed: number of cycles until the specimen's destruction, upper and lower extreme values of force and strain for the selected cycles, duration-time of the test and frequency. Analysis of specimens fracture surfaces was performed with scanning electron microscope (SEM) Philips XL30. In case of the specimens exposed in 3,5% water solution NaCl the fatigue durability is lower than the durability of specimens tested in the air. The article depicts the changes in total strain amplitude Iac [mm] depending on number of cycles [N] obtained in the tests with ia=const and the low-cycle fatigue resistance for the welded Alustar alloy. Original value are received results of the low-cycle fatigue tests of AW-5059 Alustar alloy welded by MIG
- Źródło:
-
Journal of KONES; 2012, 19, 2; 103-108
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki