- Tytuł:
- Properties of AlMg3 aluminium alloy joints welded by electron beam melting
- Autorzy:
- Czechowski, Mirosław
- Powiązania:
- https://bibliotekanauki.pl/articles/246028.pdf
- Data publikacji:
- 2019
- Wydawca:
- Instytut Techniczny Wojsk Lotniczych
- Tematy:
-
electron beam welding
aluminium alloy
stress corrosion - Opis:
- Electron beam welding, called electron welding consists in penetrating the elements being welded with heat obtained from the elements’ bombardment in vacuum with concentrated electron beam of high energy. Concentration of the electron beam of high kinetic energy in a very small space results in generating the heat of high concentration causing melting of material in high depth. During the metal melting the electron beam makes a narrow weld of little heat affected zone (HAZ). This paper presents the test results on selection of parameters of electron beam welding of 12 mm thickness sheets of AlMg3 aluminum alloy. The beam electron melting through was carried out in vacuum by means of the welding machine WS-15 KW/100 KV. Before melting, the sheets were degreased in tetrachloroethylene and oxides were removed with 15% solution Na2Co3. The influence of electron beam melting through of sheets on their mechanical properties was tested as well as resistance to stress corrosion cracking and resistance to corrosion in fast seawater flow (10 m/s). The slow strain rate stress corrosion tests in the air and artificial seawater were performed. It was found that electron beam melting through of the AlMg3 alloy does not decrease the mechanical properties in comparison to the native material. The crack during the static tension test had ductile character and proceeded in the native material. AlMg3 alloy melting with electron beam shows a very good stress corrosion resistance.
- Źródło:
-
Journal of KONES; 2019, 26, 2; 15-20
1231-4005
2354-0133 - Pojawia się w:
- Journal of KONES
- Dostawca treści:
- Biblioteka Nauki
Artykuł