| 2001 №03 (03) | 2001 №03 (05) |
The Paton Welding Journal, 2001, #3, 18-22 pages
Low-cycle fatigue of welded butt joints made from alloy AMg6 in inert atmosphere
V.A. Shonin, A.G. Poklyatsky
E.O. Paton Electric Welding Institute of the NASU 11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine.Abstract
Results of experimental investigations of a low-cycle fatigue resistance of butt joints made from 6 mm thick AMg6 alloy at axial from-zero loading depending on the geometry of weld convexity, stipulated by the TIG and MIG welding methods, are presented. The feasibility of evaluation of fatigue limit of butt joints by parameter of the convexity height-weld width ratio which has a good correlation with an estimated stress concentration factor at the weld boundaries is proved
Keywords: aluminium alloys, shielded-gas welding, non¬consumable and consumable electrodes, butt joint, fatigue resistance, weld convexity, weld flaws, stress concentration
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