| Title |
Investigation on low-cycle fatigue of aluminium alloy welded joints / |
| Authors |
Kilikevičius, S ; Česnavičius, R ; Krasauskas, P ; Dundulis, R ; Madhusudanan, N. Sai |
| DOI |
10.5755/j01.mech.22.5.15304 |
| Full Text |
|
| Is Part of |
Mechanika.. Kaunas : KTU. 2016, vol. 22, no. 5, p. 354-358.. ISSN 1392-1207. eISSN 2029-6983 |
| Keywords [eng] |
FSW ; TIG ; welded joints ; hysteresis loop ; accumulated plastic strain ; stress control ; low-cycle fatigue |
| Abstract [eng] |
In this paper, the low-cycle unidirectional stress controlled (R=0) loading experiments were carried out on AW 1050 aluminium alloy friction stir welded (FSW) and tungsten inert gas welded (TIG) specimens in order to com-pare the influence of the welding method on the durability of welded structures. It was found that, under stress controlled unidirec-tional stress (R=0) loading, the material AW 1050 is cycli-cally stable as the semicycle hysteresis loop width remains constant with increase in number of cycles. The same cycli-cal properties remain for AW 1050 aluminium alloy FSW and TIG welded joints. All the specimens demonstrated a tendency to accumulate the plastic strain. The stress con-trolled low-cycle fatigue testing enabled to conclude that the AW 1050 not welded specimens have the highest fatigue life. Among the welded joints, the FSW ones have a better fatigue life. |
| Published |
Kaunas : KTU |
| Type |
Journal article |
| Language |
English |
| Publication date |
2016 |
| CC license |
|
