TY - JOUR
T1 - The effect of vibration during friction stir welding on corrosion behavior, mechanical properties, and machining characteristics of stir zone
AU - Fouladi, Sajad
AU - Ghasemi, Amir H.
AU - Abbasi, Mahmoud
AU - Abedini, Morteza
AU - Khorasani, Amir Mahyar
AU - Gibson, Ian
PY - 2017/10/1
Y1 - 2017/10/1
N2 - Different methods have been applied to refine various characteristics of the zone (or nugget) obtained by friction stir welding (FSW). In the current research, joining components are vibrated normal to the weld line during FSW to refine the zone microstructure. This process is described as friction stir vibration welding (FSVW). The effect of FSVW on mechanical properties, corrosion behavior, and machining characteristics of the zone are investigated. Al5052 alloy specimens are welded using FSW and FSVW processes and their different characteristics are compared and discussed. The results show that the strength and ductility of the welded parts increase when the vibration is applied. The outcomes also show that corrosion resistance of the nugget for FSV-welded specimens is lower than FS welded samples, and machining force of the former specimens is higher than the latter ones. These are related to smaller grain size in the zone of FSV-welded specimens compared to FS welded parts. Smaller grain size leads to a greater volume fraction of grain boundaries and, correspondingly, higher strength and hardness, as well as lower corrosion resistance.
AB - Different methods have been applied to refine various characteristics of the zone (or nugget) obtained by friction stir welding (FSW). In the current research, joining components are vibrated normal to the weld line during FSW to refine the zone microstructure. This process is described as friction stir vibration welding (FSVW). The effect of FSVW on mechanical properties, corrosion behavior, and machining characteristics of the zone are investigated. Al5052 alloy specimens are welded using FSW and FSVW processes and their different characteristics are compared and discussed. The results show that the strength and ductility of the welded parts increase when the vibration is applied. The outcomes also show that corrosion resistance of the nugget for FSV-welded specimens is lower than FS welded samples, and machining force of the former specimens is higher than the latter ones. These are related to smaller grain size in the zone of FSV-welded specimens compared to FS welded parts. Smaller grain size leads to a greater volume fraction of grain boundaries and, correspondingly, higher strength and hardness, as well as lower corrosion resistance.
KW - Corrosion resistance
KW - Friction stir vibration welding
KW - Friction stir welding
KW - Machining
KW - Mechanical properties
UR - http://www.scopus.com/inward/record.url?scp=85031292579&partnerID=8YFLogxK
U2 - 10.3390/met7100421
DO - 10.3390/met7100421
M3 - Article
AN - SCOPUS:85031292579
SN - 2075-4701
VL - 7
JO - Metals
JF - Metals
IS - 10
M1 - 421
ER -