A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Effect of welding speed on microstructures and mechanical properties of underwater friction stir welded 2219 aluminum alloy
Abstract Underwater friction stir welding (underwater FSW) has been demonstrated to be available for the strength improvement of normal FSW joints. In the present study, a 2219 aluminum alloy was underwater friction stir welded at a fixed rotation speed of 800rpm and various welding speeds ranging from 50 to 200mm/min in order to clarify the effect of welding speed on the performance of underwater friction stir welded joint. The results revealed that the precipitate deterioration in the thermal mechanically affected zone and the heat affected zone is weakened with the increase of welding speed, leading to a narrowing of softening region and an increase in lowest hardness value. Tensile strength firstly increases with the welding speed but dramatically decreases at the welding speed of 200mm/min owing to the occurrence of groove defect. During tensile test, the joint welded at a lower welding speed is fractured in the heat affected zone on the retreating side. While at higher welding speed, the defect-free joint is fractured in the thermal mechanically affected zone on the advancing side.
Effect of welding speed on microstructures and mechanical properties of underwater friction stir welded 2219 aluminum alloy
Abstract Underwater friction stir welding (underwater FSW) has been demonstrated to be available for the strength improvement of normal FSW joints. In the present study, a 2219 aluminum alloy was underwater friction stir welded at a fixed rotation speed of 800rpm and various welding speeds ranging from 50 to 200mm/min in order to clarify the effect of welding speed on the performance of underwater friction stir welded joint. The results revealed that the precipitate deterioration in the thermal mechanically affected zone and the heat affected zone is weakened with the increase of welding speed, leading to a narrowing of softening region and an increase in lowest hardness value. Tensile strength firstly increases with the welding speed but dramatically decreases at the welding speed of 200mm/min owing to the occurrence of groove defect. During tensile test, the joint welded at a lower welding speed is fractured in the heat affected zone on the retreating side. While at higher welding speed, the defect-free joint is fractured in the thermal mechanically affected zone on the advancing side.
Effect of welding speed on microstructures and mechanical properties of underwater friction stir welded 2219 aluminum alloy
Liu, H.J. (author) / Zhang, H.J. (author) / Yu, L. (author)
2010-09-27
6 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2011
Microstructures and Mechanical Properties of Double-Friction Stir Welded 2219 Al Alloy
| British Library Online Contents | 2008
Microstructure and mechanical properties of friction stir welded joints in 2219-T6 aluminum alloy
| British Library Online Contents | 2009
| British Library Online Contents | 2009