A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Plastic flow behaviour and formability of friction stir welded joints in AZ31 thin sheets obtained using the “pinless” tool configuration
Highlights ► The post-welding formability of FSWed thin AZ31 sheets were studied in temperature. ► A “pinless” tool configuration was used during the FSW process. ► Both UTS and ductility of FSWed joint are generally lower than the BM ones. ► At the high T and low strain rate, joints and BM show similar peak flow stresses. ► Formability of the FSWed joint is lower than that of the BM.
Abstract The plastic flow behaviour and formability of friction stir welded AZ31 magnesium alloy sheets, 1.5mm thick, were widely investigated. Flow curves were obtained in extended ranges of temperature (250–350°C) and strain rate (10−3–10−1 s−1) by means of uniaxial tensile tests; furthermore, forming limit curves were determined using the hemispherical punch method at 350°C, with a constant crosshead speed of 0.1mm/s. The results were compared with those obtained on the base material, under the same experimental conditions. It has shown that the flow stress and ductility levels of joints are lower than those of base material; however, as temperature increases and strain rate decreases, the peak flow stress of the welded joint tends to be similar to the one of the base alloy. Finally, formability of the friction stir welded blanks, evaluated in terms of forming limit curves, is lower than the one of the base material.
Plastic flow behaviour and formability of friction stir welded joints in AZ31 thin sheets obtained using the “pinless” tool configuration
Highlights ► The post-welding formability of FSWed thin AZ31 sheets were studied in temperature. ► A “pinless” tool configuration was used during the FSW process. ► Both UTS and ductility of FSWed joint are generally lower than the BM ones. ► At the high T and low strain rate, joints and BM show similar peak flow stresses. ► Formability of the FSWed joint is lower than that of the BM.
Abstract The plastic flow behaviour and formability of friction stir welded AZ31 magnesium alloy sheets, 1.5mm thick, were widely investigated. Flow curves were obtained in extended ranges of temperature (250–350°C) and strain rate (10−3–10−1 s−1) by means of uniaxial tensile tests; furthermore, forming limit curves were determined using the hemispherical punch method at 350°C, with a constant crosshead speed of 0.1mm/s. The results were compared with those obtained on the base material, under the same experimental conditions. It has shown that the flow stress and ductility levels of joints are lower than those of base material; however, as temperature increases and strain rate decreases, the peak flow stress of the welded joint tends to be similar to the one of the base alloy. Finally, formability of the friction stir welded blanks, evaluated in terms of forming limit curves, is lower than the one of the base material.
Plastic flow behaviour and formability of friction stir welded joints in AZ31 thin sheets obtained using the “pinless” tool configuration
Forcellese, A. (author) / Simoncini, M. (author)
2011-11-08
7 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2012
| British Library Online Contents | 2012
Formability of Friction Stir Welded AZ31 Magnesium Alloy Sheets
| British Library Online Contents | 2010
| British Library Online Contents | 2014