Effect of heat treatment on tensile properties of friction stir welded joints of 2219-T6 aluminium alloy

Materials Science and Technology - Tập 22 Số 2 - Trang 237-241 - 2006
H. J. Liu, Y. C. Chen, Feng Ji

Tóm tắt

The effect of post-weld heat treatment (PWHT) on the tensile properties of friction stir welded (FSW) joints of 2219-T6 aluminium alloy was investigated. The PWHT was carried out at aging temperature of 165°C for 18 h. The mechanical properties of the joints were evaluated using tensile tests. The experimental results indicate that the PWHT significantly influences the tensile properties of the FSW joints. After the heat treatment, the tensile strength of the joints increases and the elongation at fracture of the joints decreases. The maximum tensile strength of the joints is equivalent to 89% of that of the base material. The fracture location characteristics of the heat treated joints are similar to those of the as welded joints. The defect free joints fracture in the heat affected zone on the retreating side and the joints with a void defect fracture in the weld zone on the advancing side. All of the experimental results can be explained by the hardness profiles and welding defects in the joints.

Từ khóa


Tài liệu tham khảo

Dawes C. J., 1996, Weld J, 75, 41

Dawes M. G., Karger S. A., Dickerson T. L., and Przyoatek J.: Proc. 2nd Int. Symp. on ‘Friction stir welding’, Gothenburg, Sweden, June 2000, TWI Ltd and IVF, Paper No. S2—P1.

10.1016/S0924-0136(03)00806-9

10.1016/S1359-6462(99)00226-2

Hashimoto T., Jyogan S., Nakada K., Kim Y. G., and Ushio M.: Proc. 1st Int. Symp. on ‘Friction stir welding’, Thousand Oaks, CA, USA, June 1999, TWI Ltd, Paper No. 59—P3.

10.1007/s11661-001-1038-1

Pao P. S., Lee E., Feng C. R., Jones H. N., and Moon D. W.: Proc. 4th Int. Symp. on ‘Friction stir welding’, Park City, UT, USA, May 2003, TWI Ltd, Page No. Post-8.

10.1023/A:1024970421082

10.1016/S1359-6462(97)00093-6

10.1007/s11661-999-0251-1

10.1007/s11661-998-0021-5

Backlund J.: Proc. Conf. Nalco 7, Cambridge, April 1998, Nalco,171–181.

Juricic C., Donne C. D., and Drebler U.: Proc. 3rd Int. Symp. on ‘Friction stir welding’, Kobe, Japan, September 2001, TWI Ltd, Page No. Post-8.

10.1016/S0921-5093(96)10546-3

10.1049/tpe.1984.0036

10.1179/136217103225005598

Leonard A. J., and Lockyer S. A.: Proc. 4th Int. Symp. on ‘Friction stir welding’, Salt Lake City, UT, USA, May 2003, TWI Ltd, Page No. 502—P1.

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Thông tin xuất bản

Materials Science and Technology

Tập 22 Số 2

237-241

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