Evaluation of post-weld heat treatments to restore the corrosion resistance of friction stir welded aluminum alloy 7075-T73 vs. 7075-T6

Materials Science Forum

Volumn 539-543, Issue PART 4, 2007, Pages 3781-3788

  Widener, C A ^a   Burford, D A ^a   Kumar, B ^a   Talia, J E ^b   Tweedy, B ^a  

^a WICHITA STATE UNIVERSITY   (United States)

^b Wichita State University   (United States)

Author keywords

Aluminum, 7075; Corrosion; Electrical conductivity; Exfoliation; Fatigue crack propagation; Friction stir welding, FSW; Heat treatment; Post weld artificial aging, PWAA; Strength; Temper

Indexed keywords

CORROSION RESISTANCE; FATIGUE CRACK PROPAGATION; HEAT TREATMENT; WELDING;

ELECTRICAL CONDUCTIVITY; FRICTION STIR WELDING; POST-WELD ARTIFICIAL AGING;

ALUMINUM ALLOYS;

EID: 38349020231     PISSN: 02555476     EISSN: 16629752     Source Type: Book Series    
DOI: 10.4028/0-87849-428-6.3781     Document Type: Conference Paper

References (22)

1. Thomas, W.M., et al., "Friction Stir Welding," U.S. Patent No. 5,460,317, October, 24, 1995.
2. Klsestrup Kristensen, J. et al. "Properties of Friction Stir Welded Joints in Aluminum Alloys 2024, 5083, 6082/6060 and 7075," 5th Intl. Friction Stir Welding Symposium, September, 2004.
3. Heat Treatment of Wrought Aluminum Alloy Parts, Aerospace Material Specification, AMS 2770G, April, 2003.
4. Nelson, T.W., Steel, R.J., and Arbegast, W.J., "Investigation of Heat Treatment on the Properties of Friction Stir Welds," ASM International Aeromat Conference Presentation, 2001.
5. Leonard, A.J., "Corrosion Resistance of Friction Stir Welds in Aluminum Alloys 2014A-T651 and 7075-T651," 2nd International Friction Stir Welding Symposium, 26-28 June, 2000.
6. Anonymous. "Corrective Measures to Restore Corrosion Resistance Following Friction Stir Welding," Office of Naval Research, Report no. A580234, Rockwell Scientific, 2004.
7. Kumar, B. et al. "Applicability of FSW for Aircraft Applications," 46th AIAA SDM Conf., 2005.
8. Paglia, C,S. et al. "Corrosion and Environmentally Assisted Cracking Behavior of High Strength Al Alloys FSW: 7075-T651vs.7050-T7451," FSW and Processing II, 2003, pp. 65-75.
9. Lumsden, J., Mahoney, M., and Pollock, G., "Stress Corrosion Susceptibility in 7050-T7451 Aluminum Following FSW," 1st International Friction Stir Welding Symposium, June, 1999.
10. Merati, A., Sarda, K., Raizenne, D., Dalle Done, C., "Improving Corrosion Properties of Friction Stir Welded Al Alloys by Localized Heat Treatment," FSW and Processing II, 2003, pp. 77-90.
11. Li, Z.X., Arbegast, W.J., Wilson, A.L., Moran, J., and Liu, J., "Post-Weld Aging of Friction Stir Welded 7249 Extrusions," Trends in Welding Research Conference, 15-19 April, 2002, pp. 312-317.
12. Pao, P.S., Gill, S.J., Feng, C.R., and Sankaran, K.K., "Effects of Weld Microstructure on Fatigue Crack Growth in Friction Stir Welded Al 7050," TMS Aluminum 2001, 2001, pp. 265-279.
13. Sankaran, K.K., Smith, H.L., and Jata, K., "Pitting Corrosion Behavior of Friction Stir Welded 7050-T74 Aluminum Alloy," Trends in Welding Research, April, 2002, pp. 284-286.
14. Paglia, C.S. et al. "Investigating Post-weld Heat Treatments to Increase the Corrosion and Environmental Cracking Behavior of 7075-T6 FSW," Trends in Welding Research, 2002, p. 279-283.
15. Lumsden, J., Pollock, G., and Mahoney, M., "Effect of Post Weld Heat Treatments on the Corrosion Properties of FSW AA7050," FSW and Processing II, TMS, March, 2003, pp. 99-106.
16. Dunlavy, M., and Jata, K.V., "High-Cycle Corrosion Fatigue of Friction Stir Welded 7050-T7451," Friction Stir Welding and Processing II, 2-6 March, 2003, pp. 91-98.
17. Dawes, M.G., Karger, S.A., Dickerson, T.L., and Pryzdatek, J., "Strength and Fracture Toughness of FSW in Al Alloys," 2nd Intl. Friction Stir Welding Symposium, 26-28 June, 2000.
18. James, M., Mahoney, M., and Waldron, D., "Residual Stress Measurements in Friction Stir Welded Aluminum Alloys," 1st International Friction Stir Welding Symposium, 14-16 June, 1999.
19. Dalle Donne, C., Biallas, G., Ghindini, T., Raimbeaux, G., "Effect of Weld Imperfections and Residual Stresses on FCP in FSW Joints," 2nd International Symposium on FSW, 8 June, 2000.
20. John, R., and Jata, K.V., "Residual Stress Effects on Near-Threshold Fatigue Crack Growth in Friction Stir Welds," Friction Stir Welding and Processing, 4-8 November, 2001, pp. 57-69.
21. Bussu, G., and Irving, P.E., "The Role of Residual Stress and HAZ Properties on FCP in Friction Stir Welded 2024-T351 Al Joints," Intl. Jrnl. Fatigue, v. 25, n. 1, Jan., 2003, pp. 93-104.
22. Ferrer, C.P. et al. "Improvements in Strength and SCC Properties in Al Alloy 7075 via Low-Temperature RRA Heat Treatments," Corrosion, vol. 59, no. 6, June, 2003, pp. 520-528.