Abstract
The mechanism of tool penetration during friction stir spot welding of Al-alloy and Mg-alloy sheet materials is investigated and is explained as a progression of wear events, from mild wear to severe wear and then to melt wear in material beneath the base of the rotating pin. Melt wear can also occur under the rotating tool shoulder provided that sufficient penetration of the upper sheet occurs during the spot welding operation.
The highest temperatures attained during FSW spot welding of Al 6111 and AZ91 base materials are close to the solidus temperatures of each base material and correspond with 0.94T s (Al 6111) and 0.99 T s (AZ91) where T s is the solidus temperature of the material in degrees Kelvin.
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References
C. SCHILLING, A. VON STROMBECK, J. F. DOS SANTOS and N. VON HEESEN, in Proceedings of the 2nd International Conf. Friction Stir Welding, TWI, June 2000.
P.-C. LIN, S.-H. LIN, J. PAN, T. PAN, J. M. NICHOLSON and M. A. GARMAN, SAE Technical Series, 2004-01-1330.
O. T. MIDLING and G. RøRVIK, in Proceedings of the 1st International Symposium on Friction Stir Welding, TWI, June 1999.
M. RUSSELL and H. R. SHERCLIFF, in Proceedings of the 1st International Symposium on Friction Stir Welding, TWI, June 1999.
A. GERLICH, P. SU, T. H. NORTH and G. J. BENDZSAK, in Proceedings of the 3rd Internat. Conf. Advanced Materials Processing, November 2004.
A. GERLICH, P. SU, T. H. NORTH, “Magnesium Technology 2005”, edited by N. R. Neelameggham, H. I. Kaplan and B. R. Powell (TMS), February 2005.
A. GERLICH, P. SU and T. H. NORTH, “Friction Stir Welding and Processing III”, edited by K. V. Jata, M. W. Mahoney, R. S. Mishra and T. J. Lienert (TMS), February.
P. SU, A. GERLICH and T. H. NORTH, SAE Technical Series 2005-01-1255, in press.
J. ZHANG and A. T. ALPAS, Acta Mater. 45(2) (1997) 513.
H. CHEN and A. T. ALPAS, Wear 246 (2000) 106.
Y. LIU, R. ASTHANA and P. ROHATGI, J. Mat. Sci. 26 (1991) 99.
N. P. SUH “Tribophysics”, (Prentice-Hall, Engelwood Cliffs, NJ, 1986).
S. C. LIN and M. F. ASHBY, Acta. Metall. 25(1) (1987) 1.
P. WANG, J. QU and H. SHAO, in Proceedings of the Internat. Conf. Modeling and Simulation in Metallurgical Engineering and Materials Science, Beijing; June 1996.
F. P. BOWDEN and K. E. W. RIDLER, Proc. Royal Society of London, Series A 154 (883) (1936) 640.
F. P. BOWDEN and P. H. THOMAS, ibid. 223 (1152) (1954) 29.
T. F. J. QUINN and W. O. WINER, Wear 102 (1985) 67.
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Gerlich, A., Su, P. & North, T.H. Tool penetration during friction stir spot welding of Al and Mg alloys. J Mater Sci 40, 6473–6481 (2005). https://doi.org/10.1007/s10853-005-1568-9
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DOI: https://doi.org/10.1007/s10853-005-1568-9