Effect of Pre/Post Heat Treatment on the Friction Stir Welded SSM 356 Aluminum Alloys

Abstract:

The butt joints of semi solid 356 were produced in as cast conditions by friction stir welding process (FSW). This experiment studied in pre/post heat treatment (T6) using the welding speed 160 mm / min with tilt angle tool at 3 degree and straight cylindrical tool pin. The factors of welding were rotating speed rates at 1320, 1750 rpm and heat treatment conditions. They were divided into (1) As welded (AW) joints, (2) T6 Weld (TW) joints, (3) Weld T6 (WT) joints, (4) T6 Weld T6 (TWT) joints, (5) Solution treated Weld Artificially aged (SWA) joints and (6) Weld Artificially aged (WA) joints. Rotating speed and heat treatment (T6) condition were an important factor to micro, macro structure of metal and mechanical properties of the weld. Increasing rotating speed and different heat treatment condition impacted onto tensile strength due to the defects on joints. Therefore the optimum welding parameter on joint was a rotating speed 1320 rpm, the welding speed 160 mm/min, heat treatment condition of Weld T6 (WT) which obtained the highest tensile strength 228.92 MPa, as well as, highest hardness of 98.1 HV

• Periodical: Advanced Materials Research (Volumes 488-489)
• Pages: 328-334
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.488-489.328
• Online since: March 2012
• Authors: Worapong Boonchouytan, Thanate Ratanawilai, Prapas Muangjunburee
• Keywords: Friction Stir Welding (FSW), Heat Treatment T6, Semi-Solid Metal 356

References

[1] J. Wannasin, R.A. Martinez and M.C. Flemings: Solid Conditions Phenomena. Forum Vol. 116-167 (2006), pp.336-369.

[2] J. Wannasin and S. Thanabumrungkul: Songklanakarin Journal of Science and Technology. Forum Vol. 30 (2008), pp.215-200.

[3] R. Akhter, L. Ivanchev and H.P. Burger: Materials Science and Engineering. Forum Vol. 447 (2007), pp.192-196.

[4] G. Govender, L. Ivanchev, H. Burger, R. Knutsen and G. Kunene: Solid Conditions Phenomena. Forum Vol. 141-143 (2008), pp.773-778.

DOI: 10.4028/www.scientific.net/ssp.141-143.773

[5] W.M. Thomas, E.D. Nicholas, J.C. Needham, M.G. Murch, P. Templesmith and C.J. Dawes, G.B. Patent Application 9125978. 8. (1991).

[6] W.B. Lee, Y.M. Yeon and S.B. Jung: Materials Science and Engineering. Forum Vol. 355 (2003), pp.154-159.

[7] Y.G. Kim, H. Fujii, T. Tsumura, T. Komazaki and K. Nakata: Materials Letters. Forum Vol. 60 (2006), pp.3830-3837.

[8] S. Kuntongkum, S. Wisutmethangoon, T. Plookphol and J. Wannasin: Metals, Materials and Minerals. Forum Vol. 18 (2008), pp.293-297.

[9] Y.C. Chen, H.J. Liu and J.C. Feng: Material Science and Engineering. Forum Vol. 40 (2005), pp.4657-4659.

[10] H. Moller1 G. Govender1 and W.E. Stumpf: Materials Science and Metallurgical Engineering University of Pretoria South Africa.

[11] A.P. Druschitz, T.E. Prucha, A.E. Kopper and T.A. Chadwick: SAE 2001 World Congress, Detroit, Michigan, (2001).

[12] K. Elangovana and V. Balasubramanianb: Materials Characterization. Forum Vol. 59 (2008), p.1168–1177.

[13] Y.G. Kim, H. Fujii, T. Tsumura, T. Komazaki and K. Nakata: Material Science and Engineering. Forum Vol. 415 (2006), pp.250-254.

[14] Z.Y. Ma, S.R. Sharma and R.S. Mishra: Material Science and Engineering. Forum Vol. 433 (2006), pp.269-278.