Investigation of Microstructure and Mechanical Properties of Semi-Solid State Joining of SSM Aluminum Alloys

Abstract:

In this research, the semi-solid state joining of SSM A356 aluminum alloy was investigated. The butt-joint of SSM A356 was heated by an induction heating coil to create a localized semisolid pool. Then a stirrer was applied into the joint seam in order to mix the weld metal. The accurate controlling of temperature during joining was measured. The effects of stirring rate on physical, macrostructure, microstructure and mechanical properties were studied. Experimental results showed that increase in stirring rates, the surface of the joint was smooth. The weld metal consisted of the globular microstructure and also voids. The density of weld metal zone increased by an appropriate stirring. The best tensile strength was achieved with 1750 rpm, 70 mm/min for 103.4 MPa.

• Periodical: Applied Mechanics and Materials (Volumes 496-500)
• Pages: 371-375
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.496-500.371
• Online since: January 2014
• Authors: Apirit Petkhwan*, Prapas Muangjunburee, Jessada Wannasin
• Keywords: Semi-Solid Joining, Semi-Solid Metal, SSM A356 Aluminum Alloy

References

[1] Romadorn Burapa, Rungsinee Canyook and Jessada Wannasin. Development of the Gas Induced Semi-Solid Metal Processing for A356 Aluminum Alloy. PSU-E Engineering Conference (PEC-5), 21-22 May (2009).

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

[3] Worapong Boonchouytan, Thanate Ratanawilai and Prapas Muangjunburee. Effect of Pre/Post Heat Treatment on the Friction Stir Welded SSM 356 Aluminum Alloys. Advanced Materials Research Vols. 488-489(2012), pp.328-334.

DOI: 10.4028/www.scientific.net/amr.488-489.328

[4] Narimannezhad A, Aashuri H, Kokabi AH, et al. Microstructural evolution and mechanical properties of semisolid stir welded zinc AG40A die cast alloy. J Mater Process Technol 2009; 209: 4112–21.

DOI: 10.1016/j.jmatprotec.2008.10.004

[5] Alvani SMJ, Aashuri H, Kokabi A, et al. Semisolid joining of aluminum A356 alloy by partial remelting and mechanical stirring. Trans Nonferrous Met Soc China 2010; 209: 1792-8.

DOI: 10.1016/s1003-6326(09)60376-9

[6] Huibin Xu, Quanxiang Luo, Bofang Zhou, et al. The effect of stirring rate on semisolid stirring brazing of SiCP /A356 composites in air. Materials and Design 2012; 34: 452-8.

DOI: 10.1016/j.matdes.2011.09.001

[7] Huibin Xu, Bcfang Zhou, Changhua, et al. Microstructure and properties of joint interface of semisolid stirring brazing of composites. J Mater Sci Technol 2012; 28(12): 1163-8.

DOI: 10.1016/s1005-0302(12)60187-x