Study of Brazeability of SiC_P/A356 Composites and Aluminum Alloy Using Semisolid Metal with High Solid Fraction by Stirring

Abstract:

The semi-solid brazing process of SiC_p/A356 composites and 2024 aluminum alloy using Zn-Al eutectic filler metal at 450 °C has been investigated. The two substrates and Zn-Al filler metal were heated up to the semisolid temperature range of Zn-Al filler metal by a resistance heating plate. In order to mix the filler metal with the base metal of both sides to be a single uniform joint, a stirrer was introduced into the weld seam. After stirring, specimens were sectioned for analysis of macro- and micro-structures along the weld region. The research shows that SiC_p/A356 composites and aluminum can be joining by semisolid metal. It can be found that almost half of the oxide film on the surface of the base metal was disrupted and removed through the observation by SEM. The metallurgical bonds formed between the filler metal and the base materials on the interface of oxide had been disrupted. Moreover, the oxide film of surface of aluminum alloy was more thoroughly disrupted and removed than that of surface of composites with existing of SiC particle.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 663-666
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.663
• Online since: May 2011
• Authors: Hui Bin Xu, Quan Xiang Luo, Jin Ying He, Bo Fang Zhou, You Liang Zeng, Chang Hua Du
• Keywords: Aluminium Alloy 2024, Aluminum Metal Matrix Composite, Brazing, Semi-Solid, Stirring

References

[1] Sun DQ, Gu XY and Liu WH: Mater. Sci. Eng A. Vol. 391(2005), p.29

[2] Huang, JH, Wan Y, Zhao HT, Cheng DH and Zhang H: Mater. Sci. Technol. Vol. 23 (2007), p.87

[3] Liu LM, Zhu ML, Pan LX and Wu L: Mater. Sci. Eng A. Vol. 315 (2001), p.103

[4] Zhang XP, Ye L, Mai YW: Compos Part A: Appl Sci Manuf. Vol.30(1999), p.1415

[5] Zhang XP, Quan GF, Wei W: Compos Part A: Appl Sci Manuf. Vol. 30(1999), p.823

[6] Urena A, Gil L, Escriche E: Sci. Tech. Weld. Join. Vol. 6(2001), p.1

[7] J.HU, Q.F. XING, C.K. YAO. J. MATER. SCI. LETTERS, Vol. 16(1997),p.835

[8] J. C. Yan, H. B. Xu, L. Shi, X. L. Wang, S. Q. Yang. Sci. Technol.Weld. Join. Vol. 13(2008),p.760

[9] Mendez PF, Rice CS and Brown SB: Weld. J. Vol. 81(2002), p.181

[10] Shalchi B, Aashuri H, Kokabi A, Abbasi Gharacheh M and Molla J: Solid State Phenomena. Vol. 116-117 (2006), p.397

DOI: 10.4028/www.scientific.net/ssp.116-117.397

[11] Narimannezhad A, Aashuri H, Kokabi A and Khosravani A: J. Mater. Proc. Technol. Vol. 209(2009), p.4112

[12] Kiuchi M, Kopp R.. CIRP Ann. Manuf. Technol. Vol. 51(2002),p.653