Effects of Casting Temperature and RE Refiner on Microstructure of the Squeeze-Cast Al-Zn-Mg-Cu Alloy Drive Hollow Shaft

Abstract:

Effects of casting temperature and RE refiner on microstructure of the hollow Al-Zn-Mg-Cu alloy drive shaft prepared by squeeze casting ( in express locomotive) were investigated in this paper. As the casting temperature increase from 720°C up to 780°C, the average grain size of the α-A1 primary grains increased from 32μm up to 51μm, and the average equivalent roundness changed irregularly. Meanwhile the variation range was not big and the roundness value ranged from 0.63 to 0.72. With the casting temperature up to 780°C, the average equivalent roundness was 0.71. When the refiner was adopted, the average grain size of the alloy decreased obviously. However, no obvious change was detected in the average equivalent roundness, which ranged from 0.73 to 0.78. With the refiner of 3wt% Al-10RE, the average grain size of the alloy and the average equivalent roundness were 35μm and 0.77, respectively.

• Periodical: Advanced Materials Research (Volumes 779-780)
• Pages: 78-83
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.779-780.78
• Online since: September 2013
• Authors: Cai He Fan, Yue Bing Zhu, Na Yang
• Keywords: Al-Zn-Mg-Cu Alloy, Casting Temperature, Microstructure, RE Refiner, Squeeze Casting

References

[1] C. H. Fan, Z. H. Chen, Effects of Pressure and Dual Refiner on Microstructure of the Hollow Al-Zn-Mg-Cu Alloy Drive Shaft Prepared by Squeeze Casting, Special Casting and Nonferrous Alloys. 6(2012)26-30.

DOI: 10.4028/www.scientific.net/amr.779-780.78

[2] P. Z. Chao, T. Tsuchida, Effect of fabrication conditions and Cr, Zr contents on the grain structure of 7075 and 6061 aluminum alloys, Mater. Sci. Eng. A. 499(2009)78-82.

DOI: 10.1016/j.msea.2007.09.094

[3] D. Liu, H. V. Atkinson, P. Kapranos, Microstrural evolution and tensile mechanical properties of thixoformed high performance aluminium alloys, Mater. Sci. Eng. A. 361(2003)213-224.

DOI: 10.1016/s0921-5093(03)00528-8

[4] S. N. Chou, J. L. Huang, D. F. Lii, The mechanical properties of Al2O3/aluminum alloy A356 composite manufactured by squeeze casting, Journal of Alloys and Compounds. 419(2006)98-102.

DOI: 10.1016/j.jallcom.2005.10.006

[5] M. R. Ghomashchi, A. Vikhrov, Squeeze casting: an overview, Mater. Pro. Tech. 101(2000)1-9.

[6] W. Y. Kim, C. G. Kang, B. M. Kim, Deformation behavior of wrought aluminum alloys in incremental compression experiment with a closed die, J. Mater. Pro. Tech. 191(2007)372-376.

DOI: 10.1016/j.jmatprotec.2007.03.100

[7] G. A. Chadwick, T. M. Yue, Principles and applications of squeeze castings, Met. Mater. 5(989) 6-11.

[8] M. Gallerneault, G. Durrant, B, Cantor. Eutectic channeling in a squeeze cast Al-4. 5%Cu alloy, Scripta Metall. Mater. 32(1995)1553-1557.

DOI: 10.1016/0956-716x(94)00030-l

[9] C. H. Fan, Z. H. Chen, J. H. Chen, Effects of the casting temperature on microstructure and mechanical properties of the squeeze-cast Al-Zn-Mg-Cu alloy, Journal of Alloys and Compounds. 504(2010)42-45.

DOI: 10.1016/j.jallcom.2010.06.012

[10] C. H. Fan, Z. H. Chen, W. Q. He, Effects of the applied pressure on the density, microstructure and tensile strength of the Al-Zn-Mg-Cu alloy prepared by squeeze casting, International Journal of Cast Metals Research. 23(2010)349-353.

DOI: 10.1179/136404610x12693537270253

[11] S. M. Skolianos, G. Kiourtsidis, T. Xatzifotiou, Effect of applied pressure on the microstructure and mechanical properties of squeeze-cast aluminum AA6061 alloy, Mater. Sci. Eng. A. 23(1997)7-24.

DOI: 10.1016/s0921-5093(97)00067-1

[12] K. Lee, Y. N. Kwon, S. Lee, Effects of eutectic silicon particles on tensile properties and fracture toughness of A356 aluminum alloys fabricated by low-pressure-casting, casting-forging, and squeeze-casting processes, Journal of Alloys and Compounds. 461(2008).

DOI: 10.1016/j.jallcom.2007.07.038

[13] D. T. Gethin, R. W. Lewis, M. R. Tadayon, Finite element approach for modelling metel flow and pressured solidification in the squeeze casting process, Int. J. Numer. Meth. Eng. 35(1992)46-53.

DOI: 10.1002/nme.1620350418

[14] A. A. Rao, B. Murty, M. Chakraborty. Role of zirconium and impurities in grain refinement of aluminum with Al-Ti-B, Mater. Sci. Tech. 13(1997)769-777.

DOI: 10.1179/mst.1997.13.9.769

[15] A. Maleki, B. Niroumand, A. Shafyei, Effects of squeeze casting parameters on density, macrostructure and hardness of LM13 alloy, Mater. Sci. Eng. A. 428(2006)135-140.

DOI: 10.1016/j.msea.2006.04.099