Use of Friction Extrusion to Fabricate Magnesium Alloy Wires with Rare Earths from Machined Chips

Abstract:

Magnesium alloy wires with rare earth elements were fabricated using friction extrusion by varying tool rotational speed in the range of 400 to 1200 rpm. Microstructure of wires fabricated usin 800 rpm consists finer equiaxed mg grains with finer precipitates homogeneously distributed along the grain boundaries. The strength of the wires fabricated under optimum parametes exhited a strength of 304 MPa which is 45 % higher than the tensile strength of as-cast material. Improper processing conditions results in undesirable microstrucutre and loss of strength values.-

• Periodical: Materials Science Forum (Volume 979)
• Pages: 119-123
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.979.119
• Online since: March 2020
• Authors: A.K. Lakshminarayanan*, K.S. Jayakumar
• Keywords: Friction Extrusion, Magnesium Machied Chips, Microstructure, Strength

References

[1] J. Wang, Y. Lin, T. Chang and S. Lee, Recycling the Magnesium Alloy AZ91D in Solid State, Mater. Trans. 47 (2006) 1047-1051.

DOI: 10.2320/matertrans.47.1047

[2] I. Ilić, M. Korać, Ž. Kamberović, J. Pavlović, Possibilities of recycling of magnesium and magnesium alloys, METAURGIJA - JOURNAL OF METALLURGY, (2004) 261-265.

[3] M. Shanthi, C.Y.H. Lim, L .L u, Effects of grain size on the wear of recycled AZ91 Mg, Tribol. Inter. 40 (2007) 335-338.

DOI: 10.1016/j.triboint.2005.11.025

[4] T. Peng, Q.D. Wang, M.P. Liu, J. Zheng, J.B. Lin, An optimization approach for hot compaction technology of Mg– 10Gd– 2Y– 0.5Zr alloy during solid-state recycling, Powder Technol. 194 (2009) 142–148.

DOI: 10.1016/j.powtec.2009.03.040

[5] K. Kondoh, T. Luangvaranunt, and T. Aizawa, Solid-State Recycle Processing for Magnesium Alloy Waste via Direct Hot Forging, Mater. Trans. 43 (2002) 322-325.

DOI: 10.2320/matertrans.43.322

[6] M. Sharifzadeh, M.A. Ansari, M. Narvan, R.A. Behnagh, A. Araee, M. K. Besharati Givi Evaluation of wear and corrosion resistance of pure Mg wire produced by friction stir extrusion, Trans. Nonferrous Met. Soc. China 25(2015) 1847−1855.

DOI: 10.1016/s1003-6326(15)63791-8

[7] R.A. Behnagh, N. Shen, M.A. Ansari, M. Narvan, M.K Besharati Givi and H. Ding, Experimental Analysis and Microstructure Modeling of Friction Stir Extrusion of Magnesium Chips, J. Manuf. Sci. Eng 138 (2016) 1-8.

DOI: 10.1115/1.4031281

[8] G. Buffa, D. Campanella, L. Fratini, F. Micari, AZ31 magnesium alloy recycling through friction stir extrusion process, Int. J. Mater. Form. 9 (2016) 613–618.

DOI: 10.1007/s12289-015-1247-6