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The Application of Friction Stir Processing to the Fabrication of Magnesium-Based Foams

Azizieh M., Pourmansouri R., Balak Z., Kafashan H., Mazaheri M., Kim H. S.

Archives of Metallurgy and Materials

2017

Vol. 62, iss. 4

1957--1962

In the present paper, friction stir processing (FSP) is used to fabricate magnesium-based nanocomposite foams. The effects of the number of FSP passes, TiH2 to Al2O3 weight ratio, and foaming temperature; on the pore distribution and porosity are described. The results indicate that a minimum TiH2 to Al2O3 weight ratio is necessary to provide the best pore distribution and porosity. Closed-cell porous magnesium with a porosity of about 17.5% was successfully fabricated using 4-pass FSP at 800 rpm, by adding 5 mass% TiH2 and 3.5 mass% Al2O3; at a holding temperature of 858 K, and a holding time of 45 min.