The results displayed increase in strength for Mg/1.98TiO 2 and Mg/2.5TiO 2 nanocomposites owing to uniformly dispersed TiO 2 nanoparticles acted as nucleation sites during recrystallization and pinned the grain boundaries thus reducing the grain size for pure Mg.Īrsha Antony Geetha. Owing to significant grain reduction displayed by Mg/1.98TiO 2 and Mg/2.5TiO 2 nanocomposites prepared by powder metallurgy route and disintegrated melt deposition technique, the nanocomposites showed higher Hall-Petch strengthening of around 58 MPa and 61 MPa respectively. Similarly, the grain size also significantly reduced for Mg/1.98TiO 2 and Mg/2.5TiO 2 prepared by disintegrated melt deposition technique in comparison to pure Mg by 40% and 18% respectively ( Meenashisundaram et al., 2015b). 4 Compressive strength.Įarlier results show the grain size reduced for Mg/1.98TiO 2 and Mg/2.5TiO 2 nanocomposites prepared by powder metallurgy route in comparison to pure Mg by 12% and 18% respectively ( Meenashisundaram et al., 2015b). 2 Data taken from other studies of the same material. 2 Hardness from other data with same material. Hardness (Vicker’s hardness number – VHN)
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