Effect of nanocrystallization on tribological behaviors of ingot iron

Wear Behavior of Nanostructured Al and Al–B4C Nanocomposites Produced by Mechanical Milling and Hot Extrusion

“…This can be attributed to the relatively higher hardness of the nanostructured Al matrix. Similar results have been reported by Lv et al [29] for bulk nanocrystalline ingot Iron. As shown in Fig.…”

The Tribological Properties of a Nano-Eutectic Fe1.87C0.13 Alloy Under Liquid Paraffine Lubrication

“…Recently, the tribological properties of the nanostructured materials have also been paid more attention because of the markedly enhanced wear resistance compared to the coarse-grained counterparts [3][4][5][6][7][8][9][10][11], so they are also expected to find applications as wear-resistance structural parts. The most investigations on the tribological properties of the nanostructured materials focus on the dry-sliding condition.…”

Tribological behavior of Fe70Ni30 alloy with nanoscale twins under liquid paraffin lubrication

“…[4][5][6][7][8][9][10][11] Because the large volume fraction of grain boundaries could block the dislocation movement, 3 the strength and hardness of the nanostructured metals improves significantly, which is beneficial to the enhancement of their wear resistance. Wang et al 4 reported that due to the hardness improvement, the wear resistance of nano-eutectic Fe 1.87 C 0.13 alloy is about 2-6 times higher than that of the annealed coarse-grained counterpart.…”

“…Meanwhile, numerous boundaries of nanostructured metals could be helpful to the oxygen diffusion under atmosphere environment or absorption of oil lubricant under oil lubrication. [6][7][8] Shafiei et al 7 depicted that nano-metals have large fraction of grain boundaries that may act as the preferential nucleation sites for oxides and diffusion paths for oxygen to form protective oxides film on the friction surface. Lv et al 8 found that large fraction grain boundaries of nanocrystalline ingot iron may produce more broken bond and increase the surface reactivity, which may be helpful to the formation of adsorptive or reactive film on the friction surface.…”

“…[6][7][8] Shafiei et al 7 depicted that nano-metals have large fraction of grain boundaries that may act as the preferential nucleation sites for oxides and diffusion paths for oxygen to form protective oxides film on the friction surface. Lv et al 8 found that large fraction grain boundaries of nanocrystalline ingot iron may produce more broken bond and increase the surface reactivity, which may be helpful to the formation of adsorptive or reactive film on the friction surface. Some studies [9][10][11] were also conducted to investigate the effect of transition of deformation mechanisms on the tribological behavior of nanomaterials.…”