Modelling of defects and amorphisation by ball milling of γ-TiAl

Jochym, Paweł T.; Parliński, K.; Maziarz, W.

doi:10.1016/j.intermet.2006.01.053

Cited by 2 publications

(1 citation statement)

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“…An increase in ductility of intermetallics can also be achieved by reducing the grain size by mechanical alloying (MA) (Suryanarayana, 2001). It is a technique offering microstructural refinement, leading even to an amorphous structure, after long milling times (Jochym et al , 2006). Additionally, the oxide dispersoid, whose amount may be controlled by MA, ought to contribute to the improvement of strength and creep properties despite a fine‐grained microstructure.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Nb15Al10Ti alloy produced by mechanical alloying and high temperature processing

Rozmus

Blicharski

Dymek

2010

Journal of Microscopy

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Summary In this work, an Nb15Al10Ti alloy produced by mechanical alloying was investigated. The milling of elemental powders of Nb, Al as well as TiAl intermetallic phase resulted in the formation of homogenous niobium solid solution, Nbss, and refinement of powder particles. Powder after milling was consolidated by conventional hot pressing at 1300°C under pressure of 25 MPa as well as by hot isostatic pressing at 1200°C under pressure of 1 GPa. Microstructure of consolidated material was examined by transmission electron microscopy, scanning electron microscopy and X‐ray diffraction. Materials after consolidation were composed of three phases: niobium solid solution Nbss, Nb3Al intermetallic phase and titanium oxide dispersoid TiO. The analysis of the mechanical properties indicated that both refinement of microstructure as well as introduction of ductile Nbss into the microstructure contributed to very high yield strength and fracture toughness satisfactory for this strength.

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Section: Introductionmentioning

confidence: 99%