Phase stability, porosity distribution and microstructural evolution of amorphous Al50Ti50 powders consolidated by electrical resistance sintering | Zendy

Petr Urban | Zendy; F. G. Cuevas | Zendy; J. M. Montes | Zendy; J. Cintas | Zendy

Open Access

Phase stability, porosity distribution and microstructural evolution of amorphous Al50Ti50 powders consolidated by electrical resistance sintering

Author(s) -

Petr Urban,

F. G. Cuevas,

J. M. Montes,

J. Cintas

Publication year - 2015

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4914291

Subject(s) - sintering , materials science , porosity , amorphous solid , scanning electron microscope , phase (matter) , microstructure , electrical resistance and conductance , intermetallic , composite material , chemical engineering , metallurgy , crystallography , chemistry , organic chemistry , alloy , engineering

The effect of intensity and duration of the electrical resistance sintering process on the phase stability, porosity distribution and microstructural evolution of Al50Ti50 amorphous powders is studied. The phase transformations during the consolidation process were determined by X-ray diffraction. The porosity distribution was observed by optical and scanning electron microscopy. The amorphous phase is partially transformed to the crystalline phase during the sintering process, and formation of AlTi and AlTi3 intermetallic compounds occurs for temperatures higher than 300 °C. Finally, it is observed that the compacts core have lower porosity and a higher tendency to the amorphous-crystalline phase transformation than the periphery

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