Phase stability, porosity distribution and microstructural evolution of amorphous Al{sub 50}Ti{sub 50} powders consolidated by electrical resistance sintering

Journal Article · Mon Mar 30 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4914291· OSTI ID:22391340

Montes, J. M.; Cintas, J. ^[1]

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1. University of Seville, Department of Mechanical and Materials Engineering, ETSI, Camino de los Descubrimientos s/n, Seville, 41092 (Spain)

The effect of intensity and duration of the electrical resistance sintering process on the phase stability, porosity distribution and microstructural evolution of Al{sub 50}Ti{sub 50} 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 AlTi{sub 3} 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.

• OSTI ID: 22391340
• Journal Information: AIP Conference Proceedings, Vol. 1653, Issue 1; Conference: APMAS 2014: 4. International Congress in Advances in Applied Physics and Materials Science, Fethiye (Turkey), 24-27 Apr 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM
AMORPHOUS STATE
ELECTRIC CONDUCTIVITY
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
PHASE STABILITY
PHASE TRANSFORMATIONS
POROSITY
POWDERS
SCANNING ELECTRON MICROSCOPY
SINTERING
TEMPERATURE DEPENDENCE
TITANIUM
X-RAY DIFFRACTION