Development and Mechanical Properties of In Situ Al{sub 3}Ti-Reinforced Nanostructured AA6061 via Mechanical Alloying
- Malaviya National Institute of Technology, Department of Metallurgical and Materials Engineering (India)
- Indian Institute of Technology Madras, Department of Metallurgical and Materials Engineering (India)
Mechanical alloying (MA) was used to disperse 10 wt.% titanium powder in AA6061 powder. The resultant powder was degassed, and differential scanning calorimetry was performed to determine the temperature for formation of titanium aluminide (Al{sub 3}Ti). The MA powder was characterized by field emission scanning electron microscopy, x-ray diffraction (XRD) and transmission electron microscopy (TEM). Subsequently, the MA powder was consolidated by spark plasma sintering (SPS) at 500 °C under a pressure of 50 MPa. XRD and x-ray energy-dispersive spectroscopy of spark plasma sintered compact revealed in situ formation of Al{sub 3}Ti. TEM micrographs of spark plasma sintered sample exhibited Al nanograins (average size 50 nm) in the AA6061 matrix along with the dispersed Al{sub 3}Ti (average size 200 nm). Hardness, yield strength and compressive strength of the SPSed samples were also evaluated and compared with AA6061.
- OSTI ID:
- 22971048
- Journal Information:
- Journal of Materials Engineering and Performance, Journal Name: Journal of Materials Engineering and Performance Journal Issue: 1 Vol. 28; ISSN 1059-9495; ISSN JMEPEG
- Country of Publication:
- United States
- Language:
- English
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