A comparative study of microstructure, compressive, and fracture properties of Ti3Al-based intermetallics produced via powder metallurgy, and melting and casting processes
Abstract
A comparative study of the microstructure, compressive properties, and fractography of Ti3Al and Ti3Al-Nb intermetallics produced via powder metallurgy and standard vacuum melting and casting processes has been carried out. Non-porous compacts were obtained via vacuum hot pressing of powders produced by mechanical alloying. Prior to compression tests, all samples were homogenized by a solution treatment at 1 050 degrees C (alpha + beta region), followed by water quenching. The compression tests were performed from room temperature to 500 degrees C in vacuum at a strain rate of 2.4 x 10(-3)s(-1). Detailed microstructural characterization was conducted using scanning electron microscopy, followed by energy dispersive X-ray spectroscopy and X-ray diffraction analysis. Values of compressive mechanical properties of compacts were higher than those of castings. Fracture topography was examined by scanning electron microscopy. A correlation between ductility and the fracture mode exists for a...ll materials.
Keywords:
Titanium aluminides / Alloying / Powder metallurgy / Casting / Mechanical propertiesSource:
International Journal of Materials Research, 2012, 103, 11, 1325-1331Funding / projects:
- The effect of nano- and microconstituents on the synthesis and characteristics of novel composite materials with metal matrix (RS-MESTD-Basic Research (BR or ON)-172005)
DOI: 10.3139/146.110790
ISSN: 1862-5282
WoS: 000311973100007
Scopus: 2-s2.0-84870191772
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Institution/Community
VinčaTY - JOUR AU - Dimčić, Biljana AU - Stašić, Jelena AU - Radić, Olivera AU - Božić, Dušan PY - 2012 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5186 AB - A comparative study of the microstructure, compressive properties, and fractography of Ti3Al and Ti3Al-Nb intermetallics produced via powder metallurgy and standard vacuum melting and casting processes has been carried out. Non-porous compacts were obtained via vacuum hot pressing of powders produced by mechanical alloying. Prior to compression tests, all samples were homogenized by a solution treatment at 1 050 degrees C (alpha + beta region), followed by water quenching. The compression tests were performed from room temperature to 500 degrees C in vacuum at a strain rate of 2.4 x 10(-3)s(-1). Detailed microstructural characterization was conducted using scanning electron microscopy, followed by energy dispersive X-ray spectroscopy and X-ray diffraction analysis. Values of compressive mechanical properties of compacts were higher than those of castings. Fracture topography was examined by scanning electron microscopy. A correlation between ductility and the fracture mode exists for all materials. T2 - International Journal of Materials Research T1 - A comparative study of microstructure, compressive, and fracture properties of Ti3Al-based intermetallics produced via powder metallurgy, and melting and casting processes VL - 103 IS - 11 SP - 1325 EP - 1331 DO - 10.3139/146.110790 ER -
@article{ author = "Dimčić, Biljana and Stašić, Jelena and Radić, Olivera and Božić, Dušan", year = "2012", abstract = "A comparative study of the microstructure, compressive properties, and fractography of Ti3Al and Ti3Al-Nb intermetallics produced via powder metallurgy and standard vacuum melting and casting processes has been carried out. Non-porous compacts were obtained via vacuum hot pressing of powders produced by mechanical alloying. Prior to compression tests, all samples were homogenized by a solution treatment at 1 050 degrees C (alpha + beta region), followed by water quenching. The compression tests were performed from room temperature to 500 degrees C in vacuum at a strain rate of 2.4 x 10(-3)s(-1). Detailed microstructural characterization was conducted using scanning electron microscopy, followed by energy dispersive X-ray spectroscopy and X-ray diffraction analysis. Values of compressive mechanical properties of compacts were higher than those of castings. Fracture topography was examined by scanning electron microscopy. A correlation between ductility and the fracture mode exists for all materials.", journal = "International Journal of Materials Research", title = "A comparative study of microstructure, compressive, and fracture properties of Ti3Al-based intermetallics produced via powder metallurgy, and melting and casting processes", volume = "103", number = "11", pages = "1325-1331", doi = "10.3139/146.110790" }
Dimčić, B., Stašić, J., Radić, O.,& Božić, D.. (2012). A comparative study of microstructure, compressive, and fracture properties of Ti3Al-based intermetallics produced via powder metallurgy, and melting and casting processes. in International Journal of Materials Research, 103(11), 1325-1331. https://doi.org/10.3139/146.110790
Dimčić B, Stašić J, Radić O, Božić D. A comparative study of microstructure, compressive, and fracture properties of Ti3Al-based intermetallics produced via powder metallurgy, and melting and casting processes. in International Journal of Materials Research. 2012;103(11):1325-1331. doi:10.3139/146.110790 .
Dimčić, Biljana, Stašić, Jelena, Radić, Olivera, Božić, Dušan, "A comparative study of microstructure, compressive, and fracture properties of Ti3Al-based intermetallics produced via powder metallurgy, and melting and casting processes" in International Journal of Materials Research, 103, no. 11 (2012):1325-1331, https://doi.org/10.3139/146.110790 . .