A comparative study of microstructure, mechanical and fracture properties of Ni3Al-based intermetallics produced by powder metallurgy and standard melting and casting processes
Апстракт
A comparative study of the microstructure, mechanical properties and fractography of Ni3Al macro- and microalloyed intermetallics produced by powder metallurgy (PM) and standard vacuum melting and casting processes has been carried out. Non-porous PM compacts were obtained by vacuum hot pressing of powders produced either by gas atomization or by a rotating electrode process. All materials showed a positive temperature dependence of the compression yield strength. The maximum strength was attained between 600 and 700 degrees C, then the decrease occurs. With increase in temperature the ductility of all materials slightly decreased to a minimum and then abruptly increased. Values of mechanical properties of PM compacts were higher than those of as-cast material. There is a correlation between the fracture morphology and the ductility of Ni3Al, i.e. the higher ductility corresponds to transgranular fracture, while the minimum ductility is a consequence of intergranular fracture.
Извор:
Journal of Materials Science, 1996, 31, 12, 3213-3221
DOI: 10.1007/BF00354671
ISSN: 0022-2461
WoS: A1996UV97600024
Scopus: 2-s2.0-0030170255
Колекције
Институција/група
VinčaTY - JOUR AU - Božić, Dušan AU - Ilić, N. AU - Mitkov, Mirjana V. AU - Jovanović, Milan T. AU - Zdujić, Miodrag PY - 1996 UR - https://vinar.vin.bg.ac.rs/handle/123456789/1993 AB - A comparative study of the microstructure, mechanical properties and fractography of Ni3Al macro- and microalloyed intermetallics produced by powder metallurgy (PM) and standard vacuum melting and casting processes has been carried out. Non-porous PM compacts were obtained by vacuum hot pressing of powders produced either by gas atomization or by a rotating electrode process. All materials showed a positive temperature dependence of the compression yield strength. The maximum strength was attained between 600 and 700 degrees C, then the decrease occurs. With increase in temperature the ductility of all materials slightly decreased to a minimum and then abruptly increased. Values of mechanical properties of PM compacts were higher than those of as-cast material. There is a correlation between the fracture morphology and the ductility of Ni3Al, i.e. the higher ductility corresponds to transgranular fracture, while the minimum ductility is a consequence of intergranular fracture. T2 - Journal of Materials Science T1 - A comparative study of microstructure, mechanical and fracture properties of Ni3Al-based intermetallics produced by powder metallurgy and standard melting and casting processes VL - 31 IS - 12 SP - 3213 EP - 3221 DO - 10.1007/BF00354671 ER -
@article{ author = "Božić, Dušan and Ilić, N. and Mitkov, Mirjana V. and Jovanović, Milan T. and Zdujić, Miodrag", year = "1996", abstract = "A comparative study of the microstructure, mechanical properties and fractography of Ni3Al macro- and microalloyed intermetallics produced by powder metallurgy (PM) and standard vacuum melting and casting processes has been carried out. Non-porous PM compacts were obtained by vacuum hot pressing of powders produced either by gas atomization or by a rotating electrode process. All materials showed a positive temperature dependence of the compression yield strength. The maximum strength was attained between 600 and 700 degrees C, then the decrease occurs. With increase in temperature the ductility of all materials slightly decreased to a minimum and then abruptly increased. Values of mechanical properties of PM compacts were higher than those of as-cast material. There is a correlation between the fracture morphology and the ductility of Ni3Al, i.e. the higher ductility corresponds to transgranular fracture, while the minimum ductility is a consequence of intergranular fracture.", journal = "Journal of Materials Science", title = "A comparative study of microstructure, mechanical and fracture properties of Ni3Al-based intermetallics produced by powder metallurgy and standard melting and casting processes", volume = "31", number = "12", pages = "3213-3221", doi = "10.1007/BF00354671" }
Božić, D., Ilić, N., Mitkov, M. V., Jovanović, M. T.,& Zdujić, M.. (1996). A comparative study of microstructure, mechanical and fracture properties of Ni3Al-based intermetallics produced by powder metallurgy and standard melting and casting processes. in Journal of Materials Science, 31(12), 3213-3221. https://doi.org/10.1007/BF00354671
Božić D, Ilić N, Mitkov MV, Jovanović MT, Zdujić M. A comparative study of microstructure, mechanical and fracture properties of Ni3Al-based intermetallics produced by powder metallurgy and standard melting and casting processes. in Journal of Materials Science. 1996;31(12):3213-3221. doi:10.1007/BF00354671 .
Božić, Dušan, Ilić, N., Mitkov, Mirjana V., Jovanović, Milan T., Zdujić, Miodrag, "A comparative study of microstructure, mechanical and fracture properties of Ni3Al-based intermetallics produced by powder metallurgy and standard melting and casting processes" in Journal of Materials Science, 31, no. 12 (1996):3213-3221, https://doi.org/10.1007/BF00354671 . .