Jan. 31, 2011
Iranian researchers at Isfahan University of Technology have improved the properties of iron aluminide alloy by adding titanium and resizing the dimensions...
Iranian researchers at Isfahan University of Technology have improved the properties of iron aluminide alloy by adding titanium and resizing the dimensions of its grains to nanometric scale for application in aerospace industry.
"Fe3Al alloy is an inter-metallic compound that has limited application in industry because of low flexibility and resistance at home temperature. This defect maybe remedied by the addition of a third alloy and reduction of its grains’ size to nanometric scale,” said Mehdi Rafiei, PhD student of materials engineering at Isfahan University of Technology, Fars News Agency reported.
Referring to the application of titanium in the research, he said, "We first milled three elements Fe-Al-Ti. Then, we analyzed samples taken from milled powder at different times to investigate the titanium effect in the compound. After all, we examined nanostrength of powder particles of both powder mixtures of Fe-Al and Fe-Al-Ti.”
The results show that the presence of titanium, instead of iron, in Fe-Al system improves DO3 order degree and reduces milling time. Moreover, Fe-Al-Ti system has smaller grain size at all times compared to Fe-Al. It also has more strength.
"This compound, thanks to its resistance to high temperatures along with low density, could be utilized in high temperature applications and aerospace industry,” Rafiei said.