2006
DOI: 10.1016/j.intermet.2005.12.006
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The role of oxygen content and cooling rate on transformations in TiAl-based alloys

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Cited by 26 publications
(15 citation statements)
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“…According to some authors [35], oxygen content should be kept below 1000 ppm (0.1 wt.%) in order to have a valuable material. It is also known that this oxygen content may affect the phase transformation processes [36]. As it has been seen, the results obtained in this work partially satisfy this oxygen requirement: FSHS þ C compaction route products are within the required oxygen content, while TE þ C compaction route products show elevated oxygen content.…”
Section: Resultssupporting
confidence: 72%
“…According to some authors [35], oxygen content should be kept below 1000 ppm (0.1 wt.%) in order to have a valuable material. It is also known that this oxygen content may affect the phase transformation processes [36]. As it has been seen, the results obtained in this work partially satisfy this oxygen requirement: FSHS þ C compaction route products are within the required oxygen content, while TE þ C compaction route products show elevated oxygen content.…”
Section: Resultssupporting
confidence: 72%
“…These observations of the formation of grain boundary gamma and of gamma/gamma lamellae during continuous cooling mean that CCT curves [15][16][17] should be modified by including the formation of these phases.…”
Section: Discussionmentioning
confidence: 90%
“…While considering from a thermodynamic point of view, in the case of GE alloy having alloying elements like Cr and Nb-which are b stabilizers-excludes the possibility of passing through a as its first solidification phase. The effect of oxygen on the transformation temperature and phase domain is not significant since the alloy contains less than 1500 ppm of oxygen [20]. From the kinetics point of view, the solidification rate must be as high as 300 mm/h to have a as the first transformation phase from liquid [35].…”
Section: As-cast Structurementioning
confidence: 99%