Details

Autor(en) / Beteiligte

• Takahashi, Tomoshi
• Minamino, Yoritoshi
• Komatsu, Masao

Titel

Interdiffusion in β phase in the ternary Ti–Al–Fe system alloys

Ist Teil von

• Journal of Japan Institute of Light Metals, 2010/09/30, Vol.60(9), pp.444-450

Ort / Verlag

Tokyo: The Japan Institute of Light Metals

Erscheinungsjahr

2010

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• The interdiffusion in Ti-rich β Ti–Al–Fe alloys has been investigated in the temperature range from 1323 to 1473 K. The main interdiffusion coefficients, D˜TiAlAl and D˜TiFeFe, and cross interdiffusion coefficients, D˜TiAlFe and D˜TiFeAl, have positive values in the ternary alloys, and they have slight concentration dependence. The values of D˜TiFeFe are larger than those of D˜TiAlAl, D˜TiAlAl, and the values of D˜TiFeAl are also larger than those of D˜TiAlFe. The repulsive interactions exist between Al and Fe atoms in the Ti–Al–Fe alloys, because the ratio values of cross coefficient to main one are positive in sign. On the other hand, the interactions between Ti (solvent) and Al (or Fe) atoms are attractive in the present alloy, since the ratio of converted interdiffusion coefficients in the ternary alloys show negative values.