Abstract
Tracer self-diffusion coefficients of 51Cr and 59Fe in a high purity Fe-50 mass%Cr alloy have been determined in the temperature range between 923 and 1273 K by use of the sputter-microsectioning technique. A linear Arrhenius line has been observed for each self-diffusion across the α-σ phase transformation temperature 1103 K, which is consistent with the suppression of the σ phase formation by purification. The Arrhenius equations can be expressed by DCr = 0.54 × 10-4 exp(-251 kJ mol-1/RT)m2 s-1 and DFe = 0.30 × 10-4 exp(-243 kJ mol-1/RT) m2 s-1. The activation energies for the self-diffusion of Cr and Fe by the present work are much lower than 293 and 312 kJ mol-1 determined previously by Paxton et al. in the temperature range from 1223 to 1523 K, respectively.
| Original language | English |
|---|---|
| Pages (from-to) | 87-90 |
| Number of pages | 4 |
| Journal | Materials Transactions, JIM |
| Volume | 41 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2000 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Engineering(all)
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Self-diffusion in high purity Fe-50 mass%Cr alloy. / Sugihara, Motohide; Yamazaki, Yoshihiro; Takaki, Seiichi; Abiko, Kenji; Iijima, Yoshiaki.
In: Materials Transactions, JIM, Vol. 41, No. 1, 01.01.2000, p. 87-90.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Self-diffusion in high purity Fe-50 mass%Cr alloy
AU - Sugihara, Motohide
AU - Yamazaki, Yoshihiro
AU - Takaki, Seiichi
AU - Abiko, Kenji
AU - Iijima, Yoshiaki
PY - 2000/1/1
Y1 - 2000/1/1
N2 - Tracer self-diffusion coefficients of 51Cr and 59Fe in a high purity Fe-50 mass%Cr alloy have been determined in the temperature range between 923 and 1273 K by use of the sputter-microsectioning technique. A linear Arrhenius line has been observed for each self-diffusion across the α-σ phase transformation temperature 1103 K, which is consistent with the suppression of the σ phase formation by purification. The Arrhenius equations can be expressed by DCr = 0.54 × 10-4 exp(-251 kJ mol-1/RT)m2 s-1 and DFe = 0.30 × 10-4 exp(-243 kJ mol-1/RT) m2 s-1. The activation energies for the self-diffusion of Cr and Fe by the present work are much lower than 293 and 312 kJ mol-1 determined previously by Paxton et al. in the temperature range from 1223 to 1523 K, respectively.
AB - Tracer self-diffusion coefficients of 51Cr and 59Fe in a high purity Fe-50 mass%Cr alloy have been determined in the temperature range between 923 and 1273 K by use of the sputter-microsectioning technique. A linear Arrhenius line has been observed for each self-diffusion across the α-σ phase transformation temperature 1103 K, which is consistent with the suppression of the σ phase formation by purification. The Arrhenius equations can be expressed by DCr = 0.54 × 10-4 exp(-251 kJ mol-1/RT)m2 s-1 and DFe = 0.30 × 10-4 exp(-243 kJ mol-1/RT) m2 s-1. The activation energies for the self-diffusion of Cr and Fe by the present work are much lower than 293 and 312 kJ mol-1 determined previously by Paxton et al. in the temperature range from 1223 to 1523 K, respectively.
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U2 - 10.2320/matertrans1989.41.87
DO - 10.2320/matertrans1989.41.87
M3 - Article
VL - 41
SP - 87
EP - 90
JO - Materials Transactions
JF - Materials Transactions
SN - 0916-1821
IS - 1
ER -