TRACER DIFFUSION OF CARBON IN FE-NI-CR-C ALLOYS

被引：2

作者：

CERMAK, J ^{[1
]}

MEHRER, H ^{[1
]}

机构：

[1] ACAD SCI CZECH REPUBL,INST PHYS MAT,CR-61662 BRNO,CZECH REPUBLIC

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1994年 / 186卷 / 1-2期

关键词：

D O I：

10.1016/0921-5093(94)90317-4

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The diffusivity of C-14 in austenitic alloys Fe-19at.%Ni-11at.%Cr-xC (x=0.010, 0.047, 0.065, 0.130, 0.288 and 0.809 at.%) has been studied in the temperature interval from 773 to 1023 K using a serial sectioning method. It appears that the carbon diffusion coefficients D increase with increasing average carbon concentration in accordance with an analogous dependence reported in the literature for the case of non-alloyed austenite Fe-C. The variation in the diffusion characteristics with the composition is explained in terms of C trapping by Cr atoms, and in terms of a repulsive interaction between nearest-neighbour C pairs. An empirical relation for calculation of D at various temperatures and carbon concentrations is proposed.

引用

页码：171 / 175

页数：5

共 18 条

[1] A REVISED EXPRESSION FOR THE DIFFUSIVITY OF CARBON IN BINARY FE-C AUSTENITE
AGREN, J
[J]. SCRIPTA METALLURGICA, 1986, 20 (11): : 1507 - 1510
[2] BOSE SK, 1978, Z METALLKD, V69, P8
[3] CERMAK J, 1990, Z METALLKD, V81, P81
[4] ANOMALOUS DIFFUSION OF CARBON IN A 70/30 IRON-NICKEL ALLOY
CHAPMAN, LR
POWERS, DA
WUTTIG, M
[J]. SCRIPTA METALLURGICA, 1982, 16 (04): : 437 - 440
[5] DIFFUSION IN IRON, IRON SOLID-SOLUTIONS AND STEELS
KUCERA, J
STRANSKY, K
[J]. MATERIALS SCIENCE AND ENGINEERING, 1982, 52 (01): : 1 - 38
[6] DIFFUSION INTERACTION COEFFICIENTS BETA-C(I) AND THERMODYNAMIC INTERACTION COEFFICIENTS EPSILON-C(I) OF CARBON IN ALLOYED AUSTENITIC STEELS
KUCERA, J
STRANSKY, K
DOJIVA, J
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1990, 125 (01): : 75 - 82
[7] CONCENTRATION-DEPENDENCE OF THE DIFFUSIVITY OF CARBON IN (GAMMA-FE)-C AND IN NI-C SOLID-SOLUTIONS
KUCERA, J
MILLION, B
STRANSKY, K
VRESTAL, J
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1989, 110 : 209 - 216
[8] LNYANOJ VN, 1977, FIZ KHIM OBRAB MATER, V4, P101
[9] THE C-C INTERACTION ENERGY IN IRON CARBON SOLID-SOLUTIONS
MCLELLAN, RB
KO, C
[J]. ACTA METALLURGICA, 1987, 35 (08): : 2151 - 2156
[10] THE DIFFUSION OF CARBON IN AUSTENITE
MCLELLAN, RB
KO, C
[J]. ACTA METALLURGICA, 1988, 36 (03): : 531 - 537

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