Thermodynamics of the Fe-Nb-C-N system and the solubility of niobium carbonitrides in austenite

被引：31
作者：
Zajac, S [1 ]
Jansson, B
机构：
[1] Swedish Inst Met Res, Mech Met Dept, S-11428 Stockholm, Sweden
[2] SECO Tools AB, Met Dev, S-73782 Fagersta, Sweden
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 1998年 / 29卷 / 01期
关键词：
D O I：
10.1007/s11663-998-0019-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The solubility of niobium in microalloyed austenite has been analyzed using a thermodynamic description of the Fe-Nb-C-N system. The description of this system forms an important basis for calculations of precipitation of niobium carbonitrides in microalloyed steels. Previously presented thermodynamic descriptions are combined with-a new description of the Fe-Nb-N system, and equilibria in the quaternary system are calculated. New experiments were performed on Nb, Nb-Ti, and Nb-Ti-V microalloyed steels to confirm the calculated results. The results of theoretical calculations show good agreement with the experimental data on dissolution/precipitation of Nb carbonitrides in microalloyed austenite.
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页码：163 / 176
页数：14
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