AUSTENITE-NONSTOICHIOMETRIC PRECIPITATE EQUILIBRIA IN MICROALLOYED STEELS .1. FE-TI-C AND FE-NB-C SYSTEMS

被引：19
作者：
BALASUBRAMANIAN, K
KIRKALDY, JS
机构：
[1] McMaster Univ, Hamilton, Ont, Can, McMaster Univ, Hamilton, Ont, Can
来源：
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 1986年 / 10卷 / 02期
关键词：
IRON AND STEEL METALLOGRAPHY - Austenite;
D O I：
10.1016/0364-5916(86)90021-0
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The austenite-transition metal carbide equilibrium has been calculated in Fe-Ti-C and Fe-Nb-C systems using the Wagner formalism for dilute ternary solutions and an extended regular solution model similar to the Hillert-Staffansson model for austenite and nonstoichiometric carbide phases respectively. Effects due to solute interactions and nonstoichiometry on (a) solubility of the carbide (b) equilibrium austenite composition and (c) mole fraction of carbide phase have been investigated in the above two systems. The calculated solubility curves agree well with the experimental results. The calculated minimum in the solubility curve agrees with the most recent result available for the Fe-Nb-C system.
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收藏
页码：187 / 202
页数：16
相关论文
共 27 条
[1]  
AVERIN VV, 1961, IZV NAUK SSSR METALL, V5, P3
[2]   THERMODYNAMICS OF NONSTOICHIOMETRIC B1 CARBIDES AND NITRIDES [J].
BALASUBRAMANIAN, K ;
KIRKALDY, JS .
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 1985, 9 (02) :103-115
[3]   THERMODYNAMICS AND PHASE-DIAGRAM OF FE-C SYSTEM [J].
CHIPMAN, J .
METALLURGICAL TRANSACTIONS, 1972, 3 (01) :55-&
[4]  
FELDMAN SE, 1974, CAN METALL QUART, V13, P625
[5]  
GREENBANK JC, 1971, J IRON STEEL I, V209, P986
[6]   REGULAR SOLUTION MODEL FOR STOICHIOMETRIC PHASES AND IONIC MELTS [J].
HILLERT, M ;
STAFFANSSON, LI .
ACTA CHEMICA SCANDINAVICA, 1970, 24 (10) :3618-+
[7]  
IRVINE KJ, 1967, J IRON STEEL I, V205, P171
[8]  
JOHANSEN TH, 1967, T METALL SOC AIME, V239, P1651
[9]  
KAUFMAN L, 1978, CALPHAD, V2, P55, DOI 10.1016/0364-5916(78)90005-6
[10]  
KOYAMA S, 1972, JAPAN I METALS J, V35, P1090
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