The growth of ferrite in Fe-C-X alloys:: The role of thermodynamics, diffusion, and interfacial conditions

被引：55
作者：
Hutchinson, C. R.
Zurob, H. S.
Bréchet, Y.
机构：
[1] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S L47, Canada
[2] Thermodynam & Physicochim Met Lab, F-38402 St Martin Dheres, France
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 06期
基金：
加拿大自然科学与工程研究理事会;
关键词：
D O I：
10.1007/s11661-006-0114-y
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The growth of allotriomorphic ferrite from austenite in Fe-C-X alloys is studied. Two systems have been selected: the Fe-C-Ni system, in which the substitutional alloying element is expected to have a weak interaction with both the C and the moving interface, and the Fe-C-Mo system, in which these interactions are expected to be non-negligible. The ferrite growth kinetics was measured using two types of experiments: classical isothermal heat treatments and decarburization experiments. All of the experimental observations can be quantitatively rationalized using a model that describes an evolution in interfacial conditions from paraequilibrium (PE) to local equilibrium with negligible partitioning (LENP) during growth.
引用
收藏
页码：1711 / 1720
页数：10
相关论文
共 31 条
[1]   Coupled-solute drag effects on ferrite formation in Fe-C-X systems [J].
Aaronson, HI ;
Reynolds, WT ;
Purdy, GR .
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2004, 35A (04) :1187-1210
[2]   COMPUTER-SIMULATIONS OF THE AUSTENITE FERRITE DIFFUSIONAL TRANSFORMATIONS IN LOW ALLOYED STEELS [J].
AGREN, J .
ACTA METALLURGICA, 1982, 30 (04) :841-851
[3]   A REVISED EXPRESSION FOR THE DIFFUSIVITY OF CARBON IN BINARY FE-C AUSTENITE [J].
AGREN, J .
SCRIPTA METALLURGICA, 1986, 20 (11) :1507-1510
[4]  
Bellon P., 2002, PHYS REV B, V66, P1
[5]   CRITICAL-TEMPERATURE FOR GROWTH OF MARTENSITE [J].
BORGENSTAM, A ;
HILLERT, M ;
AGREN, J .
ACTA METALLURGICA ET MATERIALIA, 1995, 43 (03) :945-954
[6]   Massive transformation in the Fe-Ni system [J].
Borgenstam, A ;
Hillert, M .
ACTA MATERIALIA, 2000, 48 (11) :2765-2775
[7]   GROWTH-KINETICS OF GRAIN-BOUNDARY FERRITE ALLOTRIOMORPHS IN FE-C-X ALLOYS [J].
BRADLEY, JR ;
AARONSON, HI .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1981, 12 (10) :1729-1741
[8]   GROWTH KINETICS OF GRAIN-BOUNDARY FERRITE ALLOTRIOMORPHS IN FE-C ALLOYS [J].
BRADLEY, JR ;
RIGSBEE, JM ;
AARONSON, HI .
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1977, 8 (02) :323-333
[9]  
DARKEN LS, 1961, T METALL SOC AIME, V221, P654
[10]   A STEM method for investigating alloying element accumulation at austenite-ferrite boundaries in an Fe-C-Mo alloy [J].
Fletcher, HA ;
Garratt-Reed, AJ ;
Aaronson, HI ;
Purdy, GR ;
Reynolds, WT ;
Smith, GDW .
SCRIPTA MATERIALIA, 2001, 45 (05) :561-567
1234