A New Kinetic Mode During the Austenite-to-Ferrite Transformation in Fe-Mn and Fe-Mn-Mo Alloys

被引：3

作者：

Zhang, Cong-Yu ^{[1
]}

Chen, Hao ^{[1
]}

Zhu, Jia-Ning ^{[1
]}

Zhang, Chi ^{[1
]}

Yang, Zhi-Gang ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, Key Lab Adv Mat, Minist Educ, Beijing 100084, Peoples R China

来源：

ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2020年 / 33卷 / 07期

基金：

北京市自然科学基金; 国家重点研发计划; 中国国家自然科学基金;

关键词：

Steel; Austenite; Ferrite; Diffusion; Solute drag; SOLUTE DRAG; C-MN; MIGRATING INTERFACES; PHASE-TRANSFORMATION; CARBON ENRICHMENT; TRANSITION; NI; SEGREGATION; DIFFUSION; GROWTH;

D O I：

10.1007/s40195-020-01026-y

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The kinetics of isothermal austenite (gamma)-to-ferrite (alpha) transformation at various temperatures in Fe-2Mn and Fe-2Mn-0.5Mo (wt%) alloys is investigated via dilatometry experiments and phase-field modeling. It was interestingly found that Mo addition has a marginal effect on the transformation kinetics. Besides the well-known partitioning and partitionless transformation modes, a new kinetic mode, in which interface migration is controlled by interfacial diffusion, was identified. The phase-field model with considering interfacial segregation could well predict the transformation kinetics and the kinetic mode transition.

引用

页码：975 / 980

页数：6

共 29 条

[1] MICROSCOPIC THEORY FOR ANTIPHASE BOUNDARY MOTION AND ITS APPLICATION TO ANTIPHASE DOMAIN COARSENING [J].

ALLEN, SM ;

CAHN, JW .

ACTA METALLURGICA, 1979, 27 (06) :1085-1095

[2] Models for numerical treatment of multicomponent diffusion in simple phases [J].

Andersson, Jan-Olof ;

Agren, John .

Journal of Applied Physics, 1992, 72 (04)

[3] Massive transformation in the Fe-Ni system [J].

Borgenstam, A ;

Hillert, M .

ACTA MATERIALIA, 2000, 48 (11) :2765-2775

[4] On the transition between grain boundary ferrite and bainitic ferrite in Fe-C-Mo and Fe-C-Mn alloys: The bay formation explained [J].

Chen, Hao ;

Yang, Zhigang ;

Zhang, Chi ;

Zhu, Kangying ;

van der Zwaag, Sybrand .

ACTA MATERIALIA, 2016, 104 :62-71

[5] Predicting the Effect of Mo, Ni, and Si on the Bainitic Stasis [J].

Chen, Hao ;

van der Zwaag, Sybrand .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (08) :3429-3437

[6] A general mixed-mode model for the austenite-to-ferrite transformation kinetics in Fe-C-M alloys [J].

Chen, Hao ;

van der Zwaag, Sybrand .

ACTA MATERIALIA, 2014, 72 :1-12

[7] Applications of semi-implicit Fourier-spectral method to phase field equations [J].

Chen, LQ ;

Shen, J .

COMPUTER PHYSICS COMMUNICATIONS, 1998, 108 (2-3) :147-158

[8] EVALUATION OF THE EFFECTS OF SEGREGATION ON AUSTENITE GRAIN-BOUNDARY ENERGY IN FE-C-X ALLOYS [J].

ENOMOTO, M ;

WHITE, CL ;

AARONSON, HI .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1988, 19 (07) :1807-1818

[9] Overview of the current issues in austenite to ferrite transformation and the role of migrating interfaces therein for low alloyed steels [J].

Goune, M. ;

Danoix, F. ;

Agren, J. ;

Brechet, Y. ;

Hutchinson, C. R. ;

Militzer, M. ;

Purdy, G. ;

van der Zwaag, S. ;

Zurob, H. .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2015, 92 :1-38

[10] Grain-boundary segregation and dynamic solute drag theory -: A phase-field approach [J].

Gronhagen, Klara ;

Agren, John .

ACTA MATERIALIA, 2007, 55 (03) :955-960

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