Analysis of transformation stasis during the isothermal bainitic ferrite formation in Fe-C-Mn and Fe-C-Mn-Si alloys

被引：79

作者：

Chen, Hao ^{[1
]}

Zhu, Kangying ^{[2
]}

Zhao, Lie ^{[3
,4
]}

van der Zwaag, Sybrand ^{[1
]}

机构：

[1] Delft Univ Technol, Fac Aerosp Engn, NL-2629 HS Delft, Netherlands

[2] ArcelorMittal Res SA, F-57280 Maizieres Les Metz, France

[3] Mat Innovat Inst M2i, NL-2628 CD Delft, Netherlands

[4] Delft Univ Technol, Dept Mat Sci & Engn, NL-2628 CD Delft, Netherlands

来源：

ACTA MATERIALIA | 2013年 / 61卷 / 14期

关键词：

Solute drag; Diffusion; Interface migration; Transformation stasis; Bainite; INCOMPLETE TRANSFORMATION; SOLUTE DRAG; PROEUTECTOID FERRITE; PHASE-TRANSFORMATION; X ALLOYS; RETAINED AUSTENITE; TRIP STEELS; GROWTH; KINETICS; ELEMENTS;

D O I：

10.1016/j.actamat.2013.05.034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The "transformation stasis" phenomenon during the isothermal bainitic ferrite formation has been investigated in a series of Fe-C Mn and Fe-C-Mn-Si alloys. The Gibbs energy balance (GEB) approach is applied to model the transformation stasis phenomenon, and theoretical predictions are compared with experimental observations. The good agreement over several alloy systems demonstrates that the transformation stasis is caused by diffusion of alloying elements into the migrating austenite/bainitic ferrite interfaces. It is found that the occurrence of transformation stasis in the Fe-C-Mn and Fe-C-Mn-Si alloys depends on the concentration of Mn, while the addition of Si has a negligible effect on transformation stasis. The GEB model clearly outperforms the diffusionless T-0 model. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：5458 / 5468

页数：11

共 56 条

[1] The incomplete transformation phenomenon in steel [J].

Aaronson, H. I. ;

Reynolds, W. T., Jr. ;

Purdy, G. R. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2006, 37A (06) :1731-1745

[2] Tests of the Zener theory of the incomplete transformation phenomenon in Fe-C-Mo and related alloys [J].

Aaronson, HI ;

Purdy, GR ;

Malakhov, DV ;

Reynolds, WT .

SCRIPTA MATERIALIA, 2001, 44 (10) :2425-2430

[3]

Bhadeshia H.K.D.H., 1992, Bainite in Steels

[4] THE MECHANISM OF BAINITE FORMATION IN STEELS [J].

BHADESHIA, HKDH ;

EDMONDS, DV .

ACTA METALLURGICA, 1980, 28 (09) :1265-1273

[5] In-situ determination of austenite and martensite formation in 13Cr6Ni2Mo supermartensitic stainless steel [J].

Bojack, A. ;

Zhao, L. ;

Morris, P. F. ;

Sietsma, J. .

MATERIALS CHARACTERIZATION, 2012, 71 :77-86

[6] DICTRA, a tool for simulation of diffusional transformations in alloys [J].

Borgenstam, A ;

Engström, A ;

Höglund, L ;

Ågren, J .

JOURNAL OF PHASE EQUILIBRIA, 2000, 21 (03) :269-280

[7] Metallographic evidence of carbon diffusion in the growth of bainite [J].

Borgenstam, Annika ;

Hillert, Mats ;

Agren, John .

ACTA MATERIALIA, 2009, 57 (11) :3242-3252

[8]

Cahn JW, 1962, ACTA METALL, V10, P117

[9] Analysis of ferrite growth retardation induced by local Mn enrichment in austenite created by prior interface passages [J].

Chen, Hao ;

van der Zwaag, Sybrand .

ACTA MATERIALIA, 2013, 61 (04) :1338-1349

[10] Indirect evidence for the existence of the Mn partitioning spike during the austenite to ferrite transformation [J].

Chen, Hao ;

van der Zwaag, Sybrand .

PHILOSOPHICAL MAGAZINE LETTERS, 2012, 92 (02) :86-92

← 1 2 3 4 5 6 →