Predicting the Austenite Fraction After Intercritical Annealing in Lean Steels as a Function of the Initial Microstructure

被引：12

作者：

Chen, Hao ^{[1
]}

Xu, Xiaojun ^{[1
]}

Xu, Wei ^{[1
]}

Van der Zwaag, Sybrand ^{[1
]}

机构：

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

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2014年 / 45A卷 / 04期

关键词：

IDENTIFYING KINETIC TRANSITIONS; FERRITE PHASE-TRANSFORMATION; GROWTH; MN; PARAEQUILIBRIUM; ENRICHMENT; DIFFUSION; SYSTEMS;

D O I：

10.1007/s11661-014-2186-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The final fractions of austenite after the isothermal austenite-to-ferrite transformation and its reverse transformations (including the martensite-to-austenite and the pearlite + ferrite-to-austenite transformations) in the intercritical annealing region have been studied using full equilibrium (FE), paraequilibrium (PE), and local equilibrium (LE) calculations and experiments. The LE model predictions are in a very good agreement with the experimental results, while the FE and PE model predictions deviate significantly. It is also found that the LEP/LENP transition for the austenite-to-ferrite transformation deviates from those of its reverse transformations. The magnitude of deviation increases with the increasing Mn concentration.

引用

页码：1675 / 1679

页数：5

共 22 条

[1] 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

[2] Application of the stagnant stage concept for monitoring Mn partitioning at the austenite-ferrite interface in the intercritical region for Fe-Mn-C alloys [J].

Chen, Hao ;

Xu, Wei ;

Goune, Mohamed ;

van der Zwaag, Sybrand .

PHILOSOPHICAL MAGAZINE LETTERS, 2012, 92 (10) :547-555

[3] 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

[4] Application of cyclic partial phase transformations for identifying kinetic transitions during solid-state phase transformations: Experiments and modeling [J].

Chen, Hao ;

Appolaire, Benoit ;

van der Zwaag, Sybrand .

ACTA MATERIALIA, 2011, 59 (17) :6751-6760

[5] Consideration of the growth mode in isochronal austenite-ferrite transformation of ultra-low-carbon Fe-C alloy [J].

Chen, Hao ;

Liu, Yongchang ;

Yan, Zesheng ;

Li, Yanli ;

Zhang, Lifang .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2010, 98 (01) :211-217

[6] DIFFUSION-CONTROLLED PRECIPITATE GROWTH IN TERNARY-SYSTEMS 1 [J].

COATES, DE .

METALLURGICAL TRANSACTIONS, 1972, 3 (05) :1203-+

[7] Austenite-to-ferrite phase transformation in low-alloyed steels [J].

Gamsjäger, E ;

Svoboda, J ;

Fischer, FD .

COMPUTATIONAL MATERIALS SCIENCE, 2005, 32 (3-4) :360-369

[8] On the definitions of paraequilibrium and orthoequilibrium [J].

Hillert, M ;

Ågren, J .

SCRIPTA MATERIALIA, 2004, 50 (05) :697-699

[9]

Hillert M., 1953, INTERNAL REPORT

[10]

HULTGREN A, 1947, T AM SOC METAL, V39, P915

← 1 2 3 →