Dislocation-disclination model of heterogeneous nucleation of HCP-martensite

被引：4

作者：

Gutkin, MY ^{[1
]}

Mikaelyan, KN ^{[1
]}

Verijenko, VE ^{[1
]}

机构：

[1] Univ KwaZulu Natal, Sch Mech Engn, ZA-4041 Durban, South Africa

来源：

SCRIPTA MATERIALIA | 2001年 / 45卷 / 08期

关键词：

heterogenous phase transformation; martensite nucleation; theory of defects; grain boundaries; dislocations;

D O I：

10.1016/S1359-6462(01)01115-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A dislocation-disclination model is proposed describing heterogeneous nucleation of an embryo of hopmartensite at a tilt grain boundary segment containing some extrinsic dislocations. The corresponding energy gain is analysed in detail. The equilibrium and critical embryo sizes under external conditions of temperature and stress are examined and discussed. (C) 2001 Published by Elsevier Science Ltd. on behalf of Acta Materialia Inc.

引用

页码：939 / 945

页数：7

共 36 条

[1] The influence of deformation on the microstructure and transformation temperatures of Fe-Mn-Si-Cr-Ni shape memory alloys [J].

Arruda, GJ ;

Buono, VTL ;

Andrade, MS .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 273 :528-532

[2] Effects of thermal cycling and plastic deformation upon the Gibbs energy barriers to martensitic transformation in Fe-Mn and Fe-Mn-Co alloys [J].

Baruj, A ;

Guillermet, AF ;

Sade, M .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 273 :507-511

[3] INSITU OBSERVATIONS OF THE FORMATION OF MARTENSITE IN STAINLESS-STEEL [J].

BROOKS, JW ;

LORETTO, MH ;

SMALLMAN, RE .

ACTA METALLURGICA, 1979, 27 (12) :1829-1838

[4] DIRECT OBSERVATIONS OF MARTENSITE NUCLEI IN STAINLESS-STEEL [J].

BROOKS, JW ;

LORETTO, MH ;

SMALLMAN, RE .

ACTA METALLURGICA, 1979, 27 (12) :1839-1847

[5] THEORY AND EXPERIMENT OF MARTENSITIC NUCLEATION IN ZRO2 CONTAINING CERAMICS AND FERROUS-ALLOYS [J].

CHEN, IW ;

CHIAO, YH .

ACTA METALLURGICA, 1985, 33 (10) :1827-1845

[6] A THEORY OF THE TRANSFORMATION IN PURE COBALT [J].

CHRISTIAN, JW .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1951, 206 (1084) :51-64

[7] A TRANSITIONAL HCP PHASE IN THE GAMMA-]ALPHA-TRANSFORMATION IN CERTAIN FE-BASE ALLOYS [J].

CINA, B .

ACTA METALLURGICA, 1958, 6 (12) :748-762

[8] Gibbs energy modelling of the driving forces and calculation of the fcc/hcp martensitic transformation temperatures in Fe-Mn and Fe-Mn-Si alloys [J].

Cotes, S ;

Guillermet, AF ;

Sade, M .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 273 :503-506

[9] The effect of deformation on γ-ε martensitic transformation in an Fe-Mn-Mo alloy [J].

Durlu, TN .

JOURNAL OF MATERIALS SCIENCE, 1999, 34 (12) :2887-2890

[10] STACKING-FAULTS AND FCC (GAMMA)-]HCP (EPSILON) TRANSFORMATION IN 18-8-TYPE STAINLESS-STEEL [J].

FUJITA, H ;

UEDA, S .

ACTA METALLURGICA, 1972, 20 (05) :759-+

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