Microstructure evolution during cyclic tests on EUROFER 97 at room temperature. TEM observation and modelling

被引：46

作者：

Giordana, M. F. ^{[1
]}

Giroux, P. -F. ^{[2
]}

Alvarez-Armas, I. ^{[1
]}

Sauzay, M. ^{[2
]}

Armas, A. ^{[1
]}

Kruml, T. ^{[3
]}

机构：

[1] CONICET UNR, Inst Fis Rosario, RA-2000 Rosario, Santa Fe, Argentina

[2] DEN DANS DMN SRMA, Commissariat Energie Atom, F-91191 Gif Sur Yvette, France

[3] Acad Sci Czech Republ, Inst Phys Mat, CEITEC IPM, Brno 61662, Czech Republic

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 550卷

关键词：

Martensitic steels; Softening behaviour; Microstructural evolution; Polycrystalline modelling; MARTENSITIC STEEL; FATIGUE LOADINGS; LATH MARTENSITE; CREEP-FATIGUE; PART I; BEHAVIOR; DEFORMATION; STRESS; MORPHOLOGY; STABILITY;

D O I：

10.1016/j.msea.2012.04.038

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The 9% Cr quenched and tempered reduced-activation ferritic/martensitic steel EUROFER 97 is one of the candidates for structural components of fusion reactors. Isothermal, plastic strain-controlled, low-cycle fatigue tests are performed. Tested at room temperature, this steel suffers a cyclic softening effect linked to microstructural changes observed by transmission electron microscopy, such as the decrease of dislocation density inside subgrains or the growth of subgrain size. From the assumed mechanisms of softening a simple mean-field model based on crystalline plasticity is proposed to predict these microstructure evolutions during cycling and monotonic deformation. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：103 / 111

页数：9

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