Electron backscattering diffraction analysis of secondary cleavage:: cracks in a reactor pressure vessel steel

被引：106

作者：

Nohava, J

Hausild, P

Karlík, M

Bompard, P

机构：

[1] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Dept Mat, Prague 12000 2, Czech Republic

[2] Ecole Cent Paris, LMSS Mat, F-92295 Chatenay Malabry, France

来源：

MATERIALS CHARACTERIZATION | 2002年 / 49卷 / 03期

关键词：

secondary cleavage crack; bainitic steel; EBSD; SEM;

D O I：

10.1016/S1044-5803(02)00360-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An analysis of secondary cleavage cracks in the A 508 C1.3 bainitic steel has been carried out using electron backscattering diffraction (EBSD) and scanning electron microscopy (SEM). The crystallographic orientation in the vicinity of the secondary cracks was studied. Secondary cleavage crack propagation planes were identified to be {100}, {110}, {121} and {123}. The secondary cracks propagated mostly in the range of one crystallographic grain (bainitic packet) and were arrested on high-angle twist type boundaries or in the upper bainite carbide colonies. The size of cleavage facets on the fracture surface corresponds to the size of the bainitic packets. (C) 2002 Elsevier Science Inc. All rights reserved.

引用

页码：211 / 217

页数：7

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