Influence of crack orientation on the ductile-brittle behavior in Fe-3 wt.% Si single crystals

Journal Article · Mon Oct 15 00:00:00 EDT 2007 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2006.09.001· OSTI ID:21062157

Spielmannova, Alena ^[1]; Landa, Michal; Machova, Anna ^[1]; Hausild, Petr ^[2]; Lejcek, Pavel ^[3]

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1. Institute of Thermomechanics AS CR, Dolejskova 5, 18200 Prague 8 (Czech Republic)
2. Department of Materials, Faculty of Nuclear Science and Physical Engineering, CTU, Trojanova 13, 12000 Prague 2 (Czech Republic)
3. Institute of Physics AS CR, Na Slovance 2, 18221 Prague 8 (Czech Republic)

In this paper we present experimental results from fracture tests performed at room temperature on bcc iron-silicon single crystals with edge cracks of two different orientations (001)[110] and (- 110)[110]. The cracks were loaded under mode I. The fracture toughness and acoustic emission response were measured, and a fractographic analysis obtained via scanning electron microscopy was carried out. Experimental results confirm the basic predictions pertaining to the influence of crack orientation on crack stability from continuum modeling and molecular dynamic simulations in bcc iron.

• OSTI ID: 21062157
• Journal Information: Materials Characterization, Vol. 58, Issue 10; Other Information: DOI: 10.1016/j.matchar.2006.09.001; PII: S1044-5803(06)00265-8; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BCC LATTICES
CRACKS
EMISSION
FRACTURE PROPERTIES
FRACTURES
IRON
MONOCRYSTALS
SCANNING ELECTRON MICROSCOPY
SILICON
SIMULATION
TEMPERATURE RANGE 0273-0400 K