Fracture of single crystals having layered morphology / Panfilov P., Titov A.N. // International Journal of Fracture. - 2004. - V. 128, l. 1. - P. 153-157.

ISSN:

03769429

Type:

Article

Abstract:

The mechanism for relaxation of elastic energy in layered crystals (where interlayer glide is possible) under a point load is discussed. Titanium dichalcogenides are chosen as materials with covalent interatomic bonds, while the Ir-Sn compound is a metallic single crystal. All studied samples have layered morphology with similar parameters, such as the thickness of the sample and the thickness of a single layer. It was found that penetration of a diamond pyramid induces mechanical twins around the indent, whereas the appearance of cracks is a very rare phenomenon. In contrast with bulk samples, cracks in layered crystals move on complicated trajectories, which do not coincide with low-index crystallographic directions. Besides, their growth is limited by the surface single layer. Gliding between neighbouring layers effectively suppresses the propagation of cracks via the interlayer boundary. Glide may be considered an irreversible shift, which prevents the fracture of a material. © 2004 Kluwer Academic Publishers.

Author keywords:

Index keywords:

Crack propagation; Crystallography; Indentation; Morphology; Relaxation processes; Single crystals; Titanium compounds; Twinning; Interlayer glide; Layered crystals; Titanium dichalcogenides; Fracture

DOI:

10.1023/B:FRAC.0000040978.1513

Смотреть в Scopus:

https://www.scopus.com/inward/record.uri?eid=2-s2.0-4444279749&doi=10.1023%2fB%3aFRAC.0000040978.15130.9f&partnerID=40&md5=c78b21db3cc3c0ab1d746f71deb13e46

Соавторы в МНС:

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Другие поля

Поле	Значение
Link	https://www.scopus.com/inward/record.uri?eid=2-s2.0-4444279749&doi=10.1023%2fB%3aFRAC.0000040978.15130.9f&partnerID=40&md5=c78b21db3cc3c0ab1d746f71deb13e46
Affiliations	Urals University, Inst. of Phys./Appl. Math., Lenin Avenue 51, Ekaterinburg 620083, Russian Federation
References	Knott, J.F., (1973) Fundamentals of Fracture Mechanics, , Butterworth, London (Metallurgia, Moscow in Russian); Panfilov, P., Gagarin, Yu.L., Titov, A.N., On mechanical behaviour of single crystals of misfit layer compound (PbS)1.18(TiS2)2 (1998) J. Mater. Sci. Lett., 17, pp. 1049-1051; Panfilov, P., Gagarin, Yu.L., Yermakov, A., Crystallographic structure and mechanical behaviour of single crystals of Ir-Sn compound (1999) J. Mater Sci. Lett., 18, pp. 1649-1652
Correspondence Address	Panfilov, P.; Urals University, Inst. of Phys./Appl. Math., Lenin Avenue 51, Ekaterinburg 620083, Russian Federation
Language of Original Document	English
Abbreviated Source Title	Int. J. Fract.
Source	Scopus