Publication detail

Biaxial Fatigue Fractures of Case-Hardened and High-Temperature-Coatings-Protected Specimens

SLÁMEČKA, K. ŠESTÁK, P. VOJTEK, T. KIANICOVÁ, M. HORNÍKOVÁ, J. ŠANDERA, P. POKLUDA, J.

Original Title

Biaxial Fatigue Fractures of Case-Hardened and High-Temperature-Coatings-Protected Specimens

English Title

Biaxial Fatigue Fractures of Case-Hardened and High-Temperature-Coatings-Protected Specimens

Type

journal article

Language

en

Original Abstract

In the contribution, the effect of various surface treatments on appearance of fracture surfaces and micromechanisms involved in the fracture process under bending, torsion and combined bending-torsion fatigue loading is discussed based on microscopical and 3D topographical observations and measurements. The studied materials include nitrided steel specimens featuring an inner fish-eye type of fracture and nickel-base superalloy specimens with protective diffusion and thermal barrier high-temperature coatings, for which the room-temperature failures approximate those following the shutdown of the engine.

English abstract

In the contribution, the effect of various surface treatments on appearance of fracture surfaces and micromechanisms involved in the fracture process under bending, torsion and combined bending-torsion fatigue loading is discussed based on microscopical and 3D topographical observations and measurements. The studied materials include nitrided steel specimens featuring an inner fish-eye type of fracture and nickel-base superalloy specimens with protective diffusion and thermal barrier high-temperature coatings, for which the room-temperature failures approximate those following the shutdown of the engine.

Keywords

Biaxial fatigue; bending; torsion; case-hardening; nitriding; high-temperature coatings; diffusion coatings; thermal barrier coatings; fractography

RIV year

2015

Released

01.10.2015

Pages from

145

Pages to

149

Pages count

5

URL