Institute of Physics of Materials AS CR, v. v. i. > Projects > Cyclic plastic deformation and fatigue properties of ultrafine-grained materials

Cyclic plastic deformation and fatigue properties of ultrafine-grained materials

Investigatorprof. RNDr. Ludvík Kunz, CSc., dr. h. c.
Number of ProjectGA ČR P108/10/2001
AgencyGrantová agentura České republiky
Duration2009-12-31 - 2014-12-30

Fatigue properties of ultrafine-grained materials exploitable in engineering practise are determined by the extent of damage caused by the cumulative cyclic plastic deformation both in their bulk and in their surface layers. The aim of the project is to elucidate the relevant mechanisms of plastic deformation in a number of different ultrafine-grained materials submitted to cyclic loading and thus to provide fundamental knowledge inevitable for further material design and application.


Fintová S., Kunz L.: Fatigue properties of magnesium alloy AZ91 processed by severe plastic deformation. J. Mech. Behav. Biomed. Mater. 42 (2015) 219-228


Kunz L., Lukáš P., Navrátilová L.: Strain localization and fatigue crack initiation in ultrafine-grained copper in high- and giga-cycle region. Int. J. Fatigue 58 (2014) 202-208

Kunz L., Fintová S.: Initiation of fatigue cracks in ultrafine-grained materials in high-cycle fatigue region. Procedia Eng. 74 (2014) 2-5

Fintová S., Kunz L.: Cyclic plastic behavior and fatigue life of AZ91 alloy in as-cast and ultra-fine grained state. Materials Engineering - Materialove inzinierstvo 21 (2014) 109-115

Kunz L., Fintová S.: Fatigue behaviour of AZ91 magnesium alloy in as-cast and severe plastic deformed conditions. Adv. Mater. Res. 891-892 (2014) 397-402

Fintová S., Pantělejev L., Kunz L.: Microstructure and Mechanical Properties of Ultrafine-Grained Magnesium AZ91 Alloy. Mater. Sci. Forum 782 (2014) 384-389

Fintová S., Kunz L.: Initiation of fatigue cracks in AZ91 Mg alloy processed by ECAP. Mater. Sci. Eng. A 63 (2014) 012159


Lukáš P., Kunz L., Navrátilová L., Bokůvka O.: Fatigue damage of ultrafine-grain copper in very-high cycle fatigue region. Mater. Sci. Eng. A 528 (2011) 7036-7040

Kunz L., Lukáš P., Pantělejev L., Man O.: Stability of ultrafine-grained structure of copper under fatigue. Procedia Eng. 10 (2011) 201-206