Institute of Physics of Materials AS CR, v. v. i. > Projects > Effect of cycle asymmetry on short crack growth and fatigue life in advanced structural materials

Effect of cycle asymmetry on short crack growth and fatigue life in advanced structural materials

Investigatordoc. RNDr. Karel Obrtlík, CSc.
Number of Project106/01/0376
AgencyGrantová agentura České republiky
Duration2000-12-31 - 2003-12-30

Anotace
The project was directed to study the effect of positive mean stress and mean strain on the decisive stages and characteristics of the fatigue process in advanced structural materials (316L austenitic stainless steel and austempered ductile cast iron). Main attention was paid to the effect of cycle asymmetry on short crack growth mechanisms and kinetics, on lifetime and plastic strain localization in low cycle regime and on fatigue life and fatigue limit under high cycle fatigue cycling.

2005

Polák J., Zezulka P.: Short crack growth and fatigue life in austenitic-ferritic duplex stainless steel. Fatigue Fract. Eng. Mater. Struct. 28 (2005) 923-935


2004

Man J., Petrenec M., Obrtlík K., Polák J.: AFM and TEM study of cyclic slip localization in fatigued ferritic X10CrAl24 stainless steel. Acta Mater. 52 (2004) 5551-5561


2003

Man J., Obrtlík K., Polák J.: Study of surface relief evolution in fatigued 316L austenitic stainless steel by AFM. Mater. Sci. Eng. A 351 (2003) 123-132

Polák J., Man J., Obrtlík K.: AFM evidence of surface relief formation and models of fatigue crack nucleation. Int. J. Fatigue 25 (2003) 1027-1036

Polák J., Man J., Obrtlík K., Kruml T.: The shape of extrusions and intrusions produced by cyclic straining. Z. Metallkd. 94 (2003) 1327-1330


2002

Man J., Obrtlík K., Blochwitz C., Polák J.: Atomic force microscopy of surface relief in individual grains of fatigued 316L austenitic stainless steel. Acta Mater. 50 (2002) 3767-3780