Detail publikace

Low cycle fatigue of austempered ductile cast iron alloyed with nickel at room and at depressed temperature

PETRENEC, M. BERAN, P. ŠMÍD, M. ROUPCOVÁ, P. TESAŘOVÁ, H.

Originální název

Low cycle fatigue of austempered ductile cast iron alloyed with nickel at room and at depressed temperature

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Total strain controlled tests have been performed on cylindrical specimens of austempered ductile cast iron (ADI) with the aim to compare cyclic plasticity and the fatigue life at temperatures 23 C and - 45 C. Microstructure and its quantities are documented using light microscope (image analysis) and neutron diffraction. The measurement of retained austenite by neutron diffraction before and after fatigue tests is used to discuss the cyclic stress-strain response. Cyclic hardening/softening curves, cyclic stress-strain curves and fatigue life curves were obtained for both temperatures. Cyclic stress-strain curve obtained at -45 C is shifted to higher stress amplitudes relative to room temperature curve. The fatigue life curves at both temperatures can be well approximated by the Manson-Coffin and Basquin laws. The Manson-Coffin curves are identical at both temperatures while the Basquin curve is shifted to longer fatigue life. The surface relief developed during fatigue was studied using SEM. Fatigue cracks initiated preferably from persistent slip markings at the interface of graphite nodule and the ausferrite matrix.

Klíčová slova

ADI with nickel alloying, low cycle fatigue, depressed temperature, neutron diffraction, fatigue crack initiation.

Autoři

PETRENEC, M.; BERAN, P.; ŠMÍD, M.; ROUPCOVÁ, P.; TESAŘOVÁ, H.

Rok RIV

2009

Vydáno

2. 9. 2009

Nakladatel

University of Žilina

Místo

Žilina

ISSN

1335-0803

Periodikum

Materiálové inžinierstvo

Ročník

16

Číslo

3a/2009

Stát

Slovenská republika

Strany od

1

Strany do

6

Strany počet

6

BibTex

@article{BUT49760,
  author="Martin {Petrenec} and Přemysl {Beran} and Miroslav {Šmíd} and Pavla {Roupcová} and Hana {Tesařová}",
  title="Low cycle fatigue of austempered ductile cast iron alloyed with nickel at room and at depressed temperature",
  journal="Materiálové inžinierstvo",
  year="2009",
  volume="16",
  number="3a/2009",
  pages="1--6",
  issn="1335-0803"
}