Detail publikace

Comparison of low cycle fatigue of ductile cast irons with different matrix alloyed with nickel

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

Originální název

Comparison of low cycle fatigue of ductile cast irons with different matrix alloyed with nickel

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) and ductile cast iron with the ferritic matrix, both alloyed with 2.75% Ni, with the aim to compare cyclic plasticity and the fatigue life at temperatures 23 C and - 45 C. Microstructure and its features are documented using light microscope (image analysis) and neutron diffraction. In ADI 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 and materials. 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 for both materials and temperatures while the Basquin curve is shifted to longer fatigue life for ADI. The surface relief developed during fatigue was studied using SEM. Fatigue cracks initiated preferably from persistent slip markings at the interface of graphite nodule.

Klíčová slova

Low cycle fatigue; Ferritic ductile cast iron; ADI; Nickel alloying; Neutron diffraction; Fatigue crack initiation; Depressed temperature

Autoři

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

Rok RIV

2010

Vydáno

6. 6. 2010

Nakladatel

Elsevier

Místo

Amsterdam

ISSN

1877-7058

Periodikum

Procedia Engineering

Ročník

2010

Číslo

2

Stát

Nizozemsko

Strany od

2307

Strany do

2316

Strany počet

9

BibTex

@article{BUT49761,
  author="Martin {Petrenec} and Hana {Tesařová} and Přemysl {Beran} and Miroslav {Šmíd} and Pavla {Roupcová}",
  title="Comparison of low cycle fatigue of ductile cast irons with different matrix alloyed with nickel",
  journal="Procedia Engineering",
  year="2010",
  volume="2010",
  number="2",
  pages="2307--2316",
  issn="1877-7058"
}