Investigation on dynamic strain aging behaviour of ferritic-pearlitic ductile cast irons

Tutkimustuotos: Lehtiartikkeli

Tutkijat

Organisaatiot

  • Wärtsilä Finland
  • University of Oulu

Kuvaus

The influence of ferritic and pearlitic microstructures to dynamic strain aging (DSA) of ductile iron was investigated by means of strain-controlled cyclic tests performed at temperatures ranging from room temperature to 450°C, strain rates of 10−5 to 10−2 s−1 and at three different strain amplitudes along with tensile tests. Results indicated that all tested microstructures exhibit strain aging effects at elevated temperatures in some form, similar to ferritic-pearlitic steels. Additionally, static tensile tests show hardening at intermediate temperatures, minima in elongation and serrations in stress–strain curves. Cyclic data indicates DSA related changes in stresses at 250°C and 350°C at smaller strain rates, while the effects become more suppressed at higher strain rates. © 2019, © 2019 Institute of Materials, Minerals and Mining.

Yksityiskohdat

AlkuperäiskieliEnglanti
Sivut160-167
Sivumäärä8
JulkaisuMaterials Science and Technology
Vuosikerta36
Numero2
Varhainen verkossa julkaisun päivämäärä5 marraskuuta 2019
TilaJulkaistu - 22 tammikuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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