Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons

Tero Öberg, Kim Wallin

    Research output: Book/ReportReport

    1 Citation (Scopus)

    Abstract

    The use of nodular cast irons in components having high safety requirements has increased rapidly during last years. Casting permits a design where the stress concentrations are minimised and the cast material itself has shown to have good mechanical properties which can be obtained repeatedly. Although the conventional mechanical properties of nodular cast irons are well defined, the fracture behaviour is not because the fracture toughness and fatigue property data have until now been scarce. In this work different nodular cast irons were tested in order to investigate the thickness and temperature effects on the fracture toughness parameters KQ, delta and JIc . The fatigue parameters C, m and DELTA Kth were also examined. Although the microstructure forms the basis of the fracture behaviour of nodular cast irons, it was found that some deviations in fracture properties reported in the literature are due to insufficient testing conditions.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages40
    ISBN (Print)951-38-2665-1
    Publication statusPublished - 1986
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
    Number430
    ISSN0358-5077

    Fingerprint

    Nodular iron
    Fracture toughness
    Fatigue of materials
    Mechanical properties
    Thermal effects
    Stress concentration
    Casting
    Microstructure
    Testing

    Keywords

    • cast iron
    • nodular iron
    • fracture properties

    Cite this

    Öberg, T., & Wallin, K. (1986). Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 430
    Öberg, Tero ; Wallin, Kim. / Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons. Espoo : VTT Technical Research Centre of Finland, 1986. 40 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 430).
    @book{ee8108dd29b54157b24b646244207a3b,
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    abstract = "The use of nodular cast irons in components having high safety requirements has increased rapidly during last years. Casting permits a design where the stress concentrations are minimised and the cast material itself has shown to have good mechanical properties which can be obtained repeatedly. Although the conventional mechanical properties of nodular cast irons are well defined, the fracture behaviour is not because the fracture toughness and fatigue property data have until now been scarce. In this work different nodular cast irons were tested in order to investigate the thickness and temperature effects on the fracture toughness parameters KQ, delta and JIc . The fatigue parameters C, m and DELTA Kth were also examined. Although the microstructure forms the basis of the fracture behaviour of nodular cast irons, it was found that some deviations in fracture properties reported in the literature are due to insufficient testing conditions.",
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    year = "1986",
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    Öberg, T & Wallin, K 1986, Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 430, VTT Technical Research Centre of Finland, Espoo.

    Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons. / Öberg, Tero; Wallin, Kim.

    Espoo : VTT Technical Research Centre of Finland, 1986. 40 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 430).

    Research output: Book/ReportReport

    TY - BOOK

    T1 - Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons

    AU - Öberg, Tero

    AU - Wallin, Kim

    PY - 1986

    Y1 - 1986

    N2 - The use of nodular cast irons in components having high safety requirements has increased rapidly during last years. Casting permits a design where the stress concentrations are minimised and the cast material itself has shown to have good mechanical properties which can be obtained repeatedly. Although the conventional mechanical properties of nodular cast irons are well defined, the fracture behaviour is not because the fracture toughness and fatigue property data have until now been scarce. In this work different nodular cast irons were tested in order to investigate the thickness and temperature effects on the fracture toughness parameters KQ, delta and JIc . The fatigue parameters C, m and DELTA Kth were also examined. Although the microstructure forms the basis of the fracture behaviour of nodular cast irons, it was found that some deviations in fracture properties reported in the literature are due to insufficient testing conditions.

    AB - The use of nodular cast irons in components having high safety requirements has increased rapidly during last years. Casting permits a design where the stress concentrations are minimised and the cast material itself has shown to have good mechanical properties which can be obtained repeatedly. Although the conventional mechanical properties of nodular cast irons are well defined, the fracture behaviour is not because the fracture toughness and fatigue property data have until now been scarce. In this work different nodular cast irons were tested in order to investigate the thickness and temperature effects on the fracture toughness parameters KQ, delta and JIc . The fatigue parameters C, m and DELTA Kth were also examined. Although the microstructure forms the basis of the fracture behaviour of nodular cast irons, it was found that some deviations in fracture properties reported in the literature are due to insufficient testing conditions.

    KW - cast iron

    KW - nodular iron

    KW - fracture properties

    M3 - Report

    SN - 951-38-2665-1

    T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

    BT - Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons

    PB - VTT Technical Research Centre of Finland

    CY - Espoo

    ER -

    Öberg T, Wallin K. Fracture properties of ferritic, ferritic- pearlitic, pearlitic and bainitic nodular cast irons. Espoo: VTT Technical Research Centre of Finland, 1986. 40 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 430).