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    Volume 20, Issue 1 (January 1992)

    Determination of Ductile-Brittle Transition Temperature (DBTT) in Dynamic Small Punch Test

    (Received 6 February 1991; accepted 10 June 1991)

    Published Online: 01 January 1992

    CODEN: JTEVAB

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    Abstract

    A dynamic small punch test technique is demonstrated for measuring the ductile-brittle transition temperature (DBTT) of aged Cr-Mo-V turbine rotor steels. Based on fracture energy measurements and fracture surface observations it is shown that the dynamic small punch test specimens exhibit a clear ductile-brittle transition behavior. The DBTT can be determined reliably by statistically analyzing the scatter in the fracture energy data and by defining the fracture appearance transition temperature. The measured values of DBTT are compared with those obtained from Charpy impact tests.


    Author Information:

    Joo, Y-H
    Research Institute for Fracture Technology, Tohoku University, Aza Aoba Aramaki Aobaku, Sendai

    Hashida, T
    Research Institute for Fracture Technology, Tohoku University, Aza Aoba Aramaki Aobaku, Sendai

    Takahashi, H
    Research Institute for Fracture Technology, Tohoku University, Aza Aoba Aramaki Aobaku, Sendai


    Stock #: JTE11891J

    ISSN:0090-3973

    DOI: 10.1520/JTE11891J

    Author
    Title Determination of Ductile-Brittle Transition Temperature (DBTT) in Dynamic Small Punch Test
    Symposium ,
    Committee E28