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

    Volume 20, Issue 1 (January 1992)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 9


    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

    (Received 6 February 1991; accepted 10 June 1991)

    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.


    Paper ID: JTE11891J

    DOI: 10.1520/JTE11891J

    ASTM International is a member of CrossRef.

    Author
    Title Determination of Ductile-Brittle Transition Temperature (DBTT) in Dynamic Small Punch Test
    Symposium , 0000-00-00
    Committee E28