Volume 5, Issue 9 (October 2008)

    Comparison of the Temperature and Pre-Aging Influences on the Low Cycle Fatigue and Thermo-Mechanical Fatigue Behavior of Copper Alloys (CuCoBe/CuCo2Be)

    (Received 4 December 2007; accepted 10 August 2008)

    Published Online: 2008

    CODEN: JAIOAD

      Format Pages Price  
    PDF Version 12 $25   ADD TO CART


    Abstract

    Typically thermo-mechanical fatigue (TMF) loaded components in power plants and steel works are made of copper alloys and are used in different applications (e.g. cooling systems in continuous casting, transformers). So a careful analysis and comparison of the experimental results and microstructure of thermo-mechanical loaded copper components, which are based on a systematic variation of the relevant influence factors, have been conducted to develop empirical models for computing the fatigue life. At specific low cycle fatigue (LCF) and thermo-mechanical fatigue test series on the copper alloys CuCoBe and CuCo2Be, the influence of pre-aging and temperature were investigated by means of the cyclic deformation and lifetime behavior. Based on stress-strain loops from LCF tests at different temperatures and aging conditions a non-linear combined material model was adopted to describe the cyclic deformation behavior. The simulated loading parameters of stress and strain were the basis for the subsequent lifetime simulation. A new energy based damage parameter for copper alloys has been developed to fulfill the requirements of lifetime simulation.


    Author Information:

    Koeberl, H.
    Chair of Mechanical Engineering, University of Leoben,

    Winter, G.
    CD-Laboratory for Fatigue Analysis, University of Leoben,

    Leitner, H.
    Chair of Mechanical Engineering, University of Leoben,

    Eichlseder, W.
    Chair of Mechanical Engineering, University of Leoben,

    CD-Laboratory for Fatigue Analysis, University of Leoben,


    Stock #: JAI101535

    ISSN: 1546-962X

    DOI: 10.1520/JAI101535

    ASTM International is a member of CrossRef.

    Author
    Title Comparison of the Temperature and Pre-Aging Influences on the Low Cycle Fatigue and Thermo-Mechanical Fatigue Behavior of Copper Alloys (CuCoBe/CuCo2Be)
    Symposium Seventh International ASTM/ESIS Symposium on Fatigue and Fracture Mechanics (36th ASTM National Symposium on Fatigue and Fracture Mechanics), 2007-11-16
    Committee E08