Identification of Crystalline Behavior on Macroscopic Response and Local Strain Field Analysis: Application to Alpha Zirconium Alloys

    Volume 1, Issue 9 (October 2004)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 4 October 2004

    Page Count: 17


    Gélébart, L
    Research Engineer, CEA Saclay /DEN/DMN/SRMA,

    Crépin, J
    Research Engineer, LMS Ecole Polytechnique,

    Dexet, M
    Ph.D. Student, CEA Saclay /DEN/DMN/SRMALMS Ecole Polytechnique,

    Sauzay, M
    Research Engineer, CEA Saclay /DEN/DMN/SRMA,

    Roos, A
    Research Engineer, ONERA,

    (Received 16 March 2004; accepted 18 June 2004)

    Abstract

    The purpose of this paper is to present an identification method of the crystalline behavior of a material from a mechanical test performed on a polycrystalline sample. Because of the lack of knowledge about its crystalline behavior, this method is applied to a Zirconium alloy. This identification is based on a finite element modeling of the microstructure, and the results are compared to both the macroscopic and the microscopic experimental results. On the microscopic scale, the plastic strains are obtained using a micro-extensometry technique and the crystalline orientation using an EBSD technique. In order to validate the method, an identification is performed with only two free parameters: the evolutions of the macroscopic and microscopic errors appear to be regular and exhibit a well-defined minimum so that the parameters can be clearly identified.


    Paper ID: JAI12333

    DOI: 10.1520/JAI12333

    ASTM International is a member of CrossRef.

    Author
    Title Identification of Crystalline Behavior on Macroscopic Response and Local Strain Field Analysis: Application to Alpha Zirconium Alloys
    Symposium Zirconium in the Nuclear Industry: Fourteenth International Symposium, 2004-06-15
    Committee B10