Unconventional Performance of a Highly Luminous Strain/Stress Scanner for High Resolution Studies

Author:

Seong Baek Seok1,Em Vyacheslav T.1,Mikula Pavol2,Šaroun Jan2,Kang Mi Hyun1

Affiliation:

1. Korea Atomic Energy Research Institute (KAERI)

2. AS CR and Research Centre Řež, Ltd.

Abstract

In this paper properties of the dedicated neutron strain/stress diffractometer installed at the beam port ST-1 of HANARO reactor in KAERI which has been optimized at a small monochromator take-off angle, are described. Thanks to the employment of the horizontally focusing bent perfect crystal monochromator and the optimization procedure good resolution can be achieved and namely, the luminosity of the instrument can be considerably increased which permits us to enlarge the range of the material depth for residual strain/stress mapping. Moreover, new alternative of the diffractometer permits also to investigate some kinetic processes in polycrystalline materials running within few seconds.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference9 articles.

1. L. Pinchovius, V. Jung, E. Macherauch and O. Vöhringer, in Residual Stress Measurements by Means of Neutron Diffraction, Materials Science and Engineering Vol. 61 (1983), pp.3-50.

2. M.T. Hutchings, P.J. Withers, T.M. Holden and T. Lorentzen: Introduction to the Characterization of Residual Stress by Neutron Diffraction. Boca Raton, Florida: CRC Press, (2005).

3. G.E. Bacon in: Neutron Diffraction, Clarendon Press, Oxford (1975).

4. G. Caglioti: Thermal Neutron Diffraction, editted by B.T.M. Willis, Oxford University Press, Oxford, (1970), pp.14-33.

5. G. Cagliotti, A. Paoletti and F.P. Ricci: Nucl. Instrum. Methods Phys. Res. A Vol. 3 (1958), p.223.

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