Author:
Woo Wanchuck,Em Vyacheslav,Seong Baek-Seok,Shin Eunjoo,Mikula Pavol,Joo Jongdae,Kang Mi-Hyun
Abstract
The wavelength dependence of the maximum feasible penetration depth was studied for neutron diffraction stress measurements in ferritic and austenitic steels. This property was examined with wavelengths from the close vicinity of the Bragg edges, where the neutron total cross section has its local minimum and for which the scattering angles are convenient for stress measurements. These wavelengths (e.g.2.39 and 2.19 Å) are longer than those commonly used in stress measurements (∼1.6 Å). By using such wavelengths, configured by a focusing bent perfect crystal Si(111) monochromator, it was observed that the available total beam path length is about 85 mm in both ferritic and austenitic steels. This study provides specific information for choosing the instrument configuration suitable for most strain-scanning experimental tasks.
Publisher
International Union of Crystallography (IUCr)
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
44 articles.
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