کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1447999 988661 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Neutron Larmor diffraction measurements for materials science
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Neutron Larmor diffraction measurements for materials science
چکیده انگلیسی

Neutron Larmor diffraction (LD) is a high-resolution diffraction technique based on the Larmor precession of polarized neutrons. In contrast to conventional diffraction, LD does not depend on the accurate measurement of Bragg angles, and thus the resolution is independent of the beam collimation and monochromaticity. At present, a relative resolution for the determination of the crystal lattice spacing d   of Δd/d∼10-6Δd/d∼10-6 is achieved, i.e. at least one order of magnitude superior to conventional neutron or X-ray techniques. This work is a first step to explore the application of LD to high-resolution problems in the analysis of residual stresses, where both the accurate measurement of absolute d values and the possibility of measuring type II and III stresses may provide additional information beyond those accessible by conventional diffraction techniques. Data obtained from Inconel 718 samples are presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Materialia - Volume 58, Issue 9, May 2010, Pages 3459–3467
نویسندگان
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