Influence of Beam Divergence on Pseudo-Strain Induced in Time-of-Flight Neutron Diffraction

Hiroshi Suzuki; Stefanus Harjo; Jun Abe; Koichi Akita

doi:10.4028/www.scientific.net/MSF.777.105

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HomeMaterials Science ForumMaterials Science Forum Vol. 777Influence of Beam Divergence on Pseudo-Strain...

Influence of Beam Divergence on Pseudo-Strain Induced in Time-of-Flight Neutron Diffraction

Abstract:

Effects of beam divergence on pseudo-strains observed in time-of-flight (TOF) neutron diffraction, which overlapped with the neutron attenuation effect and the surface-effect, were investigated. The through-surface strain scanning on an annealed steel plate was performed in different instrument resolutions by controlling the incident beam divergence. Typical pseudo-strain distributions were observed, but they showed different trend according to the beam divergence. Furthermore, it was demonstrated that the pseudo-strains induced in strain scanning measurements of coarse grain materials can be suppressed by controlling the incident beam divergence. Therefore, the incident beam divergence must be carefully considered to reduce pseudo-strains in time-of-flight neutron diffractometry.

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Periodical:

Materials Science Forum (Volume 777)

Pages:

105-111

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.777.105

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Online since:

February 2014

Authors:

Hiroshi Suzuki*, Stefanus Harjo, Jun Abe, Koichi Akita

Keywords:

Beam Divergence, Neutron Diffraction, Pseudo-Strain, Time-of-Flight

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References

[1] M.W. Johnson and M.R. Daymond, Neutron pulsed source instrumentation, in: M.E. Fitzpatrick and A. Lodini (Eds.), Analysis of Residual Stress by Diffraction using Neutron and Synchrotron radiation, Taylor & Francis, London, 2003, pp.146-169.

DOI: 10.1201/9780203608999.ch9

Google Scholar

[2] P. J. Webster, G. Mills, X. D. Wang, W. P. Kang and T. M. Holden: Journal of Neutron Research, 3 (1996) p.223.

Google Scholar

[3] X. L. Wang, S. Spooner and C. R. Hubbard: Journal of Applied. Crystallography, 30 (1998) p.52.

Google Scholar

[4] T. Pirling: Materials Science Forum, 347-349 (2000) p.107.

Google Scholar

[5] J. Ŝaroun, J. R. Kornmeier, M. Hofmann, P. Mikula and M. Vrána: Journal of Applied Crystallography, 46 (2013) p.628.

Google Scholar

[6] S. R. Creek, J. R. Santisteban and L. Edwards, Modelling pseudo strain effects induced in strain measurement, http://www.isis.stfc.ac.uk/instruments/engin-x/publications/modelling-pseudo- strain-effects-induced-in-strain-measurement6516.pdf.

Google Scholar

[7] H. Suzuki, S. Harjo, J. Abe, P. G. Xu, K. Aizawa and K. Akita: Nuclear Instruments and Methods in Physics Rresearch A, 715 (2013) p.28.

Google Scholar

[8] S. Harjo, T. Ito, K. Aizawa, H. Arima, J. Abe, A. Moriai, T. Iwahashi and T. Kamiyama, Materials Science Forum, 681 (2011) p.443.

DOI: 10.4028/www.scientific.net/msf.681.443

Google Scholar

[9] K. Lefmann and K. Nielsen: Neutron News, 10 (1999) p.20.

Google Scholar