Stress in Aluminium Alloys Measured Using Göbel Mirror as a Primary Beam Optics of X-Ray Diffractometer

Marianna Marciszko; Andrzej Baczmanski; Nacer Zazi; Jean Paul Chopart; Alain Lodini; Krzysztof Wierzbanowski

doi:10.4028/www.scientific.net/MSF.681.393

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HomeMaterials Science ForumMaterials Science Forum Vol. 681Stress in Aluminium Alloys Measured Using Göbel...

Stress in Aluminium Alloys Measured Using Göbel Mirror as a Primary Beam Optics of X-Ray Diffractometer

Abstract:

Grazing incidence geometry, called MGID-sin²y, was applied to measure surface stresses in very thin layers (depth of a few mm) of Al-Mg alloy samples subjected to different thermal and mechanical treatments. The Göbel mirror was used to parallelize the incident X-ray beam. Perfect collimation of the beam significantly increases accuracy of determined peak position and consequently allows to measure low stresses in surface layers.