volume 1 issue 1 pages 22-31

X-ray line broadening from filed aluminium and wolfram

Publication typeJournal Article
Publication date1953-01-01
SJR
CiteScore
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ISSN00016160
General Engineering
Abstract
Methods of analysis previously used in the interpretation of line broadening are discussed and are shown to be inadequate; more reliable methods being outlined. An analysis of published results using one of these methods suggests that the observed effects can be attributed to simultaneous small particle size and strain broadening. Measurements of the changes in intensity distribution have been made, using a Geiger counter spectrometer, in the spectra of cold worked aluminium and wolfram. The line breadths may be attributed to simultaneous small particle size and strain broadening, the latter predominating, particularly at the higher Bragg angles, and it is shown that the observed effects are produced by dislocations or some similar structural fault. The observed rise in the breadths of the high angle lines from annealed materials suggests that some dislocations remain after annealing. Fourier analysis of the line shapes in general merely confirm the results of the analysis of the line breadths, but in the case of the recovered specimens it suggests that the dislocations form into walls (“polygonization”). Les méthodes utilisées auparavant dans l'interprétation de l'élargissement des raies sont discutées et il est montré qu'elles sont inadéquates; des méthodes plus correctes sont indiquées. L'examen des résultats publiés, obtenus au moyen d'une des ces méthodes, fait croire que les effets observés peuvent être attribués en même temps à la petitesse des particules et à l'élargissement dû à la déformation. Les variations de la distribution d'intensité dans les spectres d'aluminium et de tungstène ont été mesurées au moyen d'un spectromètre à compteur Geiger. Les largeurs des raies peuvent être attribuées simultanéinent à la petitesse des particules et à l'élargissement dû à la déformation, cette dernière étant la plus importante, surtout aux plus grands angles de Bragg, il est aussi démontré que les effets observés sont dûs aux dislocations ou à un autre défaut structural, similaire. L'augmentation observée dans la largeur des raies à grand angle obtenues des matériaux recuits, fait croire, qu'une partie des dislocations reste après recuit. L'analyse de Fourier de la forme des raies confirme en général les résultats d'analyse de la largeur des raies, mais dans le cas des échantillons qui ont subi un recuit de restauration, cela conduit plutôt à la conclusion que les dislocations se rangent en plans (polygonisation). Die analytischen Methoden, die bisher zur Auswertung von Messungen der Linienverbreiterung von Röntgeninterferenzen benutzt wurden, werden diskutiert. Es wird gezeigt, dass sie unzureichend sind, und zuverlässige Methoden werden beschrieben. Analysiert man die in der Literatur veröffentlichten Daten nach einer dieser Methoden, so scheint die beobachtete Verbreiterung sowohl auf den Effekt der kleinen Teilchengrösse als auch auf innere Spannungen zurück zu gehen. Veränderungen in der Intensitätsyerteilung der Feinstrukturdiagramme von kaltbearbeitetem Aluminium und Wolfram wurden mit Hilfe eines Zählrohr-Spektronometers gemessen. Die Linienverbreiterung kann auf die gleichzeitig vorhandenen Effekte kleiner Teilchengrösse und innerer Spannungen zurückgeführt werden; der Einfluss der Spannungen überwiegt, vor allem bei grossen Reflexionswinkeln. Es wird gezeigt, dass die beobachteten Effekte durch Versetzungen (“dislocations”) oder ähnliche Kristallbaufehler hervorgerufen werden. Die beobachtete Verbreiterung der Linien grosser Reflexionswinkel in geglühten Materialien deutet darauf hin, dass nach der Glühung noch einige Versetzungen (“dislocations”) im Material zurückbleiben. Fourieranalyse der allgemeinen Linienform bestätigt nur die Resultate der Analyse der Linienverbreiterung. Allein bei erholten Proben deutet sie darauf hin, dass sich die Versetzungen (“dislocations”) zu Wänden zusammenschliessen (“Polygonisation”).
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GOST |
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GOST Copy
Williamson G. K., HALL W. H. X-ray line broadening from filed aluminium and wolfram // Acta Metallurgica. 1953. Vol. 1. No. 1. pp. 22-31.
GOST all authors (up to 50) Copy
Williamson G. K., HALL W. H. X-ray line broadening from filed aluminium and wolfram // Acta Metallurgica. 1953. Vol. 1. No. 1. pp. 22-31.
RIS |
Cite this
RIS Copy
TY - JOUR
DO - 10.1016/0001-6160(53)90006-6
UR - https://doi.org/10.1016/0001-6160(53)90006-6
TI - X-ray line broadening from filed aluminium and wolfram
T2 - Acta Metallurgica
AU - Williamson, G. K.
AU - HALL, W H
PY - 1953
DA - 1953/01/01
PB - Elsevier
SP - 22-31
IS - 1
VL - 1
SN - 0001-6160
ER -
BibTex |
Cite this
BibTex (up to 50 authors) Copy
@article{1953_Williamson,
author = {G. K. Williamson and W H HALL},
title = {X-ray line broadening from filed aluminium and wolfram},
journal = {Acta Metallurgica},
year = {1953},
volume = {1},
publisher = {Elsevier},
month = {jan},
url = {https://doi.org/10.1016/0001-6160(53)90006-6},
number = {1},
pages = {22--31},
doi = {10.1016/0001-6160(53)90006-6}
}
MLA
Cite this
MLA Copy
Williamson, G. K., and W H HALL. “X-ray line broadening from filed aluminium and wolfram.” Acta Metallurgica, vol. 1, no. 1, Jan. 1953, pp. 22-31. https://doi.org/10.1016/0001-6160(53)90006-6.