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Effect of cryogenic milling on Al7075 prepared by spark plasma sintering method

Published online by Cambridge University Press:  08 May 2017

Frantisek Lukac Open the ORCID record for Frantisek Lukac [Opens in a new window] ,
Tomas Chraska ,
Orsolya Molnarova ,
Premysl Malek  and
Jakub Cinert
Frantisek Lukac*
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Czech Republic
Tomas Chraska
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Czech Republic
Orsolya Molnarova
Affiliation:
Department of Physics of Materials, Mathematics and Physics Faculty, Charles University, Czech Republic
Premysl Malek
Affiliation:
Department of Physics of Materials, Mathematics and Physics Faculty, Charles University, Czech Republic
Jakub Cinert
Affiliation:
Institute of Plasma Physics, Academy of Sciences of the Czech Republic, Czech Republic Department of Electrotechnology, Faculty of Electrical Engineering, Czech Technical University, Czech Republic
*
a)Author to whom correspondence should be addressed. Electronic mail: lukac@ipp.cas.cz
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Abstract

Precipitation of secondary intermetallic phases in aluminium alloy Al7075 sintered by spark plasma sintering method from powders milled at room and cryogenic temperature was studied by X-ray powder diffraction. Deformation energy stored during cryogenic milling influences the precipitation in Al7075 alloy. High temperature X-ray diffraction experiment revealed the potential for further precipitation strengthening of samples prepared by spark plasma sintering of milled powders. It was established that the correction of absorption edge of metal Kβ-line filter used for laboratory sources greatly enhances the precision of quantitative Rietveld analysis as well as the determination of precipitates’ crystallite sizes.

Keywords

Intermetallic precipitatescryogenic millingpowder metallurgyultrafine-grained materialsAl7075
Type
Technical Articles
Information
Powder Diffraction , Volume 32 , Supplement S1 , September 2017 , pp. S221 - S224
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Copyright
Copyright © International Centre for Diffraction Data 2017 

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