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High-strength Al87Ni8La5 bulk alloy produced by spark plasma sintering of gas atomized powders

Published online by Cambridge University Press:  31 January 2011

Sergio Scudino ,
Kumar B. Surreddi ,
Hoang V. Nguyen ,
Gang Liu ,
Thomas Gemming ,
Mira Sakaliyska ,
Ji S. Kim ,
Jens Vierke ,
Markus Wollgarten  and
Jurgen Eckert
Sergio Scudino*
Affiliation:
IFW Dresden, Institut für Komplexe Materialien, D-01171 Dresden, Germany
Kumar B. Surreddi
Affiliation:
IFW Dresden, Institut für Komplexe Materialien, D-01171 Dresden, Germany
Hoang V. Nguyen
Affiliation:
Research Center for Machine Parts and Materials Processing, University of Ulsan, Namgu Mugeo 2-Dong, San 29, Ulsan 680-749, Republic of Korea
Gang Liu
Affiliation:
IFW Dresden, Institut für Komplexe Materialien, D-01171 Dresden, Germany; and State Key Laboratory for Mechanical Behavior of Materials and School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Mira Sakaliyska
Affiliation:
IFW Dresden, Institut für Komplexe Materialien, D-01171 Dresden, Germany
Ji S. Kim
Affiliation:
Research Center for Machine Parts and Materials Processing, University of Ulsan, Namgu Mugeo 2-Dong, San 29, Ulsan 680-749, Republic of Korea
Markus Wollgarten
Affiliation:
Helmholtz-Zentrum Berlin für Materialien und Energie (formerly Hahn Meitner Institute), D-14109 Berlin, Germany
Jurgen Eckert*
Affiliation:
IFW Dresden, Institut für Komplexe Materialien, D-01171 Dresden, Germany; and TU Dresden, Institut für Werkstoffwissenschaft, D-01062 Dresden, Germany
*
a) Address all correspondence to this author. e-mail: [email protected]
b) This author was an editor of this journal during the review and decision stage. For the JMR policy on review and publication of manuscripts authored by editors, please refer to http://www.mrs.org/jmr_policy.
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Abstract

In situ devitrification and consolidation of gas atomized Al87Ni8La5 glassy powders into highly dense bulk specimens was carried out by spark plasma sintering. Room temperature compression tests of the consolidated bulk material reveal remarkable mechanical properties, namely, high compression strength of 930 MPa combined with plastic strain exceeding 25%. These findings demonstrate that the combined devitrification and consolidation of glassy precursors by spark plasma sintering is a suitable method for the production of Al-based materials characterized by high strength and considerable plastic deformation.

Keywords

AlAmorphousPowder metallurgy
Type
Articles
Information
Journal of Materials Research , Volume 24 , Issue 9 , September 2009 , pp. 2909 - 2916
Copyright
Copyright © Materials Research Society 2009

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