Relation between Medium-Range Order and Crystallization in Al-Ni Based Glass-Former Alloys

Abstract:

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The structure evolutions of Al83Ni10Ce5Si2, Al83Ni10Ce7, Al85Ni10Ce5, Al87Ni7Nd6 and Al87Ni5Co2Nd6 metallic glasses have been studied in detail. The studies establish a relation between the amount of medium range order (MRO) and crystallization mode. An increased amount of MRO suppresses the precipitation of primary fcc-Al and transforms the crystallization mode from a primary crystallization (Al87Ni7Nd6) to a eutectic crystallization (Al87Ni5Co2Nd6); while a decreasing amount of MRO promotes the precipitation of primary fcc-Al and transforms the crystallization mode from a eutectic crystallization (Al83Ni10Ce7 and Al85Ni10Ce5) to a primary crystallization (Al83Ni10Ce5Si2).

Info:

Periodical:

Advanced Materials Research (Volumes 146-147)

Edited by:

Sihai Jiao, Zhengyi Jiang and Jinglong Bu

Pages:

202-207

DOI:

10.4028/www.scientific.net/AMR.146-147.202

Citation:

S. H. Wang et al., "Relation between Medium-Range Order and Crystallization in Al-Ni Based Glass-Former Alloys", Advanced Materials Research, Vols. 146-147, pp. 202-207, 2011

Online since:

October 2010

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Price:

$35.00

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