Abstract：
:The long-standing challenge for forming Al-based BMGs and their matrix composites with a critical size larger than 1 mm have not been answered over the past three decades. In this paper, we reported formation of a series of BMG matrix composites which contain a high Al content up to 55 at.%. These composites can be cast at extraordinarily low cooling rates, compatible with maximum rod diameters of over a centimetre in copper mold casting. Our results indicate that proper additions of transition element Fe which have a positive heat of mixing with the main constituents La and Ce can appreciably improve the formability of the BMG matrix composites by suppressing the precipitation of Al(La,Ce) phase resulted from occurrence of the phase separation. However, the optimum content of Fe addition is strongly dependant on the total amount of the Al content in the Al-(CoCu)-(La,Ce) alloys.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Chen ZP,Gao JE,Wu Y,Wang H,Liu XJ,Lu ZPdoi
10.1038/srep03353subject
Has Abstractpub_date
2013-11-27 00:00:00pages
3353issn
2045-2322pii
srep03353journal_volume
3pub_type
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