Effect of Er doping on glass-forming ability of Co50Cr15Mo14C15B6 alloy

Bulk glass formation of the Co–Cr–Mo–C–B–Er alloy system was investigated in this paper. The Co50Cr15Mo14C15B6 (at.%) alloy could be cast into fully glassy rod with a diameter up to 2 mm. By adding 2 at.% Er to this alloy, the critical diameter for glass formation reached 10 mm. The excellent glass...

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Bibliographic Details
Published inJournal of materials research Vol. 21; no. 4; pp. 958 - 961
Main Authors Men, H., Pang, S.J., Zhang, T.
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 01.04.2006
Subjects
Rapid solidification
Scanning electron microscopy (SEM)
Second phases
Second phases
Rapid solidification
Scanning electron microscopy (SEM)
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Summary:Bulk glass formation of the Co–Cr–Mo–C–B–Er alloy system was investigated in this paper. The Co50Cr15Mo14C15B6 (at.%) alloy could be cast into fully glassy rod with a diameter up to 2 mm. By adding 2 at.% Er to this alloy, the critical diameter for glass formation reached 10 mm. The excellent glass formability of the Er-doped alloy was mainly attributed to its relatively large reduced glass transition temperature of 0.61, near-eutectic composition, and the necessity of redistribution of the Er atoms for precipitation of crystalline Co6Mo6C phase in the undercooled liquid on cooling.
Bibliography:ark:/67375/6GQ-JN1KC6Q8-J
PII:S088429140008242X
ArticleID:08242
istex:B29BB05D5168C42B5BF83D6EA1143C359BDE1980
ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2006.0109