Secondary M6C precipitation in K40S cobalt-base alloy

Authors
Yang, FM Sun, XF Zhang, W Kang, YP Guan, HR Hu, ZQ
Citation
Fm. Yang et al., Secondary M6C precipitation in K40S cobalt-base alloy, MATER LETT, 49(3-4), 2001, pp. 160-164
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
49
Issue
3-4
Year of publication
2001
Pages
160 - 164
Database
ISI
SICI code
0167-577X(200106)49:3-4<160:SMPIKC>2.0.ZU;2-X
Abstract
Secondary M,C precipitation was investigated in K40S cobalt-base alloy afte r 100 h aging at 950 degreesC. The results showed that it was closely relat ed to the tungsten-rich zones inherited from the as-cast condition and the degeneration of the primary M7C3 carbide. A direct element reaction, 6M + C --> M6C, in which C comes from the decomposition of the M7C3 carbides, is suggested as the mechanism of secondary M6C precipitation in K40S alloy. (C ) 2001 Elsevier Science B.V. All rights reserved.