期刊
SCRIPTA MATERIALIA
卷 63, 期 8, 页码 795-798出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.06.019
关键词
Superalloys; Ruthenium; Chromium; Topologically close-packed (TCP) phase
类别
资金
- National Natural Science Foundation of China [50671015]
- New Century Excellent Talents in University
- Chinese Ministry of Education [NCET-06-0079]
- National Basic Research Program of China [2010CB631201]
- Discipline to Universities [B07003]
It is widely accepted that Ru suppresses the formation of topologically close-packed (TCP) phases in advanced Ni-based single crystal superalloys. However, in the current study, the addition of a large amount of Ru promoted the precipitation of TCP phases in a Ni-based single crystal superalloy containing a high level of Cr during thermal exposure at both 1000 and 1100 degrees C. It is suggested that the addition of Ru increased the degree of Re and Cr supersaturation in the gamma phase and resulted in the TCP phase formation. Crown Copyright (C) 2010 Published by Elsevier Ltd. on behalf of Acta Materialia Inc. All rights reserved,
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