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Facilitating effect of interfacial grooves on the rafting of nickel-based single crystal superalloy at high temperature
Qi, Dongqing; Wang, Li; Zhao, Peng; Qi, Lu; He, Suyun; Qi, Yang; Ye, Hengqiang; Zhang, Jian; Du, Kui
2019-07-01
Source PublicationSCRIPTA MATERIALIA
ISSN1359-6462
Volume167Pages:71-75
AbstractInterfacial grooving induced by dislocation stress takes place at gamma/gamma' interfaces during creep and aging of a third-generation nickel-based single crystal superalloy at 1120 degrees C. At the tip of grooves, gamma' phase is directly measured under compressive stress of interfacial dislocations, which likely drives the gamma'-forming elements out. The enrichment of Re and Co elements are detected in the tip. Meanwhile, gamma' precipitates coarsen much faster when more grooves form at the interfaces along the coarsening direction. This suggests that interfacial grooves facilitate the rafting of gamma' precipitates, especially under the creep stress. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordSuperalloy Interfaces Grooves Creep Aging
Indexed BySCI
Language英语
WOS IDWOS:000468720000015
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80973
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Qi, Dongqing,Wang, Li,Zhao, Peng,et al. Facilitating effect of interfacial grooves on the rafting of nickel-based single crystal superalloy at high temperature[J]. SCRIPTA MATERIALIA,2019,167:71-75.
APA Qi, Dongqing.,Wang, Li.,Zhao, Peng.,Qi, Lu.,He, Suyun.,...&Du, Kui.(2019).Facilitating effect of interfacial grooves on the rafting of nickel-based single crystal superalloy at high temperature.SCRIPTA MATERIALIA,167,71-75.
MLA Qi, Dongqing,et al."Facilitating effect of interfacial grooves on the rafting of nickel-based single crystal superalloy at high temperature".SCRIPTA MATERIALIA 167(2019):71-75.
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