期刊
COMPUTATIONAL MATERIALS SCIENCE
卷 171, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.commatsci.2019.109279
关键词
Ni-Al; Superalloys; Phase-field; Simulation; Plasticity; Rafting
资金
- Deutsche Forschungsgemeinschaft (DFG) [SFB/TR 103]
- Fundamental Research Program of Korea Institute of Materials Science [PNK6410]
- National Research Council of Science & Technology (NST), Republic of Korea [PNK6410] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
The role of coherency loss on rafting of superalloys under high temperature low stress creep conditions is investigated by phase-field crystal plasticity simulations. It is demonstrated that coalescence, critically depending on the state of coherency between precipitate and matrix is crucial to understand the rafting behavior of superalloys. An explicit mechanisms is developed predicting coherency loss based on the plastic activity in the matrix. The simulations are verified using experimental creep test results.
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