期刊
ACTA MATERIALIA
卷 180, 期 -, 页码 199-217出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2019.09.016
关键词
Reactor pressure vessel; Irradiation embrittlement; Light water reactors; Life extension; Irradiation enhanced precipitation
资金
- US Department of Energy Office of Nuclear Energy's Materials Research Pathway for the Light Water Reactor Sustainability Program
- Advanced Test Reactor National Scientific User Facility through the U.S. Department of Energy, Office of Nuclear Energy under DOE Idaho Operations Office [DE-AC07-051D14517]
- US NRC
- Jean Claude Van Duysen of Electricite de France
- MRSEC Program of the NSF as a member of the NSF [DMR 1121053]
An improved Cluster Dynamics (CD) model of Cu rich and Mn-Ni-Si phase co-precipitation was developed to provide insights on the combined effects of the flux, fluence, temperature and alloy composition on irradiation enhanced precipitation leading to the embrittlement of reactor pressure vessel steels. The CD model was calibrated using a large microstructural database, and key parameters (e.g., interfacial energies) were fitted to minimize the predicted versus measured errors. The CD model was further validated against data not used in the fitting. The CD model predicts that: a) even 0.05% Cu reduces the Mn, Ni, Si precipitation threshold fluence; b) precipitate number densities increase, while their sizes and volume fractions, decrease with increasing flux; c) precipitate number densities and volume fractions increase with decreasing temperature; and, d) most of the matrix Cu precipitates in the early years of vessel service, while MnNiSi precipitates continue to grow up to very high extended life fluence. (C) 2019 Published by Elsevier Ltd on behalf of Acta Materialia Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据