Sodium effects on mechanical performance and consideration in high temperature structural design for advanced reactors

被引：27
作者：
Natesan, K. [1 ]
Li, Meimei [1 ]
Chopra, O. K. [1 ]
Majumdar, S. [1 ]
机构：
[1] Argonne Natl Lab, Argonne, IL 60439 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 2009年 / 392卷 / 02期
关键词：
316; STAINLESS-STEEL; LOW-CYCLE FATIGUE; MO STEEL; BEHAVIOR; ENVIRONMENT; CARBON;
D O I：
10.1016/j.jnucmat.2009.03.039
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Sodium environmental effects are key limiting factors in the high temperature structural design of advanced sodium-cooled reactors. A guideline is needed to incorporate environmental effects in the ASME design rules to improve the performance reliability over long operating times. This paper summarizes the influence of sodium exposure oil mechanical performance of selected austenitic stainless and ferritic/martensitic steels. Focus is on Type 316SS and mod.9Cr-1Mo. The sodium effects were evaluated by comparing the mechanical properties data in air and sodium. Carburization and decarburization were found to be the key factors that determine the tensile and creep properties of the steels. A beneficial effect of sodium exposure on fatigue life was observed under fully reversed cyclic loading in both austenitic stainless steels and ferritic/martensitic steels. However, when hold time was applied during cyclic loading, the fatigue life was significantly reduced. Based on the mechanical performance of the steels in sodium, consideration of sodium effects in high temperature structural design of advanced fast reactors is discussed. (C) 2009 Elsevier B.V. All rights reserved.
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收藏
页码：243 / 248
页数：6
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