Simultaneous effects of dissolved oxygen and applied stress on surface morphology of steels for cooling systems of blanket module in pressurized water
Simultaneous effects of dissolved oxygen and applied stress on surface morphology of steels for cooling systems of blanket module in pressurized water
复制标题
溶解氧和外加应力对加压水中毯子模块冷却系统用钢表面形貌的同时影响
DOI：
10.1016/j.fusengdes.2020.111681
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
H. Kishimoto
中科院分区：
文献类型：
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作者：
N. Nakazato;Hiroki Mima;T. Nemoto;Motoki Nakajima;T. Nozawa;H. Tanigawa;H. Kishimoto
水冷陶瓷增殖包层系统是日本有前途的设计，候选结构材料是低活化铁素体/马氏体钢F82H。另一方面，冷却系统的管道材料规划为奥氏体不锈钢SUS316 L。冷却水一般通过F82H冷却通道和SUS316 L冷却管道。它们各自适合的水化学条件不同，但有必要为它们找到一个合理的、通用的水化学条件。在聚变包层中，由于冷却水会受到中子的照射而引起水的辐解，因此认为水的辐解会改变冷却水的溶解氧浓度。本研究通过溶解氧浓度高达100 ppb的加压水浸泡试验，研究了溶解氧和外加应力对F82H和SUS316 L表面形貌的同时影响。
A water-cooled ceramic breeder blanket system is the Japanese promising design, and the candidate structural material is a reduced activation ferritic/martensitic steel, F82H. On the other hands, the material of the pipes of cooling system is planned to an austenitic stainless steel, SUS316 L. The cooling water will commonly flow both F82H cooling channels and SUS316 L cooling pipes. Appropriate water chemistry condition for each of them is different, but it is necessary to find out a reasonable and common water chemistry condition for both of them. In the fusion blanket, since the cooling water will be irradiated by neutrons and brought about the radiolysis of water, the dissolved oxygen concentration of the cooling water is considered to change by the radiolysis of water. This research provides the simultaneous effects of dissolved oxygen and applied stress on surface morphology of F82H and SUS316 L by the pressurized water immersion test in dissolved oxygen concentration up to 100 ppb.