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1. 发明授权

US5316597A A nuclear reactor comprising a reactor vessel and structural members made of an austenitic stainless steel having superior resistance to irradiation-induced segregation 失效
标题翻译：一种包括反应器容器和由奥氏体不锈钢制成的结构构件的核反应堆具有优异的抗辐照诱导偏析性
公开(公告)号：US5316597A
公开(公告)日：1994-05-31
申请号：US936647
申请日：1992-08-28
申请人： Takahiko Kato , Shinzo Ikeda , Yasuhisa Aono , Masakiyo Izumiya , Kiyotomo Nakata , Isao Masaoka , Heishichiro Takahashi
发明人： Takahiko Kato , Shinzo Ikeda , Yasuhisa Aono , Masakiyo Izumiya , Kiyotomo Nakata , Isao Masaoka , Heishichiro Takahashi
IPC分类号： C22C38/00 , C22C38/40 , C22C38/46 , C22C38/48 , C22C38/50 , G21B1/11 , G21B1/17 , G21C5/00
CPC分类号： C22C38/50 , C22C38/40 , C22C38/46 , C22C38/48 , Y10S376/90
摘要： A nuclear reactor having structural members made of austenitic stainless steel which is corrosion-resistant in an environment of neutron irradiation, and can suppress stress corrosion cracking and embrittlement. At least one additive selected from the group consisting of Ti more than 0.2% by weight but not more than 0.6%, Zr more than 0.2% but not more than 1.14%, Hf more than 0.2% but not more than 2.24%, V more than 0.2% but not more than 0.64%, Nb more than 0.5% but not more than 1.17% and Ta more than 0.5% but not more than 2.27% is added to austenitic stainless steel containing Cr, Ni and so on, and said at least one exists in a solid-solution state. In addition, the steel has a wholly austenitic structure substantially free of carbide. In order to maintain the irradiation-induced segregation prevention effected by the addition element, the C content is limited to 0.01 to 0.008%, and the N content is limited to 0.001 to 0.0%. The irradiation-induced segregation, of the constituent elements, such as Cr and Ni, occurring in a grain boundary under irradiation, can be prevented, and the deterioration of the corrosion resistance of the material, as well as the embrittlement, can be prevented.
摘要翻译：具有由奥氏体不锈钢制成的结构构件的核反应堆，其在中子照射环境中耐腐蚀，并且可以抑制应力腐蚀开裂和脆化。至少一种添加剂选自Ti大于0.2重量％但不大于0.6重量％，Zr大于0.2重量％但不大于1.14重量％，Hf大于0.2重量％但不大于2.24重量％，V多超过0.2％但不超过0.64％，Nb超过0.5％但不超过1.17％，Ta含量超过0.5％但不超过2.27％，则含有Cr，Ni等奥氏体不锈钢，在固溶状态下最少存在。此外，钢具有基本上不含碳化物的完全奥氏体结构。为了保持由添加元素进行的照射诱导的偏析防止，C含量限于0.01〜0.008％，N含量限定在0.001〜0.0％。可以防止在照射下的晶界中发生的诸如Cr和Ni的组成元素的照射诱导的偏析，并且可以防止材料的耐腐蚀性劣化以及脆化。

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