公开(公告)号：US5278881A

公开(公告)日：1994-01-11

申请号：US969520

申请日：1992-10-30

申请人： Takahiko Kato ,  Heishichiro Takahashi ,  Shinzoo Ikeda ,  Jiro Kuniya

发明人： Takahiko Kato ,  Heishichiro Takahashi ,  Shinzoo Ikeda ,  Jiro Kuniya

IPC分类号： C22C38/38 ,  G21C11/00

CPC分类号： C22C38/38 ,  Y10S376/90

摘要： An Fe-Cr-Mn alloy is disclosed which has the following composition by wt% and corrosion resistance of which is improved and deterioration in its strength is prevented at grain boundaries due to irradiation of high-energy particles such as neutrons: 5 to 40% of Mn, 5 to 18% of Cr, 2.0 to 12% of Al and the balance of Fe except for unavoidable impurities. In the alloy according to the present invention, Al is added to an Fe-Cr-Mn alloy by a restricted quantity as a main component element. As a result of the addition of Al, an alloy can be obtained in which lowering of concentration of Cr at grain boundaries due to irradiation of high-energy particles such as neutrons can be prevented or concentration of the solutes can be raised.

摘要翻译： 公开了一种Fe-Cr-Mn合金，其具有以下重量％的组成，并且耐腐蚀性得到改善，并且由于诸如中子的高能粒子的照射而在晶界处防止了其强度的劣化：5至40％ 的Mn，5〜18％的Cr，2.0〜12％的Al，剩余的Fe除了不可避免的杂质。 在根据本发明的合金中，通过限制量将Fe添加到Fe-Cr-Mn合金作为主要成分元素。 作为添加Al的结果，可以获得可以防止由于诸如中子的高能粒子的照射引起的晶界Cr浓度降低的合金或可以提高溶质的浓度的合金。

公开(公告)号：US5203932A

公开(公告)日：1993-04-20

申请号：US669380

申请日：1991-03-14

申请人： Takahiko Kato ,  Akira Yoshinari ,  Shinzoo Ikeda ,  Michiyoshi Yamamoto ,  Hideyo Kodama ,  Hisashi Sato ,  Masakiyo Izumiya ,  Yasuhisa Aono

发明人： Takahiko Kato ,  Akira Yoshinari ,  Shinzoo Ikeda ,  Michiyoshi Yamamoto ,  Hideyo Kodama ,  Hisashi Sato ,  Masakiyo Izumiya ,  Yasuhisa Aono

IPC分类号： C22C30/00 ,  C22C38/00 ,  C22C38/40 ,  C22C38/44 ,  C30B11/00 ,  G21C3/07 ,  G21C5/00

CPC分类号： G21C3/07 ,  C22C38/40 ,  C30B11/00 ,  C30B29/52 ,  G21Y2002/103 ,  G21Y2002/104 ,  G21Y2004/10 ,  G21Y2004/40 ,  Y02E30/40

摘要： An austenitic steel comprising Ni of 9-30%, Cr of 10-23%, and Fe of at least 45%, is characterized in comprising enough Cr and Ni to form whole austenitic structure in the equilibrium diagram at 700.degree. C., having austenitic phase at room temperature, and the austenitic phase is a single crystal, and has superior resistance against stress. The austenitic steel preferably comprises C.ltoreq.0.1%, Si.ltoreq.1%, Mn.ltoreq.2%, Ni 9-15%, Cr 16-18.5%, and at least one of elements selected from the group of Mo 1-3%, Ti 0.05-1%, and Nb 0.1-1.5%. The alloy is useful as a material for members of a reactor core of a nuclear reactor.