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1.发明申请公开(公告)号：US20130330119A1
公开(公告)日：2013-12-12
申请号：US14001381
申请日：2012-02-24
IPC分类号： C22C38/00 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/02 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/58 , C22C38/46
CPC分类号： C22C38/001 , C21D1/18 , C21D8/0205 , C21D8/0226 , C21D2211/003 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , G21C13/087 , Y02E30/40 , Y10T403/477
摘要： A forged steel for components for nuclear power plants meets a specific chemical composition. The grain size number of a metal structure thereof is 4.5 to 7.0 in terms of ASTM grain size number. It is preferred that the content of N is 0.0100 mass % or more when the mass ratio (Al/N) of the content of Al to the content of N is 1.93 or more, and that the content of Al is 0.022 mass % or more when the mass ratio (Al/N) of the content of Al to the content of N is less than 1.93. The forged steel for components for nuclear power plants exhibits excellent strength, toughness and hydrogen cracking resistance even after being subjected to a stress relief heat treatment subsequent to welding.
摘要翻译： 核电厂部件用锻钢满足特定化学成分。 金属结构体的晶粒数按ASTM晶粒数计为4.5〜7.0。 当Al含量与N含量的质量比（Al / N）为1.93以上，Al的含量为0.022质量％以上时，优选N为0.0100质量％以上 当Al含量与N含量的质量比（Al / N）小于1.93时。 用于核电站组件的锻造钢即使在焊接之后进行应力消除热处理也表现出优异的强度，韧性和耐氢裂纹性。
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2.发明授权公开(公告)号：US09297056B2
公开(公告)日：2016-03-29
申请号：US14001381
申请日：2012-02-24
IPC分类号： C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/00 , C21D1/18 , C21D8/02 , G21C13/087 , C22C38/08 , C22C38/12 , C22C38/58 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/54
CPC分类号： C22C38/001 , C21D1/18 , C21D8/0205 , C21D8/0226 , C21D2211/003 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , G21C13/087 , Y02E30/40 , Y10T403/477
摘要： A forged steel for components for nuclear power plants meets a specific chemical composition. The grain size number of a metal structure thereof is 4.5 to 7.0 in terms of ASTM grain size number. It is preferred that the content of N is 0.0100 mass % or more when the mass ratio (Al/N) of the content of Al to the content of N is 1.93 or more, and that the content of Al is 0.022 mass % or more when the mass ratio (Al/N) of the content of Al to the content of N is less than 1.93. The forged steel for components for nuclear power plants exhibits excellent strength, toughness and hydrogen cracking resistance even after being subjected to a stress relief heat treatment subsequent to welding.
摘要翻译： 核电厂部件用锻钢满足特定化学成分。 金属结构体的晶粒数按ASTM晶粒数计为4.5〜7.0。 当Al含量与N含量的质量比（Al / N）为1.93以上，Al的含量为0.022质量％以上时，优选N为0.0100质量％以上 当Al含量与N含量的质量比（Al / N）小于1.93时。 用于核电站组件的锻造钢即使在焊接之后进行应力消除热处理也表现出优异的强度，韧性和耐氢裂纹性。
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公开(公告)号：US20060054253A1
公开(公告)日：2006-03-16
申请号：US11250492
申请日：2005-10-17
申请人： Nobuyuki Fujitsuna , Fujio Abe , Takehiko Itagaki , Masaaki Igarashi , Seiichi Muneki , Kazuhiro Kimura , Hideaki Kushima
发明人： Nobuyuki Fujitsuna , Fujio Abe , Takehiko Itagaki , Masaaki Igarashi , Seiichi Muneki , Kazuhiro Kimura , Hideaki Kushima
CPC分类号： C21D6/002 , C21D1/18 , C21D1/28 , C21D8/005 , C21D8/0205 , C21D2211/005 , C22C38/002 , C22C38/005 , C22C38/04 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , F28F19/06
摘要： The invention provides a ferritic heat-resistant steel having excellent high-temperature oxidation resistance, especially excellent steam oxidation-resistant characteristics. In high-Cr ferritic heat-resistant steel, ultra-fine oxide particles having a size of not larger than 1 μm are formed just below the oxide films and formed on the steel base, whereby the adhesiveness between the films and the base is enhanced. The ferritic heat-resistant steel contains Cr in an amount of from 8.0 to 13.0% by weight, and at least one of Rh and Ir in a total amount of from 0.3 to 5.0% by weight.
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