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公开(公告)号：US10472701B2
公开(公告)日：2019-11-12
申请号：US15405147
申请日：2017-01-12
发明人： Mototsugu Osaki , Shigeki Ueta , Kohki Izumi
摘要： The present invention relates to an Ni-based superalloy for hot forging, containing, in terms of % by mass, C: more than 0.001% and less than 0.100%, Cr: 11% or more and less than 19%, Co: more than 5% and less than 25%, Fe: 0.1% or more and less than 4.0%, Mo: more than 2.0% and less than 5.0%, W: more than 1.0% and less than 5.0%, Nb: 0.3% or more and less than 4.0%, Al: more than 3.0% and less than 5.0%, Ti: more than 1.0% and less than 3.0%, and Ta: 0.01% or more and less than 2.0%, with the balance being unavoidable impurities and Ni, in which the component composition satisfies the following two relationships: 3.5≤([Ti]+[Nb]+[Ta])/[Al]×10
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公开(公告)号：US10119182B2
公开(公告)日：2018-11-06
申请号：US15405204
申请日：2017-01-12
发明人： Mototsugu Osaki , Shigeki Ueta , Kohki Izumi
IPC分类号： C22C19/05
摘要： The present invention relates to an Ni-based superalloy for hot forging, containing, in terms of % by mass, C: more than 0.001% and less than 0.100%, Cr: 11% or more and less than 19%, Co: more than 5% and less than 25%, Fe: 0.1% or more and less than 4.0%, Mo: more than 2.0% and less than 5.0%, W: more than 1.0% and less than 5.0%, Nb: 2.0% or more and less than 4.0%, Al: more than 3.0% and less than 5.0%, and Ti: more than 1.0% and less than 3.0%, with the balance being unavoidable impurities and Ni, in which the component composition satisfies the following two relationships: 3.5≤([Ti]+[Nb])/[Al]×10
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公开(公告)号：US10378072B2
公开(公告)日：2019-08-13
申请号：US15154737
申请日：2016-05-13
IPC分类号： C21D6/02 , C21D6/00 , C21D6/04 , C21D7/13 , C21D1/25 , C22C38/06 , C22C38/44 , C22C38/50 , C22C38/52 , C22C38/00 , C22C38/02 , C22C38/46 , C22C38/48 , C22C38/54
摘要： The present invention relates to a maraging steel containing, in terms of mass %, 0.10≤C≤0.35, 9.0≤Co≤20.0, 1.0≤(Mo+W/2)≤2.0, 1.0≤Cr≤4.0, a certain amount of Ni, a certain amount of Al, and V+Nb≤0.60, with the balance being Fe and inevitable impurities, in which in a case of V+Nb≤0.020, the amount of Ni is 6.0≤Ni≤9.4 and the amount of Al is 1.4≤Al≤2.0, and in a case of 0.020
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公开(公告)号：US10344367B2
公开(公告)日：2019-07-09
申请号：US15708611
申请日：2017-09-19
发明人： Shuji Narita , Kohki Izumi , Kenta Yamashita , Shigeki Ueta
摘要： The present invention relates to a method for producing a precipitation strengthened Ni-based superalloy material having a predetermined composition, containing a blooming forging step of performing a forging at a temperature range of from Ts to Tm and performing an air cooling to form a billet having an average crystal grain size of #1 or more, an overaging thermal treatment step of heating and holding the billet at a temperature range of from Ts to Ts+50° C. and slowly cooling it to a temperature of Ts or lower, and a crystal grain fining forging step of performing another forging at a temperature range of from Ts−150° C. to Ts and performing another air cooling, in which Ts is from 1,030° C. to 1,100° C., and an overall average crystal grain size is #8 or more after the crystal grain fining forging step.
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公开(公告)号：US10337079B2
公开(公告)日：2019-07-02
申请号：US15154729
申请日：2016-05-13
IPC分类号： C22C38/10 , C22C38/44 , C22C38/52 , C21D6/02 , C21D6/00 , C21D6/04 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C21D1/25
摘要： The present invention relates to a maraging steel containing, in terms of mass %, 0.20≤C≤0.35, 9.0≤Co≤20.0, 1.0≤(Mo+W/2)≤2.0, 1.0≤Cr≤4.0, and a certain amount of Ni, with the balance being Fe and inevitable impurities, in which in a case where the contents of V and Nb satisfy V+Nb≤0.020 mass %, the amount of Ni is 6.0≤Ni≤9.4, and in which in a case where the contents of V and Nb satisfy 0.020 mass %
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公开(公告)号：US10260137B2
公开(公告)日：2019-04-16
申请号：US15708594
申请日：2017-09-19
发明人： Shuji Narita , Kohki Izumi , Kenta Yamashita , Shigeki Ueta
摘要： The present invention relates to a method for producing a precipitation strengthened Ni-based superalloy material having a predetermined composition, containing a blooming forging step of performing a forging at a temperature range of from Ts to Tm and performing an air cooling to form a billet having an average crystal grain size of #1 or more, an overaging thermal treatment step of heating and holding the billet at a temperature range of from Ts to Ts+50° C. and slowly cooling it to a temperature of Ts or lower, and a crystal grain fining forging step of performing another forging at a temperature range of from Ts−150° C. to Ts and performing another air cooling, in which Ts is from 1,030° C. to 1,100° C., and an overall average crystal grain size is #8 or more after the crystal grain fining forging step.
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公开(公告)号：US10260119B2
公开(公告)日：2019-04-16
申请号：US15154729
申请日：2016-05-13
IPC分类号： C22C38/10 , C22C38/44 , C22C38/52 , C21D6/02 , C21D6/00 , C21D6/04 , C21D1/25 , C22C38/46 , C22C38/48 , C22C38/00 , C22C38/02 , C22C38/06 , C22C38/50 , C22C38/54
摘要： The present invention relates to a maraging steel containing, in terms of mass %, 0.20≤C≤0.35, 9.0≤Co≤20.0, 1.0≤(Mo+W/2)≤2.0, 1.0≤Cr≤4.0, and a certain amount of Ni, with the balance being Fe and inevitable impurities, in which in a case where the contents of V and Nb satisfy V+Nb≤0.020 mass %, the amount of Ni is 6.0≤Ni≤9.4, and in which in a case where the contents of V and Nb satisfy 0.020 mass %
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公开(公告)号：US20160340752A1
公开(公告)日：2016-11-24
申请号：US15154729
申请日：2016-05-13
IPC分类号： C21D6/02 , C22C38/50 , C22C38/48 , C22C38/54 , C22C38/44 , C22C38/06 , C22C38/02 , C22C38/00 , C22C38/52 , C22C38/46
CPC分类号： C21D6/02 , C21D1/25 , C21D6/007 , C21D6/04 , C21D2211/008 , C22C38/002 , C22C38/02 , C22C38/06 , C22C38/10 , C22C38/105 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54
摘要： The present invention relates to a maraging steel containing, in terms of mass %, 0.20≦C≦0.35, 9.0≦Co≦20.0, 1.0≦(Mo+W/2)≦2.0, 1.0≦Cr≦4.0, and a certain amount of Ni, with the balance being Fe and inevitable impurities, in which in a case where the contents of V and Nb satisfy V+Nb≦0.020 mass %, the amount of Ni is 6.0≦Ni≦9.4, and in which in a case where the contents of V and Nb satisfy 0.020 mass %
摘要翻译： 本发明涉及以质量％计含有0.20≤C≤0.35,9.0≤Co≤20.0,0.0≤（Mo + W / 2）≤2.0,0.1≤Cr≤4.0的马氏体时效钢，并且一定量 的Ni，其余为Fe和不可避免的杂质，其中V和Nb的含量满足V +Nb≤0.020质量％的情况下，Ni的含量为6.0≤Ni≤D.4，在这种情况下 其中V和Nb的含量满足0.020质量％
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