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公开(公告)号：US20240124956A1
公开(公告)日：2024-04-18
申请号：US18484049
申请日：2023-10-10
摘要： A TiAl alloy material containing: Al: 42.0 atomic % or more and 44.0 atomic % or less; Cu: 0.5 atomic % or more and 2.5 atomic % or less; and Nb: 3.0 atomic % or more and 7.0 atomic % or less, with the balance being Ti and unavoidable impurities, and lamellar grains have an average grain size of 20 μm or more and 200 μm or less.
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公开(公告)号：US20220134486A1
公开(公告)日：2022-05-05
申请号：US17435745
申请日：2020-03-23
IPC分类号： B23K35/02 , C22C38/54 , C22C38/52 , C22C38/04 , C22C38/02 , C22C38/44 , C22C38/46 , C22C38/48 , B23K9/173 , B23K35/30
摘要： Provided is a covered electrode for high-Cr ferritic heat-resistant steels with which it is possible to obtain weld metal that has the toughness required for weld parts and has excellent high temperature strength. The covered electrode for high-Cr ferritic heat-resistant steels includes a steel core and a coating agent that coats the core. The covered electrode comprises C, Si, Mn, Ni, Cr, Mo, V, Co, B, Nb, W, N, and Fe each in a predetermined range in the total mass of the covered electrode, contains a slag forming agent, and has a total of the W content and the Co content of 2.8 mass % or more.
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公开(公告)号：US20170067139A1
公开(公告)日：2017-03-09
申请号：US15123125
申请日：2015-03-04
发明人： Takeo MIYAMURA , Shigenobu NAMBA
IPC分类号： C22C38/54 , C22C38/48 , C22C38/44 , C21D6/00 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/50 , C22C38/42
CPC分类号： C22C38/54 , C21D6/004 , C21D9/0068 , C21D2211/001 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/58
摘要： An austenitic heat-resistant steel containing, by mass, 0.05-0.16% of C, 0.1-1% of Si, 0.1-2.5% of Mn, 0.01-0.05% of P, less than 0.005% of S, 7-12% of Ni, 16-20% of Cr, 2-4% of Cu, 0.1-0.8% of Mo, 0.1-0.6% of Nb, 0.1-0.6% of Ti, 0.0005-0.005% of B, 0.001-0.15% of N, and 0.005% or less of Mg and/or 0.005% or less of Ca, the amounts of Nb and Ti being 0.3% or above in total, with the remainder being made up by Fe and unavoidable impurities. The cumulative number density of a precipitate has a particle diameter of over 0 nm to 100 urn being 0.1-2.0/μm2, the precipitate particle diameter corresponding to half of the cumulative number density in the distribution of the cumulative number density and the precipitate particle diameter is 70 nm or less, the average hardness is 160 Hv or less, and the grain size number is 7.5 or above.
摘要翻译： 一种奥氏体系耐热钢，其含有0.05〜16％的C，0.1〜1％的Si，0.1〜2.5％的Mn，0.01〜0.05％的P，小于0.005％的S，7〜12％ 的Ni，16-20％的Cr，2-4％的Cu，0.1-0.8％的Mo，0.1-0.6％的Nb，0.1-0.6％的Ti，0.0005-0.005％的B，0.001-0.15％的 N和0.005％以下的Mg和/或0.005％以下的Ca，Nb和Ti的总量为0.3％以上，余量由Fe和不可避免的杂质构成。 沉淀物的累积数密度为0nm〜100μm的粒径为0.1〜2.0μm/μm2，在累积密度分布中的累计密度的一半的沉淀粒径和析出粒径 为70nm以下，平均硬度为160Hv以下，粒径为7.5以上。
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公开(公告)号：US20220134489A1
公开(公告)日：2022-05-05
申请号：US17430110
申请日：2020-02-13
IPC分类号： B23K35/30 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
摘要： A welding material may be suitable for high-Cr ferritic heat-resistant steels, and may suppress δ-ferrite occurrence, i.e., a soft structure, thereby improving the toughness, and enabling the achievement of a welded metal that has good cracking resistance and strength at high temperatures. Such welding materials for high-Cr ferritic heat-resistant steels may contain C, Si, Mn, S, Co, V, Nb, W, N, and O, respectively within specific ranges and limits Ni and P respectively to specific ranges, while containing from 8.0% by mass to 9.5% by mass (inclusive) of Cr and from 0.02% by mass to 0.20% by mass (inclusive) of Mo and additionally limiting Cu to less than 0.05% by mass, with the balance being made up of Fe and unavoidable impurities.
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公开(公告)号：US20200071804A1
公开(公告)日：2020-03-05
申请号：US16489492
申请日：2018-02-05
发明人： Zhuyao CHEN , Takeo MIYAMURA , Shigenobu NAMBA
摘要： The present invention relates to a maraging steel containing C: 0.02% (means mass %, hereinafter the same) or less, Si: 0.3% or less, Mn: 0.3% or less, Ni: 7.0 to 15.0%, Cr: 5.0% or less, Co: 8.0 to 12.0%, Mo: 0.1 to 2.0%, Ti: 1.0 to 3.0%, and Sol.Al: 0.01 to 0.2%, where the balance includes Fe and unavoidable impurities of P: 0.01% or less, S: 0.01% or less, N: 0.01% or less, and O: 0.01% or less. The parent phase of the maraging steel includes a martensitic phase. The parent phase contains a martensitic phase obtained by reverse transformation from a martensitic phase to an austenitic phase and then transformation from the austenitic phase, in an area fraction of 25% to 75%.
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6.发明公开公开(公告)号：US20240043978A1
公开(公告)日：2024-02-08
申请号：US18554683
申请日：2022-03-14
摘要： A TiAl alloy may be suitable for forging and may be used to produce a TiAl alloy material having excellent oxidation resistance, high-temperature creep strength, excellent hot forgeability, and can be subjected to die forging. The TiAl alloy may contain, in atomic percentage: Ti; Al in a range of from 42.0 to 43.6%; Cu in a range of from 0.5 to 2.0%; and Nb in a range of from 3.0 to 7.0%; and unavoidable impurities.
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公开(公告)号：US20170356070A1
公开(公告)日：2017-12-14
申请号：US15599497
申请日：2017-05-19
发明人： Takeo MIYAMURA , Shigenobu NAMBA , Zhuyao CHEN
CPC分类号： C22C38/105 , C21D1/18 , C21D6/004 , C21D6/007 , C21D6/02 , C21D2211/008 , C22C38/001 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/22 , C22C38/28 , C22C38/44 , C22C38/50 , C22C38/52
摘要： Disclosed is a mar aging steel containing, in combination in mass percent, C in a content from greater than 0% to 0.02%, Mn in a content from greater than 0% to 0.3%, Si in a content from greater than 0% to 0.3%, Ni in a content of 10% to 13%, Mo in a content of 0.5% to 3.5%, Co in a content of 9% to 12%, Cr in a content of 1.5% to 4.5%, Ti in a content of 1.5% to 4.5%, and Al in a content of 0.01% to 0.2%, where the total content of Mo and Ti is 5.0 mass percent or less, and the ratio ([Mo]/[Ti]) of the Mo content [Mo] to the Ti content [Ti] is 1.0 or less, with the remainder consisting of iron and inevitable impurities.
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公开(公告)号：US20130181804A1
公开(公告)日：2013-07-18
申请号：US13709598
申请日：2012-12-10
发明人： Takeo MIYAMURA , Hiroyuki Mitani , Hirofumi Hojo
CPC分类号： H01F1/01 , H01F1/344 , H01F3/08 , H01F41/02 , H01F41/0246 , Y10T428/12181
摘要： Disclosed is an iron-based soft magnetic powder obtained by preparing an iron-oxide-based soft magnetic powder through water atomization, and thermally reducing the iron-oxide-based soft magnetic powder. The iron-based soft magnetic powder has an average particle size of 100 μm or more and has an interface density of more than 0 μm−1 and less than or equal to 2.6×10−2 μm−1, where the interface density is determined from a cross-sectional area (μm2) and a cross-sectional circumference (μm) of the iron-based soft magnetic powder. The iron-based soft magnetic powder obtained by preparing an iron-oxide-based soft magnetic powder through water atomization and thermally reducing the iron-oxide-based soft magnetic powder, when used for the production of a dust core, can give a dust core having a low coercive force. Also disclosed is a duct core having a low coercive force and exhibiting superior magnetic properties.
摘要翻译： 公开了通过水雾化制备基于氧化铁的软磁性粉末，并且还原铁氧化物系软磁性粉末而得到的铁系软磁性粉末。 铁基软磁性粉末的平均粒径为100μm以上，并且界面密度大于0mum-1且小于或等于2.6×10-2mum-1，其中确定界面密度 从铁基软磁性粉末的横截面积（mum2）和横截面周长（mum）。 通过水雾化制备氧化铁系软磁性粉末而得到的铁系软磁性粉末，当用于制备粉尘芯时，可以将铁氧化物系软磁粉末热还原，得到粉芯 具有低的矫顽力。 还公开了具有低矫顽力并表现出优异的磁性能的管芯。
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