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公开(公告)号：US20190316229A1
公开(公告)日：2019-10-17
申请号：US16471141
申请日：2017-12-05
发明人： Kiyohito ISHIDA , Toshihiro OMORI , Yutaka SATO , Koichi SAKAIRI , Kunihiro TANAKA , Tatsuya NAKAZAWA
摘要： The present invention relates to a Ni-based heat-resistant alloy including Ir: 5.0 mass % or more and 50.0 mass % or less, Al: 1.0 mass % or more and 8.0 mass % or less, W: 5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured γ′ phase present in the matrix, and including at least one of Zr: 0.01 mass % or more and 3.0 mase/0 or less and Hf: 0.01 mass % or more and 3.0 mass % or less. This Ni-based heat-resistant alloy has improved toughness over a conventional Ni-based heat-resistant alloy based on a Ni—Ir—Al—W-based alloy, and is also excellent in ambient-temperature strength.
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公开(公告)号：US20190338398A1
公开(公告)日：2019-11-07
申请号：US16469083
申请日：2017-12-04
发明人： Kiyohito ISHIDA , Toshihiro OMORI , Yutaka SATO , Koichi SAKAIRI , Kunihiro TANAKA , Tatsuya NAKAZAWA
IPC分类号： C22C19/05
摘要： The present invention relates to a Ni-based heat-resistant alloy including Ir: 5.0 mass % or more and 50.0 mass % or less, Al: 1.0 mass % or more and 8.0 mass % or less, W: 5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured γ′ phase present in the matrix, and including at least one of Ru: 0.8 mass % or more and 5.0 mass % or less and Re: 0.8 mass % or more and 5.0 mass % or less. This Ni-based heat-resistant alloy has improved toughness over a conventional Ni-based heat-resistant alloy based on a Ni—Ir—Al—W-based alloy, and is also excellent in ambient-temperature strength.
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公开(公告)号：US20170072458A1
公开(公告)日：2017-03-16
申请号：US15125491
申请日：2015-03-23
发明人： Akira YOSHIKAWA , Yuui YOKOTA , Muneki NAKAMURA , Kunihiro TANAKA , Tatsuya NAKAZAWA , Koichi SAKAIRI
CPC分类号： B22D11/005 , B22D11/00 , B22D11/001 , B22D11/11 , B22D21/005 , C22C1/02 , C22C5/04 , C22F1/18 , C30B15/08 , C30B29/02 , C30B29/52
摘要： The present invention provides a metal wire rod composed of iridium or an iridium alloy, wherein the number of crystal grains on any cross-section in a longitudinal direction is 2 to 20 per 0.25 mm2, and the Vickers hardness at any part is 200 Hv or more and less than 400 Hv. The iridium wire rod is a material which is produced by a μ-PD method, and has low residual stress and which has a small change in the number of crystal grains and hardness even when heated to a temperature equal to or higher than a recrystallization temperature (1200° C. to 1500° C.). The metal wire rod of the present invention is excellent in oxidative consumption resistance under a high-temperature atmosphere, and mechanical properties.
摘要翻译： 本发明提供一种由铱或铱合金构成的金属线材，其中纵向方向的任何截面上的晶粒数为2〜20 / 0.25mm 2，任何部分的维氏硬度为200Hv或 多于400 Hv。 铱线棒是通过μ-PD法制造的材料，残留应力低，即使在加热到再结晶温度以上的温度下，晶粒数和硬度也有小的变化 （1200℃〜1500℃）。 本发明的金属线棒在高温环境下的耐氧化消耗性优异，机械性能优良。
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公开(公告)号：US20170130310A1
公开(公告)日：2017-05-11
申请号：US15127348
申请日：2015-03-23
发明人： Kiyohito ISHIDA , Toshihiro OMORI , Yutaka SATO , Kunihiro TANAKA , Muneki NAKAMURA , Koichi SAKAIRI , Tatsuya NAKAZAWA
CPC分类号： C22F1/10 , C22C19/03 , C22C19/055 , C22C19/056 , C22C30/00
摘要： The present invention relates to a NiIr-base heat-resistant alloy which includes a Ni—Ir—Al—W-base alloy which contains Ir: 5.0 to 50.0 mass %, Al: 1.0 to 8.0 mass %, W: 5.0 to 20.0 mass %, and the balance is Ni, and a γ′ phase having an L12 structure precipitating and dispersing in a matrix as an essential strengthening phase, and a ratio (Y/X) of a peak intensity (Y) of (201) plane of the Ir3W phase observed in the range of 2θ=48° to 50° to a peak intensity (X) of (111) plane of the γ′ phase observed in the range of 2θ=43° to 45° in X-ray diffraction analysis is 0.5 or less. The alloy exhibits good high-temperature property stably.
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