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31. 发明授权

US06921442B2 Nickel-based heat-resistant alloy 失效
标题翻译：镍基耐热合金
公开(公告)号：US06921442B2
公开(公告)日：2005-07-26
申请号：US10399916
申请日：2001-10-24
申请人： Manabu Noguchi , Kei Matsuoka , Hiroshi Yakuwa , Akira Uchino , Hideyuki Sakamoto , Michio Okabe , Yoshiyuki Sawada , Shigeki Ueta
发明人： Manabu Noguchi , Kei Matsuoka , Hiroshi Yakuwa , Akira Uchino , Hideyuki Sakamoto , Michio Okabe , Yoshiyuki Sawada , Shigeki Ueta
IPC分类号： C22C19/03 , C22C19/05 , C22C30/00
CPC分类号： C22C19/053 , C22C19/055 , C22C19/058
摘要： The present invention relates to a Ni base alloy having sufficient strength at high temperatures and high corrosion resistance at high temperatures in a high-temperature composite corrosive environment in which chlorination or sulfidation occurs simultaneously with high-temperature oxidation, without excessive cooling or surface protection. According to the present invention, a Ni base alloy having high-temperature strength and corrosion resistance includes Cr in a range of from 25 to 40 weight %, Al in a range of from 1.5 to 2.5 weight %, C in a range of from 0.1 to 0.5 weight %, W of 15 weight % or less, Mn of 2.0 weight % or less, Si in a range of from 0.3 to 6 weight %, Fe of 5% or less, and Ni of rest except inevitable impurities. When strength at high temperatures is allowed to be small, W is in a range of from 0 to 8%, and Si is in a range of from 0.3 to 1% or from 1 to 6%. In order to enhance strength at high temperatures, W is in a range of from 8 to 15, and Si is in a range of from 0.3 to 1% or from 1 to 6%.
摘要翻译：本发明涉及在高温复合腐蚀环境中高温下具有足够的强度和高耐蚀性的Ni基合金，其中氯化或硫化与高温氧化同时发生，而没有过多的冷却或表面保护。根据本发明，具有高温强度和耐腐蚀性的Ni基合金包括Cr在25至40重量％的范围内，Al在1.5至2.5重量％的范围内，C在0.1的范围内至0.5重量％，W为15重量％以下，Mn为2.0重量％以下，Si为0.3〜6重量％，Fe为5％以下，除了不可避免的杂质以外的Ni。当高温下的强度变小时，W在0〜8％的范围内，Si在0.3〜1％的范围或1〜6％的范围。为了提高高温下的强度，W为8〜15，Si为0.3〜1％，1〜6％的范围。

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