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公开(公告)号:US20130130058A1
公开(公告)日:2013-05-23
申请号:US13429966
申请日:2012-03-26
申请人: Atsuro ISEDA , Yoshitaka Nishiyama , Masahiro Seto , Satomi Yamamoto , Hiroyuki Hirata , Yasutaka Noguchi , Mitsuru Yoshizawa , Hiroshi Matsuo
发明人: Atsuro ISEDA , Yoshitaka Nishiyama , Masahiro Seto , Satomi Yamamoto , Hiroyuki Hirata , Yasutaka Noguchi , Mitsuru Yoshizawa , Hiroshi Matsuo
IPC分类号: B32B15/01
CPC分类号: C22C38/42 , C21D6/004 , C21D7/06 , C21D9/08 , C22C38/001 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , Y10T428/12653
摘要: To provide an austenitic stainless steel which has an excellent high-temperature corrosion thermal fatigue cracking resistance.An austenitic stainless steel containing, by mass %, Cr: 15.0 to 23.0%, and Ni: 6.0 to 20.0%, wherein a near-surface portion is covered with a worked layer with high energy density having an average thickness of 5 to 30 μm.
摘要翻译: 提供具有优异的高温腐蚀热疲劳抗开裂性的奥氏体不锈钢。 一种奥氏体不锈钢,以质量%计含有Cr:15.0〜23.0%,Ni:6.0〜20.0%,其中表面部分被平均厚度为5〜30μm的能量密度高的加工层覆盖 。
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公开(公告)号:US20110223055A1
公开(公告)日:2011-09-15
申请号:US13070689
申请日:2011-03-24
申请人: Hiroyuki SEMBA , Atsuro ISEDA , Hiroyuki HIRATA , Kaori KAWANO , Masaaki IGARASHI , Osamu MIYAHARA
发明人: Hiroyuki SEMBA , Atsuro ISEDA , Hiroyuki HIRATA , Kaori KAWANO , Masaaki IGARASHI , Osamu MIYAHARA
IPC分类号: C22C19/05
CPC分类号: C22C19/055 , C22C19/056
摘要: A Ni-base heat resistant alloy, which comprises by mass percent, C: 0.1% or less, Si: 1% or less, Mn: 1% or less, Cr: not less than 15% to less than 28%, Fe: 15% or less, W: more than 5% to not more than 20%, Al: more than 0.5% to not more than 2%, Ti: more than 0.5% to not more than 2%, Nd: 0.001 to 0.1% and B: 0.0005 to 0.01%, with the balance being Ni and impurities, in which the contents of P, S, Sn, Pb, Sb, Zn and As among the impurities are P: 0.03% or less, S: 0.01% or less, Sn: 0.020% or less, Pb: 0.010% or less, Sb: 0.005% or less, Zn: 0.005% or less and As: 0.005% or less, and further satisfies the formulas of [0.015≦Nd+13.4×B≦0.13], [Sn+Pb≦0.025] and [Sb+Zn+As≦0.010] is an alloy in which much higher strength than the conventional Ni-base heat resistant alloy can be achieved, the ductility and toughness after a long period of use at a high temperature are remarkably improved, and moreover the zero ductility temperature and the hot workability are also further improved. This alloy can be suitably used as a pipe material, a thick plate material for a heat resistant pressure member, a bar material, a forging, and the like for a boiler for power generation, a plant for chemical industry, and the like. This alloy may contain a specific amount of one or more elements selected from Mo, Co, Nb, V, Zr, Hf, Mg, Ca, La, Ce, Ta and Re.
摘要翻译: Ni基耐热合金,以质量%计含有C:0.1%以下,Si:1%以下,Mn:1%以下,Cr:15%以上且小于28%,Fe: 15%以下,W:5%以上20%以下,Al:0.5%以上2%以下,Ti:超过0.5%以上2%以下,Nd:0.001〜0.1% B:0.0005〜0.01%,余量为杂质,其中P,S,Sn,Pb,Sb,Zn和As的含量为P:0.03%以下,S:0.01%以下 较少,Sn:0.020%以下,Pb:0.010%以下,Sb:0.005%以下,Zn:0.005%以下,As:0.005%以下,进一步满足[0.015≦̸ Nd + 13.4 ×B≦̸ 0.13],[Sn + Pb≦̸ 0.025]和[Sb + Zn + As≦̸ 0.010]是一种合金,其中可以获得比常规的Ni基耐热合金高得多的强度, 在高温下长时间使用显着提高,而且零延展性温度和热加工性也进一步提高 改进。 该合金可以适合用作管材,用于发电锅炉的耐热压力构件的厚板材料,棒材,锻造等,用于化学工业的植物等。 该合金可以含有一定量的选自Mo,Co,Nb,V,Zr,Hf,Mg,Ca,La,Ce,Ta和Re中的一种或多种元素。
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公开(公告)号:US20120168038A1
公开(公告)日:2012-07-05
申请号:US13420918
申请日:2012-03-15
申请人: Atsuro ISEDA , Hiroyuki HIRATA , Hirokazu OKADA , Hiroyuki SEMBA
发明人: Atsuro ISEDA , Hiroyuki HIRATA , Hirokazu OKADA , Hiroyuki SEMBA
摘要: [Problem to be Solved]A Ni-based alloy product consisting of, by mass percent, C: 0.03 to 0.10%, Si: 0.05 to 1.0%, Mn: 0.1 to 1.5%, Sol.Al: 0.0005 to 0.04%, Fe: 20 to 30%, Cr: not less than 21.0% and less than 25.0%, W: exceeding 6.0% and not more than 9.0%, Ti: 0.05 to 0.2%, Nb: 0.05 to 0.35%, and B: 0.0005 to 0.006%, the balance being Ni and impurities, the impurities being P: 0.03% or less, S: 0.01% or less, N: less than 0.010%, Mo: less than 0.5%, and Co: 0.8% or less, wherein a value of effective B (Beff) defined by the formula, Beff (%)=B−(11/14)×N+(11/48)×Ti, is 0.0050 to 0.0300%, and the rupture elongation in a tensile test at 700° C. and at a strain rate of 10−6/sec is 20% or more. This alloy may contain one or more kinds of Cu, Ta, Zr, Mg, Ca, REM, and Pd.
摘要翻译: [待解决的问题]以质量%计,C:0.03〜0.10%,Si:0.05〜1.0%,Mn:0.1〜1.5%,Sol.Al:0.0005〜0.04%,Fe :20〜30%,Cr:21.0%以上25.0%以下,W:6.0以上9.0%以下,Ti:0.05〜0.2%,Nb:0.05〜0.35%,B:0.0005〜 0.006%,余量为Ni和杂质,杂质为P:0.03%以下,S:0.01%以下,N:小于0.010%,Mo:小于0.5%,Co:0.8%以下,其中, 由公式Beff(%)= B-(11/14)×N +(11/48)×Ti定义的有效B(Beff)的值为0.0050〜0.0300%,拉伸试验中的断裂伸长率为 700℃,应变速率为10-6 /秒为20%以上。 该合金可以含有Cu,Ta,Zr,Mg,Ca,REM和Pd中的一种或多种。
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