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1. 发明授权

US09328403B2 Ni-based heat resistant alloy 有权
标题翻译：镍基耐热合金
公开(公告)号：US09328403B2
公开(公告)日：2016-05-03
申请号：US14237586
申请日：2012-07-31
申请人： Hiroyuki Semba , Hirokazu Okada , Hiroyuki Hirata , Mitsuru Yoshizawa , Atsuro Iseda
发明人： Hiroyuki Semba , Hirokazu Okada , Hiroyuki Hirata , Mitsuru Yoshizawa , Atsuro Iseda
IPC分类号： C22C19/05 , C22F1/10
CPC分类号： C22C19/056 , C22C19/05 , C22C19/051 , C22C19/055 , C22F1/10
摘要： A Ni-based heat resistant alloy as pipe, plate, rod, forgings and the like consists of C≦0.15%, Si≦2%, Mn≦3%, P≦0.03%, S≦0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≦0.4Nd, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn=1.7×10−5d+0.05{(Al/26.98)+(Ti/47.88)+(Nb/92.91)}. In the formula, d denotes an average grain size (μm), and each element symbol denotes the content (mass %) of that element. If the alloy contains W, Mo+(W/2)≦15% holds. The alloy has improved ductility after long-term use at high temperatures, and cracking due to welding can be avoided.
摘要翻译：作为管，板，棒，锻件等的Ni基耐热合金由C＆lt; Ll; 0.15％，Si＆NlE; 2％，Mn＆NlE; 3％，P＆NlE; 0.03％，S＆lt; 0.01％，Cr：15％多于28％，Mo：3〜15％，Co：5％以上25％以下，Al：0.2〜2％，Ti：0.2％〜3％，Nd：fn〜0.08％ O，nNE，0.4Nd，根据需要还含有特定量的Nb，W，B，Zr，Hf，Mg，Ca，Y，La，Ce，Ta，Re和Fe中的至少一种，其余为Ni和杂质，其中，fn = 1.7×10-5d + 0.05 {（Al / 26.98）+（Ti / 47.88）+（Nb / 92.91）}。式中，d表示平均粒径（μm），各元素符号表示该元素的含量（质量％）。如果合金含有W，则Mo +（W / 2）＆nlE; 15％成立。该合金在长期使用高温下具有改善的延展性，并且可以避免由于焊接引起的开裂。

2. 发明授权

US08808473B2 Austenitic heat resistant alloy 有权
标题翻译：奥氏体耐热合金
公开(公告)号：US08808473B2
公开(公告)日：2014-08-19
申请号：US13472640
申请日：2012-05-16
申请人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
发明人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
IPC分类号： C22C19/05
CPC分类号： C22C19/055
摘要： An austenitic heat resistant alloy includes, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 10.14 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 0.05%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 1.36% or less, Ti: 3% or less, and Nb: 3% or less, and the balance being Fe and impurities. The contents of P and S in the impurities are P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1≦4×Al+2×Ti+Nb≦12 and P+0.2×Cr×B≦0.035, where an element in the Formulas represents the content by mass percent.
摘要翻译：奥氏体系耐热合金的质量百分比含有：C：0.15％以下，Si：2％以下，Mn：3％以下，Ni：40〜60％，Co：10.14〜25％，Cr：15％以上且小于28％，Mo：12％以下，W：小于0.05％，其总含量为0.1〜12％，Nd：0.001〜0.1％，B：0.0005〜0.006％，N：0.03％以下，O：0.03％以下，Al：1.36％以下，Ti：3％以下，Nb：3％以下中的至少一种，余量为Fe和杂质。杂质中P和S的含量为P：0.03％以下，S：0.01％以下。合金满足1＆nlE; 4×Al + 2×Ti + Nb＆nlE; 12和P + 0.2×Cr×B＆nlE; 0.035，式中的元素表示质量百分含量。

3. 发明申请

US20120288400A1 AUSTENITIC HEAT RESISTANT ALLOY 有权
标题翻译：奥氏体耐热合金
公开(公告)号：US20120288400A1
公开(公告)日：2012-11-15
申请号：US13472640
申请日：2012-05-16
申请人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
发明人： Hiroyuki Hirata , Hirokazu Okada , Hiroyuki Semba , Kazuhiro Ogawa , Atsuro Iseda , Mitsuru Yoshizawa
IPC分类号： C22C19/05
CPC分类号： C22C19/055
摘要： An austenitic heat resistant alloy consisting of, by mass percent, C: 0.15% or less, Si: 2% or less, Mn: 3% or less, Ni: 40 to 60%, Co: 0.03 to 25%, Cr: 15% or more and less than 28%, either one or both of Mo: 12% or less and W: less than 4%, the total content thereof being 0.1 to 12%, Nd: 0.001 to 0.1%, B: 0.0005 to 0.006%, N: 0.03% or less, O: 0.03% or less, at least one selected from Al: 3% or less, Ti: 3% or less, and Nb: 3% or less, the balance being Fe and impurities. The contents of P and S in the impurities being P: 0.03% or less and S: 0.01% or less. The alloy satisfies 1≦4×Al+2×Ti+Nb≦12 and P+0.2×Cr×B≦0.035, is excellent in weld crack resistance and toughness of HAZ, and is further excellent in creep strength at high temperatures.
摘要翻译：一种奥氏体系耐热合金，以质量％计含有C：0.15％以下，Si：2％以下，Mn：3％以下，Ni：40〜60％，Co：0.03〜25％，Cr：15 ％以上且小于28％，Mo：12％以下，W：小于4％，其总含量为0.1〜12％，Nd：0.001〜0.1％，B：0.0005〜0.006 ％，N：0.03％以下，O：0.03％以下，选自Al：3％以下，Ti：3％以下，Nb：3％以下，余量为Fe和杂质中的至少一种。杂质中P和S的含量为：0.03％以下，S：0.01％以下。合金满足1＆nlE; 4×Al + 2×Ti + Nb＆nlE; 12和P + 0.2×Cr×B＆nlE; 0.035，HAZ的耐熔融裂纹性和韧性优异，并且在高温下的蠕变强度更优异。

4. 发明申请

US20140234155A1 Ni-BASED HEAT RESISTANT ALLOY 有权
标题翻译：镍基耐热合金
公开(公告)号：US20140234155A1
公开(公告)日：2014-08-21
申请号：US14237586
申请日：2012-07-31
申请人： Hiroyuki Semba , Hirokazu Okada , Hiroyuki Hirata , Mitsuru Yoshizawa , Atsuro Iseda
发明人： Hiroyuki Semba , Hirokazu Okada , Hiroyuki Hirata , Mitsuru Yoshizawa , Atsuro Iseda
IPC分类号： C22C19/05
CPC分类号： C22C19/056 , C22C19/05 , C22C19/051 , C22C19/055 , C22F1/10
摘要： A Ni-based heat resistant alloy as pipe, plate, rod, forgings and the like consists of C≦0.15%, Si≦2%, Mn≦3%, P≦0.03%, S≦0.01%, Cr: 15% or more and less than 28%, Mo: 3 to 15%, Co: more than 5% and not more than 25%, Al: 0.2 to 2%, Ti: 0.2% to 3%, Nd: fn to 0.08%, and O≦0.4Nd, further containing, as necessary, at least one kind of Nb, W, B, Zr, Hf, Mg, Ca, Y, La, Ce, Ta, Re and Fe of specific amounts, the balance being Ni and impurities, wherein, fn=1.7×10−5d+0.05{(Al/26.98)+(Ti/47.88)+(Nb/92.91)}. In the formula, d denotes an average grain size (μm), and each element symbol denotes the content (mass %) of that element. If the alloy contains W, Mo+(W/2)≦15% holds. The alloy has improved ductility after long-term use at high temperatures, and cracking due to welding can be avoided.
摘要翻译：作为管，板，棒，锻件等的Ni基耐热合金由C＆lt; Ll; 0.15％，Si＆NlE; 2％，Mn＆NlE; 3％，P＆NlE; 0.03％，S＆lt; 0.01％，Cr：15％多于28％，Mo：3〜15％，Co：5％以上25％以下，Al：0.2〜2％，Ti：0.2％〜3％，Nd：fn〜0.08％ O，nNE，0.4Nd，根据需要还含有特定量的Nb，W，B，Zr，Hf，Mg，Ca，Y，La，Ce，Ta，Re和Fe中的至少一种，其余为Ni和杂质，其中，fn = 1.7×10-5d + 0.05 {（Al / 26.98）+（Ti / 47.88）+（Nb / 92.91）}。式中，d表示平均粒径（μm），各元素符号表示该元素的含量（质量％）。如果合金含有W，则Mo +（W / 2）＆nlE; 15％成立。该合金在长期使用高温下具有改善的延展性，并且可以避免由于焊接引起的开裂。

5. 发明授权

US08801876B2 Ni-based alloy product and producing method thereof 有权
标题翻译：镍基合金产品及其制备方法
公开(公告)号：US08801876B2
公开(公告)日：2014-08-12
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
IPC分类号： C21D11/00 , C22C19/05 , C22C30/00
CPC分类号： C22F1/10 , C22C19/05 , C22F1/00
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。

6. 发明授权

US08313591B2 Austenitic heat resistant alloy 有权
标题翻译：奥氏体耐热合金
公开(公告)号：US08313591B2
公开(公告)日：2012-11-20
申请号：US12647028
申请日：2009-12-24
申请人： Hiroyuki Hirata , Atsuro Iseda , Hirokazu Okada , Hiroyuki Semba , Kaori Kawano , Osamu Miyahara
发明人： Hiroyuki Hirata , Atsuro Iseda , Hirokazu Okada , Hiroyuki Semba , Kaori Kawano , Osamu Miyahara
IPC分类号： C22C30/00 , C22C19/05
CPC分类号： C22C38/44 , C21D6/001 , C21D6/002 , C21D6/004 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/50 , C22C38/52 , C22C38/54 , F22B37/04
摘要： An austenitic heat resistant alloy, which contains, by mass percent, C≦0.15%, Si≦2%, Mn≦3%, Ni: 40 to 80%, Cr: 15 to 40%, W and Mo: 1 to 15% in total content, Ti≦3%, Al≦3%, N≦0.03%, O≦0.03%, with the balance being Fe and impurities, and among the impurities P≦0.04%, S≦0.03%, Sn≦0.1%, As≦0.01%, Zn≦0.01%, Pb≦0.01% and Sb≦0.01%, and satisfies the conditions [P1=S+{(P+Sn)/2}+{(As+Zn+Pb+Sb)/5}≦0.050], [0.2≦P2=Ti+2Al≦7.5−10×P1], [P2≦9.0−100×O] and [N≦0.002×P2+0.019] can prevent both the liquation crack in the HAZ and the brittle crack in the HAZ and also can prevent defects due to welding fabricability, which occur during welding fabrication, and moreover has excellent creep strength at high temperatures. Therefore, the alloy can be used suitably as a material for constructing high temperature machines and equipment, such as power generating boilers, plants for the chemical industry and so on. The ally may contain a specific amount or amounts of one or more elements selected from Co, B, Ta, Hf, Nb, Zr, Ca, Mg, Y, La, Ce and Nd.
摘要翻译：一种奥氏体耐热合金，以质量％计含有0.15％，Si＆NlE; 2％，Mn＆NlE; 3％，Ni：40〜80％，Cr：15〜40％，W和Mo：1〜15％在总含量中，Ti＆NlE; 3％，Al＆NlE; 3％，N＆amp; NlE; 0.03％，O＆NlE; 0.03％，余量为Fe和杂质，杂质P＆lt; L; 0.04％，S＆NlE; 0.03％，Sn＆，As / nlE; 0.01％，Zn和nlE; 0.01％，Pb和nlE; 0.01％和Sb＆nlE; 0.01％，满足条件[P1 = S + {（P + Sn）/ 2} + {（As + Zn + Pb + Sb）/ 5}＆nlE; 0.050]，[0.2＆nlE; P2 = Ti + 2Al＆nlE; 7.5-10×P1]，[P2＆nlE; 9.0-100×O]和[N＆lt; lE; 0.002×P2 + 0.019]可以防止液化裂纹 HAZ和HAZ中的脆性裂纹，并且还可以防止在焊接制造期间发生的焊接可制造性的缺陷，并且还在高温下具有优异的蠕变强度。因此，该合金可以适当地用作构成发电锅炉，化工工业用等的高温机器和设备的材料。盟友可以含有一定量或数量的选自Co，B，Ta，Hf，Nb，Zr，Ca，Mg，Y，La，Ce和Nd中的一种或多种元素。

7. 发明申请

US20100166594A1 AUSTENITIC HEAT RESISTANT ALLOY 有权
标题翻译：奥氏体耐热合金
公开(公告)号：US20100166594A1
公开(公告)日：2010-07-01
申请号：US12647028
申请日：2009-12-24
申请人： Hiroyuki Hirata , Atsuro Iseda , Hirokazu Okada , Hiroyuki Semba , Kaori Kawano , Osamu Miyahara
发明人： Hiroyuki Hirata , Atsuro Iseda , Hirokazu Okada , Hiroyuki Semba , Kaori Kawano , Osamu Miyahara
IPC分类号： C22C19/05 , C22C30/04 , C22C30/00 , C22C30/06
CPC分类号： C22C38/44 , C21D6/001 , C21D6/002 , C21D6/004 , C22C38/001 , C22C38/002 , C22C38/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/50 , C22C38/52 , C22C38/54 , F22B37/04
摘要： An austenitic heat resistant alloy, which comprises, by mass percent, C≦0.15%, Si≦2%, Mn≦3%, Ni: 40 to 80%, Cr: 15 to 40%, W and Mo: 1 to 15% in total content, Ti≦3%, Al≦3%, N≦0.03%, O≦0.03%, with the balance being Fe and impurities, and among the impurities P≦0.04%, S≦0.03%, Sn≦0.1%, As≦0.01%, Zn≦0.01%, Pb≦0.01% and Sb≦0.01%, and satisfies the conditions [P1=S+{(P+Sn)/2}+{(As+Zn+Pb+Sb)/5}≦0.050], [0.2≦P2=Ti+2Al≦7.5−10×P1], [P2≦9.0−100×O] and [N≦0.002×P2+0.019] can prevent both the liquation crack in the HAZ and the brittle crack in the HAZ and also can prevent defects due to welding fabricability, which occur during welding fabrication, and moreover has excellent creep strength at high temperatures. Therefore, the alloy can be used suitably as a material for constructing high temperature machines and equipment, such as power generating boilers, plants for the chemical industry and so on. The ally may contain a specific amount or amounts of one or more elements selected from Co, B, Ta, Hf, Nb, Zr, Ca, Mg, Y, La, Ce and Nd.
摘要翻译：一种奥氏体系耐热合金，以质量％计含有0.15％，Si＆NlE; 2％，Mn＆NlE; 3％，Ni：40〜80％，Cr：15〜40％，W：1〜15％在总含量中，Ti＆NlE; 3％，Al＆NlE; 3％，N＆amp; NlE; 0.03％，O＆NlE; 0.03％，余量为Fe和杂质，杂质P＆lt; L; 0.04％，S＆NlE; 0.03％，Sn＆，As / nlE; 0.01％，Zn和nlE; 0.01％，Pb和nlE; 0.01％和Sb＆nlE; 0.01％，满足条件[P1 = S + {（P + Sn）/ 2} + {（As + Zn + Pb + Sb）/ 5}＆nlE; 0.050]，[0.2＆nlE; P2 = Ti + 2Al＆nlE; 7.5-10×P1]，[P2＆nlE; 9.0-100×O]和[N＆lt; lE; 0.002×P2 + 0.019]可以防止液化裂纹 HAZ和HAZ中的脆性裂纹，并且还可以防止在焊接制造期间发生的焊接可制造性的缺陷，并且还在高温下具有优异的蠕变强度。因此，该合金可以适当地用作构成发电锅炉，化工工业用等的高温机器和设备的材料。盟友可以含有一定量或数量的选自Co，B，Ta，Hf，Nb，Zr，Ca，Mg，Y，La，Ce和Nd中的一种或多种元素。

8. 发明授权

US08293169B2 Ni-base heat resistant alloy 有权
标题翻译：镍基耐热合金
公开(公告)号：US08293169B2
公开(公告)日：2012-10-23
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 high strength, ductile, and tough Ni-base heat resistant alloy 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. Impurity contents of P, S, Sn, Pb, Sb, Zn and As 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 formulas of [0.015≦Nd+13.4×B≦0.13], [Sn+Pb≦0.025] and [Sb+Zn +As≦0.010] are met.
摘要翻译：高强度，延性和韧性的Ni基耐热合金，以质量％计，C：0.1％以下，Si：1％以下，Mn：1％以下，Cr：15％以上，小于 28％，Fe：15％以下，W：5％以上20％以下，Al：0.5％以上2％以下，Ti：0.5％以上且2％以下，Nd ：0.001〜0.1％，B：0.0005〜0.01％，余量为Ni和杂质。 P，S，Sn，Pb，Sb，Zn和As的杂质含量P：0.03％以下，S：0.01％以下，Sn：0.020％以下，Pb：0.010％以下，Sb：0.005％较少，Zn：0.005％以下，As：0.005％以下，[0.015＆nlE; Nd + 13.4×B＆nlE; 0.13]，[Sn + Pb＆nlE; 0.025]和[Sb + Zn + As＆nlE; 0.025] 见面

9. 发明授权

US06939415B2 Austenitic stainless steel and manufacturing method thereof 有权
标题翻译：奥氏体不锈钢及其制造方法
公开(公告)号：US06939415B2
公开(公告)日：2005-09-06
申请号：US10760401
申请日：2004-01-21
申请人： Atsuro Iseda , Hiroyuki Semba
发明人： Atsuro Iseda , Hiroyuki Semba
IPC分类号： C22C38/40 , C21D8/00 , C22C38/00 , C22C38/04 , C22C38/46 , C22C38/48 , C22C38/52 , C22C38/58 , C22C38/18
CPC分类号： C22C38/04 , C21D6/004 , C21D8/005 , C21D9/08 , C21D2211/001 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/46 , C22C38/48 , C22C38/52 , C22C38/58 , F22B37/04
摘要： An austenitic stainless steel excellect in high temperature strength and creep rupture ducitility which comprises, on the percent by mass basis, C: 0.03-0.12%, Si: 0.2-2%, Mn: 0.1-3%, P: 0.03% or less, S: 0.01% or less, Ni: more than 18% and less than 25%, Cr: more than 22% and less than 30%, Co: 0.04-0.8%, Ti: 0.002% or more and less than 0.01%, Nb: 0.1-1%, V: 0.01-1%, B: more than 0.0005% and 0.2% or less, sol. Al: 0.0005% or more and less than 0.03%, N: 0.1-0.35% and O (Oxygen): 0.001-0.008%, with the balance being Fe and impurities. The austenitic stainless steel may contain a specified amount of one or more element(s) of Mo and W, and/or a specified amount of one or more element(s) of Mg, Zr, Ca, REM, Pd and Hf.
摘要翻译：奥氏体系不锈钢具有高温强度和蠕变断裂率，优选以C：0.03〜0.12％，Si：0.2〜2％，Mn：0.1〜3％，P：0.03％以下，S：0.01％以下，Ni：18％以上且25％以下，Cr：22％以上且30％以下，Co：0.04〜0.8％，Ti：0.002％以上0.01％，Nb：0.1〜1％，V：0.01〜1％，B：0.0005％以上且0.2％以下。 Al：0.0005％以上且小于0.03％，N：0.1-0.35％，O（氧）：0.001-0.008％，余量为Fe和杂质。奥氏体不锈钢可以含有规定量的一种或多种Mo和W的元素，和/或规定量的一种或多种Mg，Zr，Ca，REM，Pd和Hf的元素。

10. 发明授权

US06926778B2 Austenitic stainless steel excellent in high temperature strength and corrosion resistance, heat resistant pressurized parts, and the manufacturing method thereof 有权
标题翻译：耐高温，耐腐蚀性优异的奥氏体不锈钢，耐热加压部件及其制造方法
公开(公告)号：US06926778B2
公开(公告)日：2005-08-09
申请号：US10414306
申请日：2003-04-16
申请人： Atsuro Iseda , Hiroyuki Semba
发明人： Atsuro Iseda , Hiroyuki Semba
IPC分类号： C21D8/02 , C21D8/10 , C22C19/05 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/58 , C22C38/24
CPC分类号： C22C38/58 , C21D8/0205 , C21D8/105 , C22C19/055 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/54
摘要： An austenitic stainless steel suited for ultra supercritical boilers, which consists of C: 0.03-0.12%, Si: 0.1-1%, Mn: 0.1-2%, Cr: not less than 20% but less than 28%, Ni: more than 35% but not more than 50%, W: 4-10%, Ti: 0.01-0.3%, Nb: 0.01-1%, sol. Al: 0.0005-0.04%, B: 0.0005-0.01%, and the balance Fe and impurities; and also characterized by the impurities whose contents are restricted to P: not more than 0.04%, S: not more than 0.010%, Mo: less than 0.5%, N: less than 0.02%, and O (oxygen): not more than 0.005%. Heat resistant pressurized parts excellent in thermal fatigue properties and structural stability at high temperatures, which have a coarse grain whose grain size number is 6 or less, and whose mixed grain ratio is 10% or less.
摘要翻译：一种适用于超超临界锅炉的奥氏体不锈钢，由C：0.03-0.12％，Si：0.1-1％，Mn：0.1-2％，Cr：不小于20％但小于28％，Ni：更多 W：4-10％，Ti：0.01-0.3％，Nb：0.01-1％，溶胶，35％以上50％以下。 Al：0.0005-0.04％，B：0.0005-0.01％，余量为Fe和杂质; 并且其特征在于含量限制在P：不大于0.04％，S：不大于0.010％，Mo：小于0.5％，N：小于0.02％，O（氧）：不大于 0.005％。具有优异的热疲劳特性和高温下的结构稳定性的耐热加压部件，其具有粒径为6以下的粗粒，混合粒径比为10％以下。

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