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1. 发明授权

US09217187B2 Magnetic field annealing for improved creep resistance 有权
标题翻译：磁场退火提高抗蠕变性能
公开(公告)号：US09217187B2
公开(公告)日：2015-12-22
申请号：US13553940
申请日：2012-07-20
申请人： Michael P. Brady , Gail M. Ludtka , Gerard M. Ludtka , Govindarajan Muralidharan , Don M. Nicholson , Orlando Rios , Yukinori Yamamoto
发明人： Michael P. Brady , Gail M. Ludtka , Gerard M. Ludtka , Govindarajan Muralidharan , Don M. Nicholson , Orlando Rios , Yukinori Yamamoto
IPC分类号： C21D1/18 , C22C38/00 , C22C19/03 , C22F1/10 , C21D6/02 , C21D1/26 , C22C30/00 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C1/02
CPC分类号： C21D6/02 , C21D1/18 , C21D1/26 , C21D2201/03 , C21D2211/004 , C21D2281/00 , C22C1/02 , C22C19/03 , C22C30/00 , C22C38/00 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22F1/10
摘要： The method provides heat-resistant chromia- or alumina-forming Fe-, Fe(Ni), Ni(Fe), or Ni-based alloys having improved creep resistance. A precursor is provided containing preselected constituents of a chromia- or alumina-forming Fe-, Fe(Ni), Ni(Fe), or Ni-based alloy, at least one of the constituents for forming a nanoscale precipitate MaXb where M is Cr, Nb, Ti, V, Zr, or Hf, individually and in combination, and X is C, N, O, B, individually and in combination, a=1 to 23 and b=1 to 6. The precursor is annealed at a temperature of 1000-1500° C. for 1-48 h in the presence of a magnetic field of at least 5 Tesla to enhance supersaturation of the MaXb constituents in the annealed precursor. This forms nanoscale MaXb precipitates for improved creep resistance when the alloy is used at service temperatures of 500-1000° C. Alloys having improved creep resistance are also disclosed.
摘要翻译：该方法提供具有改善的抗蠕变性的耐热氧化铬或氧化铝形成的Fe-，Fe（Ni），Ni（Fe）或Ni基合金。提供了一种前体，其含有氧化铬或氧化铝形成的Fe-，Fe（Ni），Ni（Fe）或Ni基合金的预选成分，至少一种用于形成纳米尺度沉淀物MaXb的组分，其中M为Cr ，Nb，Ti，V，Zr或Hf组合，X为C，N，O，B，单独且组合为a = 1〜23，b = 1〜6。温度为1000-1500℃，在至少5特斯拉的磁场存在下1-48小时，以增强退火前体中MaXb组分的过饱和。当在500-1000℃的使用温度下使用合金时，这形成了纳米尺度的MaXb沉淀物，以提高耐蠕变性。还公开了具有改善的抗蠕变性的合金。

2. 发明授权

US08431072B2 Cast alumina forming austenitic stainless steels 有权
标题翻译：铸造氧化铝成型奥氏体不锈钢
公开(公告)号：US08431072B2
公开(公告)日：2013-04-30
申请号：US13114745
申请日：2011-05-24
申请人： Govindarajan Muralidharan , Yukinori Yamamoto , Michael P. Brady
发明人： Govindarajan Muralidharan , Yukinori Yamamoto , Michael P. Brady
IPC分类号： C22C38/54 , C22C38/58 , C22C38/06
CPC分类号： B22D25/06 , C22C33/04 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/44 , C22C38/48 , C22C38/54 , C22C38/58
摘要： An austenitic stainless steel alloy consisting essentially of, in terms of weight percent ranges 0.15-0.5C; 8-37Ni; 10-25Cr; 2.5-5Al; greater than 0.6, up to 2.5 total of at least one element selected from the group consisting of Nb and Ta; up to 3Mo; up to 3Co; up to 1W; up to 3Cu; up to 15Mn; up to 2Si; up to 0.15B; up to 0.05P; up to 1 total of at least one element selected from the group consisting of Y, La, Ce, Hf, and Zr;
摘要翻译：奥氏体不锈钢合金，其重量百分比基本上在0.15-0.5℃范围内; 8-37Ni; 10-25Cr; 2.5-5Al; 大于0.6，最多2.5个选自Nb和Ta中的至少一种元素; 高达3Mo; 高达3Co 高达1W; 达3Cu; 高达15Mn; 高达2Si; 最高0.15B; 高达0.05P; 最多1个选自Y，La，Ce，Hf和Zr中的至少一种元素; <0.3Ti + V; <0.03N; 并且平衡Fe，其中Fe的重量百分比大于Ni的重量百分比，并且其中所述合金形成包含氧化铝的外部连续刻度，以及稳定的基本上单相的FCC奥氏体基体微观结构，所述奥氏体基体基本上不含铁素体的铁素体并且基本上不含BCC相。还公开了制造奥氏体不锈钢合金的方法。

3. 发明授权

US08815146B2 Alumina forming iron base superalloy 有权
标题翻译：氧化铝成型铁基超合金
公开(公告)号：US08815146B2
公开(公告)日：2014-08-26
申请号：US13440639
申请日：2012-04-05
申请人： Yukinori Yamamoto , Govindarajan Muralidharan , Michael P. Brady
发明人： Yukinori Yamamoto , Govindarajan Muralidharan , Michael P. Brady
IPC分类号： C22C38/50 , C22C30/00
CPC分类号： C22C30/00 , C21D6/004 , C21D2211/001 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54
摘要： An austenitic stainless steel alloy, consists essentially of, in weight percent 2.5 to 4 Al; 25 to 35 Ni; 12 to 19 Cr; at least 1, up to 4 total of at least one element selected from the group consisting of Nb and Ta; 0.5 to 3 Ti; less than 0.5 V; 0.1 to 1 of at least on element selected from the group consisting of Zr and Hf; 0.03 to 0.2 C; 0.005 to 0.1 B; and base Fe. The weight percent Fe is greater than the weight percent Ni. The alloy forms an external continuous scale including alumina, and contains coherent precipitates of γ′-Ni3Al, and a stable essentially single phase FCC austenitic matrix microstructure. The austenitic matrix is essentially delta-ferrite-free and essentially BCC-phase-free.
摘要翻译：奥氏体不锈钢合金基本上由2.5至4重量百分比的Al组成; 25至35镍; 12至19 Cr; 至少1个，至多4个总计选自Nb和Ta的至少一种元素; 0.5〜3 Ti; 小于0.5V; 0.1至1个选自Zr和Hf的至少一种元素; 0.03〜0.2℃; 0.005〜0.1B; 和碱Fe。 Fe的重量百分比大于Ni的重量百分比。该合金形成包括氧化铝在内的外部连续尺度，并且包含γ'-Ni3Al的相干沉淀物，以及基本稳定的单相FCC奥氏体基体微观结构。奥氏体基体基本上是不含铁素体的，并且基本上不含BCC相。

4. 发明申请

US20120301347A1 CAST ALUMINA FORMING AUSTENITIC STAINLESS STEELS 有权
标题翻译： CAST铝成型奥氏体不锈钢
公开(公告)号：US20120301347A1
公开(公告)日：2012-11-29
申请号：US13114745
申请日：2011-05-24
申请人： Govindarajan MURALIDHARAN , Yukinori Yamamoto , Michael P. Brady
发明人： Govindarajan MURALIDHARAN , Yukinori Yamamoto , Michael P. Brady
IPC分类号： C22C38/40 , C22C38/58 , C22C38/42 , C22C38/44 , C22C38/56 , C22C38/50 , C22C38/46 , B22D25/06 , C22C38/54 , C22C38/52 , C22C38/48
CPC分类号： B22D25/06 , C22C33/04 , C22C38/002 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/44 , C22C38/48 , C22C38/54 , C22C38/58
摘要： An austenitic stainless steel alloy consisting essentially of, in terms of weight percent ranges 0.15-0.5C; 8-37Ni; 10-25Cr; 2.5-5Al; greater than 0.6, up to 2.5 total of at least one element selected from the group consisting of Nb and Ta; up to 3Mo; up to 3Co; up to 1W; up to 3Cu; up to 15Mn; up to 2Si; up to 0.15B; up to 0.05P; up to 1 total of at least one element selected from the group consisting of Y, La, Ce, Hf, and Zr;
摘要翻译：奥氏体不锈钢合金，其重量百分比基本上在0.15-0.5℃范围内; 8-37Ni; 10-25Cr; 2.5-5Al; 大于0.6，最多2.5个选自Nb和Ta中的至少一种元素; 高达3Mo; 高达3Co 高达1W; 达3Cu; 高达15Mn; 高达2Si; 最高0.15B; 高达0.05P; 最多1个选自Y，La，Ce，Hf和Zr中的至少一种元素; <0.3Ti + V; <0.03N; 并且平衡Fe，其中Fe的重量百分比大于Ni的重量百分比，并且其中所述合金形成包含氧化铝的外部连续刻度，以及稳定的基本上单相的FCC奥氏体基体微观结构，所述奥氏体基体基本上不含铁素体的铁素体并且基本上不含BCC相。还公开了制造奥氏体不锈钢合金的方法。

5. 发明授权

US07754305B2 High Mn austenitic stainless steel 有权
标题翻译：高Mn奥氏体不锈钢
公开(公告)号：US07754305B2
公开(公告)日：2010-07-13
申请号：US12181718
申请日：2008-07-29
申请人： Yukinori Yamamoto , Michael L Santella , Michael P Brady , Philip J Maziasz , Chain-tsuan Liu
发明人： Yukinori Yamamoto , Michael L Santella , Michael P Brady , Philip J Maziasz , Chain-tsuan Liu
IPC分类号： C22C38/42 , C22C38/30 , C22C38/60 , C22C38/58 , C22C38/00
CPC分类号： C22C38/58 , C22C38/06 , C22C38/54 , Y10T428/166
摘要： An austenitic stainless steel alloy includes, in weight percent: >4 to 15 Mn; 8 to 15 Ni; 14 to 16 Cr; 2.4 to 3 Al; 0.4 to 1 total of at least one of Nb and Ta; 0.05 to 0.2 C; 0.01 to 0.02 B; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1W; up to 3 Cu; up to 1 Si; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni, and wherein the alloy forms an external continuous scale including alumina, nanometer scale sized particles distributed throughout the microstructure, the particles including at least one of NbC and TaC, and a stable essentially single phase FCC austenitic matrix microstructure that is essentially delta-ferrite-free and essentially BCC-phase-free.
摘要翻译：奥氏体不锈钢合金包括：重量百分比：> 4至15Mn; 8〜15 Ni; 14至16 Cr; 2.4至3 Al; Nb和Ta中的至少一种为0.4〜1; 0.05〜0.2℃; 0.01〜0.02 B; 不超过0.3的Ti + V组合; 最多3 Mo; 最多3公司; 高达1W; 最多3 Cu; 高达1 Si; 高达0.05 P; 最多1个Y，La，Ce，Hf和Zr中的至少一个; 小于0.05 N; 和Fe基，其中Fe的重量百分比大于Ni的重量百分比，并且其中所述合金形成包括氧化铝的外部连续尺度，分布在整个微结构中的纳米尺度的颗粒，所述颗粒包括NbC和TaC中的至少一种，以及基本上稳定的单相FCC奥氏体基体微观结构，其基本上不含铁素体，并且基本上不含BCC相。

6. 发明申请

US20080292489A1 High Mn Austenitic Stainless Steel 有权
标题翻译：高锰奥氏体不锈钢
公开(公告)号：US20080292489A1
公开(公告)日：2008-11-27
申请号：US12181718
申请日：2008-07-29
申请人： Yukinori Yamamoto , Michael L. Santella , Michael P. Brady , Philip J. Maziasz , Chain-Tsuan Liu
发明人： Yukinori Yamamoto , Michael L. Santella , Michael P. Brady , Philip J. Maziasz , Chain-Tsuan Liu
IPC分类号： C22C38/44 , C22C38/52 , C22C38/18 , C22C38/58 , C22C38/42 , C22C38/22 , C22C38/26 , C22C38/28
CPC分类号： C22C38/58 , C22C38/06 , C22C38/54 , Y10T428/166
摘要： An austenitic stainless steel alloy includes, in weight percent: >4 to 15 Mn; 8 to 15 Ni; 14 to 16 Cr; 2.4 to 3 Al; 0.4 to 1 total of at least one of Nb and Ta; 0.05 to 0.2 C; 0.01 to 0.02 B; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1W; up to 3 Cu; up to 1 Si; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni, and wherein the alloy forms an external continuous scale including alumina, nanometer scale sized particles distributed throughout the microstructure, the particles including at least one of NbC and TaC, and a stable essentially single phase FCC austenitic matrix microstructure that is essentially delta-ferrite-free and essentially BCC-phase-free.
摘要翻译：奥氏体不锈钢合金包括：重量百分比：> 4至15Mn; 8〜15 Ni; 14至16 Cr; 2.4至3 Al; Nb和Ta中的至少一种为0.4〜1; 0.05〜0.2℃; 0.01〜0.02 B; 不超过0.3的Ti + V组合; 最多3 Mo; 最多3公司; 高达1W; 最多3 Cu; 高达1 Si; 高达0.05 P; 最多1个Y，La，Ce，Hf和Zr中的至少一个; 小于0.05 N; 和Fe基，其中Fe的重量百分比大于Ni的重量百分比，并且其中所述合金形成包括氧化铝的外部连续尺度，分布在整个微结构中的纳米尺度的颗粒，所述颗粒包括NbC和TaC中的至少一种，以及基本上稳定的单相FCC奥氏体基体微观结构，其基本上是不含铁素体的，并且基本上不含BCC相。

7. 发明申请

US20080163957A1 OXIDATION RESISTANT HIGH CREEP STRENGTH AUSTENTIC STAINLESS STEEL 有权
标题翻译：耐氧化高强度强韧奥氏体不锈钢
公开(公告)号：US20080163957A1
公开(公告)日：2008-07-10
申请号：US11619944
申请日：2007-01-04
申请人： Michael P. Brady , Bruce A. Pint , Chain-Tsuan Liu , Philip J. Maziasz , Yukinori Yamamoto , Zhao P. Lu
发明人： Michael P. Brady , Bruce A. Pint , Chain-Tsuan Liu , Philip J. Maziasz , Yukinori Yamamoto , Zhao P. Lu
IPC分类号： C22C38/48 , C22C38/40
CPC分类号： C22C38/44 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/48
摘要： An austenitic stainless steel displaying high temperature oxidation and creep resistance has a composition that includes in weight percent 15 to 21 Ni, 10 to 15 Cr, 2 to 3.5 Al, 0.1 to 1 Nb, and 0.05 to 0.15 C, and that is free of or has very low levels of N, Ti and V. The alloy forms an external continuous alumina protective scale to provide a high oxidation resistance at temperatures of 700 to 800° C. and forms NbC nanocarbides and a stable essentially single phase fcc austenitic matrix microstructure to give high strength and high creep resistance at these temperatures.
摘要翻译：显示高温氧化和抗蠕变性的奥氏体不锈钢具有15〜21重量％，10〜15重量％，2〜3.5重量％，0.1〜1重量％，0.05〜0.15重量％的组成，不含或具有非常低的N，Ti和V含量。该合金形成外部连续氧化铝保护垢，以在700至800℃的温度下提供高抗氧化性，并形成NbC纳米碳化物和稳定的基本单相fcc奥氏体基体显微组织在这些温度下赋予高强度和高抗蠕变性。

8. 发明授权

US07754144B2 High Nb, Ta, and Al creep- and oxidation-resistant austenitic stainless steel 有权
标题翻译：高Nb，Ta和Al蠕变和抗氧化奥氏体不锈钢
公开(公告)号：US07754144B2
公开(公告)日：2010-07-13
申请号：US12103837
申请日：2008-04-16
申请人： Michael P Brady , Michael L Santella , Yukinori Yamamoto , Chain-tsuan Liu
发明人： Michael P Brady , Michael L Santella , Yukinori Yamamoto , Chain-tsuan Liu
IPC分类号： C22C38/42 , C22C38/30 , C22C38/60 , C22C38/58 , C22C38/00
CPC分类号： C22C38/48 , C22C38/06
摘要： An austenitic stainless steel HTUPS alloy includes, in weight percent: 15 to 30 Ni; 10 to 15 Cr; 2 to 5 Al; 0.6 to 5 total of at least one of Nb and Ta; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1 W; up to 0.5 Cu; up to 4 Mn; up to 1 Si; 0.05 to 0.15 C; up to 0.15 B; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni wherein said alloy forms an external continuous scale comprising alumina, nanometer scale sized particles distributed throughout the microstructure, said particles comprising at least one composition selected from the group consisting of NbC and TaC, and a stable essentially single phase fcc austenitic matrix microstructure, said austenitic matrix being essentially delta-ferrite-free and essentially BCC-phase-free.
摘要翻译：奥氏体不锈钢HTUPS合金包括：重量百分比：15至30Ni; 10〜15 Cr; 2至5铝; 0.6〜5％的Nb和Ta中的至少一种; 不超过0.3的Ti + V组合; 最多3 Mo; 最多3公司; 高达1W; 高达0.5 Cu; 高达4 Mn; 高达1 Si; 0.05〜0.15℃ 高达0.15B; 高达0.05 P; 最多1个Y，La，Ce，Hf和Zr中的至少一个; 小于0.05 N; 和Fe基，其中Fe的重量百分比大于Ni的重量百分比，其中所述合金形成包含分布在整个微结构中的纳米尺度尺寸的氧化铝的外部连续刻度，所述颗粒包含至少一种选自NbC 和TaC，以及基本稳定的单相fcc奥氏体基体显微组织，所述奥氏体基体基本上不含铁素体，并且基本上不含BCC相。

9. 发明授权

US07744813B2 Oxidation resistant high creep strength austenitic stainless steel 有权
标题翻译：耐氧化高蠕变强度奥氏体不锈钢
公开(公告)号：US07744813B2
公开(公告)日：2010-06-29
申请号：US11619944
申请日：2007-01-04
申请人： Michael P. Brady , Bruce A. Pint , Chain-Tsuan Liu , Philip J. Maziasz , Yukinori Yamamoto , Zhao P. Lu
发明人： Michael P. Brady , Bruce A. Pint , Chain-Tsuan Liu , Philip J. Maziasz , Yukinori Yamamoto , Zhao P. Lu
IPC分类号： C22C38/42 , C22C38/30 , C22C38/60 , C22C38/58 , C22C38/00
CPC分类号： C22C38/44 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/48
摘要： An austenitic stainless steel displaying high temperature oxidation and creep resistance has a composition that includes in weight percent 15 to 21 Ni, 10 to 15 Cr, 2 to 3.5 Al, 0.1 to 1 Nb, and 0.05 to 0.15 C, and that is free of or has very low levels of N, Ti and V. The alloy forms an external continuous alumina protective scale to provide a high oxidation resistance at temperatures of 700 to 800° C. and forms NbC nanocarbides and a stable essentially single phase fcc austenitic matrix microstructure to give high strength and high creep resistance at these temperatures.
摘要翻译：显示高温氧化和抗蠕变性的奥氏体不锈钢具有15〜21重量％，10〜15重量％，2〜3.5重量％，0.1〜1重量％，0.05〜0.15重量％的组成，不含或具有非常低的N，Ti和V含量。该合金形成外部连续氧化铝保护垢，以在700至800℃的温度下提供高抗氧化性，并形成NbC纳米碳化物和稳定的基本单相fcc奥氏体基体显微组织在这些温度下赋予高强度和高抗蠕变性。

10. 发明申请

US20080304996A1 High Nb, Ta, and Al Creep- and Oxidation-Resistant Austenitic Stainless Steels 有权
标题翻译：高Nb，Ta和Al蠕变和抗氧化奥氏体不锈钢
公开(公告)号：US20080304996A1
公开(公告)日：2008-12-11
申请号：US12103837
申请日：2008-04-16
申请人： Michael P. Brady , Michael L. Santella , Yukinori Yamamoto , Chain-tsuan Liu
发明人： Michael P. Brady , Michael L. Santella , Yukinori Yamamoto , Chain-tsuan Liu
IPC分类号： C22C38/42 , C22C38/44 , C22C38/58
CPC分类号： C22C38/48 , C22C38/06
摘要： An austenitic stainless steel HTUPS alloy includes, in weight percent: 15 to 30 Ni; 10 to 15 Cr; 2 to 5 Al; 0.6 to 5 total of at least one of Nb and Ta; no more than 0.3 of combined Ti+V; up to 3 Mo; up to 3 Co; up to 1 W; up to 0.5 Cu; up to 4 Mn; up to 1 Si; 0.05 to 0.15 C; up to 0.15 B; up to 0.05 P; up to 1 total of at least one of Y, La, Ce, Hf, and Zr; less than 0.05 N; and base Fe, wherein the weight percent Fe is greater than the weight percent Ni wherein said alloy forms an external continuous scale comprising alumina, nanometer scale sized particles distributed throughout the microstructure, said particles comprising at least one composition selected from the group consisting of NbC and TaC, and a stable essentially single phase fcc austenitic matrix microstructure, said austenitic matrix being essentially delta-ferrite-free and essentially BCC-phase-free.
摘要翻译：奥氏体不锈钢HTUPS合金包括：重量百分比：15至30Ni; 10〜15 Cr; 2至5铝; 0.6〜5％的Nb和Ta中的至少一种; 不超过0.3的Ti + V组合; 最多3 Mo; 最多3公司; 高达1W; 高达0.5 Cu; 高达4 Mn; 高达1 Si; 0.05〜0.15℃ 高达0.15B; 高达0.05 P; 最多1个Y，La，Ce，Hf和Zr中的至少一个; 小于0.05 N; 和Fe基，其中Fe的重量百分比大于Ni的重量百分比，其中所述合金形成包含分布在整个微结构中的纳米尺度尺寸的氧化铝的外部连续刻度，所述颗粒包含至少一种选自NbC 和TaC，以及基本稳定的单相fcc奥氏体基体显微组织，所述奥氏体基体基本上不含铁素体，并且基本上不含BCC相。

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