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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。
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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
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。
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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
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。
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