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。

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。