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1. 发明专利

JP2009079240A Austenitic stainless steel and producing method therefor, and structural material and piping in nuclear reactor 审中-公开
标题翻译：奥氏体不锈钢及其制造方法，以及核反应堆中的结构材料和管道
公开(公告)号：JP2009079240A
公开(公告)日：2009-04-16
申请号：JP2007247747
申请日：2007-09-25
申请人： Tohoku Univ , Tokyo Electric Power Co Inc:The , 国立大学法人東北大学 , 東京電力株式会社
发明人： YONEZAWA TOSHIO , SUZUKI SHUNICHI , TEZUKA HIDESHI , TAKAMORI KENRO , OKI TAKASHI
IPC分类号： C22C38/00 , C21D8/00 , C22C38/44 , C22C38/50 , G21C5/00 , G21D1/00
CPC分类号： Y02E30/40
摘要： PROBLEM TO BE SOLVED: To provide an austenitic stainless steel which is made hardly sensible and has excellent stress-corrosion cracking resistance, and even when the stress-corrosion crack is caused, hardly causes propagation of the stress-corrosion crack, since it has high stacking-fault energy value, and a producing method therefor, and the structural material thereof.
SOLUTION: The austenitic stainless steel is composed of, by wt.%, ≤0.030% C, ≤0.030% N, ≤0.1% Si, ≤1.0% Mn, 10-26% Ni, 15-30% Cr, ≤3.0% Mo and the balance substantially Fe with inevitable impurities, wherein solid-solution content of C is ≤0.010% and solid-solution content of N is ≤0.010%. Further, the constitution containing 0.01-2.0% Al and the constitution containing ≤1.0% one or more kinds selected from V, Ti and Nb can be adopted.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供几乎不敏感并且具有优异的耐应力腐蚀开裂性的奥氏体不锈钢，并且即使当引起应力腐蚀裂纹时，也几乎不会引起应力腐蚀裂纹的扩展，因为它具有高堆垛层错能量值及其制造方法及其结构材料。
解决方案：奥氏体不锈钢以重量％，≤0.030％C，≤0.030％N，≤0.1％Si，≤1.0％Mn，10-26％Ni，15-30％Cr， ≤3.0％Mo，余量基本为Fe，不可避免的杂质，其中C的固溶含量≤0.010％，N的固溶含量≤0.010％。此外，可以采用包含0.01-2.0％的Al和包含≤1.0％的选自V，Ti和Nb中的一种或多种的构成。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2006159262A Welded joint and welding material 审中-公开
标题翻译：焊接接头和焊接材料
公开(公告)号：JP2006159262A
公开(公告)日：2006-06-22
申请号：JP2004355614
申请日：2004-12-08
申请人： Sumitomo Metal Ind Ltd , Tokyo Electric Power Co Inc:The , 住友金属工業株式会社 , 東京電力株式会社
发明人： OGAWA KAZUHIRO , TAKEDA KIYOKO , KOUSU TAKAHIRO , ANADA HIROYUKI , SUZUKI SHUNICHI , TAKAMORI KENRO , OKI TAKASHI
IPC分类号： B23K35/30 , B23K9/00 , B23K9/23 , B23K103/04 , C22C38/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a welded joint in which a weld metal has excellent stress corrosion cracking resistance, and to provide a welding material suitably used for producing the same.
SOLUTION: The austenitic weld metal has a composition comprising, by mass, ≤0.03% C, ≤1.0% Si, 0.1 to 2.0% Mn, 15 to 22% Cr, 8 to 12% Ni, 0 to 3% Mo and 0.001 to 0.15% N, and the balance Fe with impurities, and, in the impurities, the content of P is ≤0.04% and the content of S is 0.03%, and further, the value of FP expressed by following formula (1) lies in the range from -3 to 0: formula (1) is FP=Ni+30C+20N+0.5Mn-1.1Cr-1.32Mo-1.65Si+9 (1); wherein, the atomic symbols in formula denote the content (mass%) of each element. The welded joint is suitably used in a high temperature pure water environment of nuclear power generation equipment.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供焊接金属具有优异的抗应力腐蚀开裂性的焊接接头，并提供适合用于制造焊接材料的焊接材料。解决方案：奥氏体焊接金属具有以质量％计含有0.03％C，≤1.0％Si，0.1％至2.0％Mn，15％至22％Cr，8％至12％Ni，0％至3％Mo 和0.001〜0.15％的N，余量为Fe的杂质，杂质中的P含量为0.04％以下，S含量为0.03％，另外，由下式（1）表示的FP值）在-3至0的范围内：公式（1）为FP = Ni + 30C + 20N + 0.5Mn-1.1Cr-1.32Mo-1.65Si + 9（1）; 其中，式中的原子符号表示各元素的含量（质量％）。焊接接头适用于核能发电设备的高温纯水环境。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2006161114A Austenitic stainless steel material and weld joint thereof 审中-公开
标题翻译：奥氏体不锈钢材料及其焊接接头
公开(公告)号：JP2006161114A
公开(公告)日：2006-06-22
申请号：JP2004355615
申请日：2004-12-08
申请人： Sumitomo Metal Ind Ltd , Tokyo Electric Power Co Inc:The , 住友金属工業株式会社 , 東京電力株式会社
发明人： TAKEDA KIYOKO , OGAWA KAZUHIRO , ANADA HIROYUKI , KANZAKI MANABU , SUZUKI SHUNICHI , TAKAMORI KENRO , OKI TAKASHI
IPC分类号： C22C38/00 , B23K9/00 , B23K9/23 , B23K103/04 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide an austenitic stainless steel material which can prevent stress corrosion cracking that occurs in a work hardened layer or a HAZ at the surface of a steel material used for equipment, a pipeline and the like in a nuclear power plant or the like, and to provide a weld joint thereof.
SOLUTION: (1) The austenitic stainless steel material comprises 0.10% or less C, 1.5% or less Si, 0.1-2.0% Mn, 20-35% Cr, 18-65% Ni, 0-3% Mo, 0.001-0.15% N, and the balance Fe with impurities among which P is 0.05% or less and S is 0.05% or less; and has a work-hardened layer in the surface layer harder than that in a wall center part by 50 or higher by Vickers hardness. (2) The weld joint of the austenitic stainless steel includes the austenitic stainless steel material having the above composition as a base metal and the work hardened layer and has the hardened layer in a welded heat affected zone in the surface of the base metal, which is harder than that of a wall center part of the base metal by 50 or higher by Vickers hardness.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种奥氏体不锈钢材料，其可以防止在用于设备，管道等的钢材表面的工作硬化层或HAZ中发生的应力腐蚀开裂发电厂等，并提供其焊接接头。（1）奥氏体不锈钢材料含有0.10％以下的C，1.5％以下的Si，0.1〜2.0％的Mn，20-35％的Cr，18-65％的Ni，0-3％的Mo， 0.001-0.15％N，余量为Fe，杂质为P为0.05％以下，S为0.05％以下。并且通过维氏硬度将表面层中的硬化层比壁中心部分的硬化层硬化50以上。（2）奥氏体不锈钢的焊接接头包括具有上述组成的奥氏体不锈钢材料作为基底金属和加工硬化层，并且在贱金属的表面的焊接热影响区域中具有硬化层，比维氏硬度的基础金属的壁中心部分的硬度要高50或更高。版权所有（C）2006，JPO＆NCIPI

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