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    • 3. 发明公开
    • 고온 강도 및 크리프 특성이 향상된 마르텐사이트계 산화물분산강화 합금 및 이의 제조 방법
    • 具有增强的高温强度和韧性的马氏体氧化物分散强化合金及其制造方法
    • KR1020140118689A
    • 2014-10-08
    • KR1020130164341
    • 2013-12-26
    • 한국원자력연구원한국수력원자력 주식회사
    • 김태규노상훈최병권한창희김기백강석훈천영범장진성정용환
    • C22C38/18C22C33/02
    • C22C38/18C22C33/02
    • The present invention relates to a martensitic oxide dispersion strengthened alloy having enhanced high temperature strength and an enhanced creep property, which includes 8-12wt% of Cr, 0.1-0.5wt% of Y_2O_3, 0.1-0.5wt% of C, 0.2-2 wt% of Mo, 0.01-0.3 wt% of Ti, 0.1-0.3 wt% of Zr, 05-0.2wt% of Ni, and a remainder consisting of Fe, and a method of preparing the same. The martensitic oxide dispersion strengthened alloy according to the present invention includes 8-12wt% of Cr, 0.1-0.5wt% of Y_2O_3, 0.1-0.5wt% of C, 0.2-2 wt% of Mo, 0.01-0.3 wt% of Ti, 0.1-0.3 wt% of Zr, 05-0.2wt% of Ni, and a remainder consisting of Fe. The total contents of Ti Zr, and Ni is 0.5wt% or less. The martensitic oxide dispersion strengthened alloy has excellent strength and an excellent creep property at a high temperature, especially at 700°C, so that the martensitic oxide dispersion strengthened alloy is available to reactor core structural components including nuclear fuel cladding tubes, wires, end caps, and ducts of nuclear power systems, such as sodium-cooling fast reactors.
    • 本发明涉及具有增强的高温强度和增强的蠕变性能的马氏体氧化物分散强化合金,其包括8-12wt%的Cr,0.1-0.5wt%的Y_2O_3,0.1-0.5wt%的C,0.2-2 的Mo,0.01-0.3重量%的Ti,0.1-0.3重量%的Zr,0.05-0.2重量%的Ni,余量由Fe组成的方法及其制备方法。 根据本发明的马氏体分散强化合金包含8-12重量%的Cr,0.1-0.5重量%的Y_2O_3,0.1-0.5重量%的C,0.2-2重量%的Mo,0.01-0.3重量%的Ti ,0.1-0.3重量%的Zr,0.05-0.2重量%的Ni,余量由Fe组成。 Ti Zr和Ni的总含量为0.5重量%以下。 马氏体氧化物分散强化合金在高温下,特别是在700℃下具有优异的强度和优异的蠕变性能,使得马氏体分散强化合金可用于反应堆核心结构部件,包括核燃料包覆管,电线,端盖 ,以及核电系统管道,如钠冷快堆。
    • 4. 发明公开
    • 산화물 분산강화 합금 접합방법 및 그 접합방법을 이용한 산화물 분산강화 합금 접합 구조물
    • 氧化物分散强化合金和结构结构的结合方法
    • KR1020140111535A
    • 2014-09-19
    • KR1020130025812
    • 2013-03-11
    • 한국원자력연구원한국수력원자력 주식회사
    • 노상훈김태규최병권강석훈장진성정용환
    • B23K20/00B21B1/28
    • The present invention relates to a method of joining an oxide dispersion-strengthened alloy, including the following steps: (a) preparing an oxide dispersion-strengthened alloy hardened by cold working; (b) performing a diffused junction process by compressing the oxide dispersion-strengthened alloy; and (c) performing a recrystallizing heat treatment. According to the present invention, the method of joining an oxide dispersion-strengthened alloy prepares an oxide dispersion-strengthened alloy hardened by cold working and compresses the oxide dispersion-strengthened alloy to simultaneously perform a diffused junction process and a recrystallizing heat treatment, so that crystal grain movement is generated to cause no junction interface, thereby having an equal strength to a base metal and improving soundness of a juncture. As a result, because the oxide dispersion-strengthened alloy can be joined to be perfectly integrated in terms of crystallography, the method of joining an oxide dispersion-strengthened alloy is expected to be useful in manufacture of parts to which an oxide dispersion-strengthened alloy is applied.
    • 本发明涉及一种接合氧化物分散强化合金的方法,包括以下步骤:(a)制备通过冷加工硬化的氧化物分散强化合金; (b)通过压缩氧化物分散强化合金进行扩散接合处理; 和(c)进行再结晶热处理。 根据本发明,接合氧化物分散强化合金的方法制备通过冷加工硬化的氧化物分散强化合金,并压缩氧化物分散强化合金,同时进行扩散连接处理和再结晶热处理,使得 产生晶粒运动而不产生接合界面,从而具有与贱金属相等的强度并提高接合点的良好性。 结果,由于可以结合使氧化物分散强化合金结合成一体化,所以预期接合氧化物分散强化合金的方法可用于制造氧化物分散强化合金 被申请;被应用。
    • 5. 发明授权
    • β-니오븀 석출물의 분포 제어를 통한 내식성이 우수한지르코늄 합금 핵연료피복관의 제조방법
    • 通过控制BETA而制造具有优异耐腐蚀性的核燃料封闭管的锆合金的制备方法; -NB分布
    • KR100835830B1
    • 2008-06-05
    • KR1020070003261
    • 2007-01-11
    • 한국원자력연구원한국수력원자력 주식회사
    • 정용환박정용박상윤이명호최병권백종혁김준환김현길
    • G21C21/02G21C3/07G21C3/06B21C37/00
    • Y02E30/40
    • A method for preparing zirconium alloys for nuclear cladding tubes having high corrosion resistance by control of beta-Nb distribution is provided to obtain the high corrosion resistance by forming distributed precipitates minutely and uniformly. A method for preparing zirconium alloys for nuclear cladding tubes having high corrosion resistance by control of beta-Nb includes the steps of: preparing an ingot by solving a mixture of zirconium alloy elements(S1); forging the ingot prepared in the step S1 in a beta-phase region(S2); performing homogenization-heat processing for the ingot forged in the step S2 and rapidly cooling the ingot(S3); extruding the ingot cooled in the step S3(S4); performing first heat processing for an extrusion extruded in the step S4(S5); preparing a nuclear cladding tube of zirconium alloys by cold-working and medium-heat-processing the extrusion heat-processed in the step S5(S6); rapidly cooling the nuclear cladding tubes of the zirconium alloys prepared in the step S6(S7); and performing final heat processing for the nuclear cladding tubes of the zirconium alloys in the step S7(S8).
    • 提供了通过控制β-Nb分布来制备具有高耐蚀性的核包层管的锆合金的方法,以通过均匀地形成分布的沉淀物来获得高耐腐蚀性。 通过控制β-Nb制备具有高耐腐蚀性的核包层管的锆合金的方法包括以下步骤:通过解决锆合金元素(S1)的混合物来制备锭; 将步骤S1中制备的锭锻造成β相区域(S2); 对步骤S2中锻造的锭进行均质化 - 热处理,并快速冷却锭(S3); 挤压步骤S3(S4)中冷却的锭料; 对步骤S4(S5)中挤出的挤出进行第一热处理; 在步骤S5(S6)中通过冷加工和中加热处理挤出热处理制备锆合金的核包层管; 快速冷却步骤S6中制备的锆合金的核包层管(S7); 并在步骤S7中对锆合金的核包层管执行最终的热处理(S8)。
    • 7. 发明公开
    • 가혹한 원자로 가동조건에서 내산화성이 우수한 핵연료피복관용 지르코늄 합금 조성물 및 이를 이용한 지르코늄 합금 핵연료 피복관의 제조방법
    • 用于核燃料层压的ZIRCONIUM合金,在严重的反应器操作条件下具有超级氧化电阻,以及使用其的ZIRCONIUM合金核燃料层的制备方法
    • KR1020140118949A
    • 2014-10-08
    • KR1020140110797
    • 2014-08-25
    • 한국원자력연구원한국수력원자력 주식회사
    • 박정용정양일김현길최병권박상윤박동준구양현
    • C22C16/00G21C3/06
    • Y02E30/40C22C16/00C22F1/002C22F1/186G21C3/07
    • Disclosed are a zirconium alloy composition for a nuclear fuel cladding having a superior oxidation resistance under a severe reactor operation condition and a method of preparing zirconium alloy nuclear fuel claddings by using the same. The zirconium alloy composition includes 1.8 to 2.0 % by weight of niobium (Nb), at least one element selected from iron (Fe), chromium (Cr) and copper (Cu), 0.12 % by weight of oxygen (O), 0.01 % by weight of silicon (Si) and a remaining amount of zirconium (Zr). The zirconium alloy composition for the nuclear fuel cladding includes 0.1 to 0.2 % by weight of Fe, 0.1 % by weight of Cr, and 0.03 to 0.2 % by weight of Cu. According to the present invention, the nuclear fuel cladding is manufactured using the zirconium alloy composition for the nuclear fuel cladding, which represents superior oxidation resistance under a severe reactor operation condition, so that the superior oxidation resistance of the nuclear fuel cladding can be ensured under an accident condition as well as under a normal operation condition of a reactor. In addition, the nuclear fuel cladding satisfying power increase, load following operation, and the long cycle operation conditions can be manufactured so that the economical efficiency and stability of the nuclear fuel can be simultaneously improved.
    • 公开了一种在严格的反应器操作条件下具有优异的抗氧化性的核燃料包层的锆合金组合物,以及使用该锆合金核燃料包层的方法。 锆合金组合物包含1.8-2.0重量%的铌(Nb),至少一种选自铁(Fe),铬(Cr)和铜(Cu)的元素,0.12重量%的氧(O),0.01重量% 的硅(Si)和剩余量的锆(Zr)。 用于核燃料包层的锆合金组合物包含0.1至0.2重量%的Fe,0.1重量%的Cr和0.03至0.2重量%的Cu。 根据本发明,使用核燃料包层用锆合金组合物制造核燃料包层,在严格的电抗器运行状态下,表现出优异的抗氧化性,能够确保核燃料包层的优异的抗氧化性能 事故状况以及反应堆的正常运行状态。 此外,可以制造满足功率增加,负载追随运转和长周期运行条件的核燃料包覆,从而可以同时提高核燃料的经济性和稳定性。